“Bullowanthura pambula sp. nov.
Description: Head as wide as long, about 4 as long as pereonite 1; rostrum broadly triangular, 1 length of lateral lobes; eyes absent. Pereonite lengths as follows: 1 = 2 3 < 4 = 5 = 6 > 7. Pereon with obsolete dorsolateral grooves, obsolete dorsal pits on pereonites 4-6. Pleon little longer than pereonite 7, pleonites distinct.
Antenna 1 flagellum of 3-4 articles, first the longest, little longer than last article of peduncle. Antenna 2 flagellum rudimentary, of 4-5 short setose articles.
Mandible with an acute incisor, palp a single 1-1-7.-ow article with 1 terminal seta. Maxilla a slender, serrated spine bearing a minutely hooked keel on its distal inner margin. Maxilliped basis not distinct from head, bearing 2-3 ventral setae distally; maxillipedal palp of 2 articles, first about 1/3 length of basis and bearing 1 dorsal seta and 4 ventral setae, second minute and with 3 terminal setae.
Pereopod 1 stout; palm oblique and with a strong proximal thumb. Article 5 of pereopod1 with 2-4 spines; palm of article 6 with 7-13 spines laterally and in the same row a long simple seta near the base of the thumb and another after the last spine; palm with 8-12 simple setae mesially. Pereopods 2, 3 unlike the first, article 6 barely thickened, palms lacking a thumb and bearing 6 spines. Pereopods 4-7 subequal; article 5 small and triangular, bearing 2 spines; article 6 with 2-4 posterior spines; dactyl about as long as article 6.
Uropodal endopod elongate-triangular, setose, little shorter than peduncle; exopod divided into two parts by a very shallow terminal notch, a smaller ventral lobe with a rounded apex and a larger semicircular dorsal lobe. Telson reaching more than halfway along endopod, dorsally concave, lateral margins curved to a broadly rounded apex; statocyst opening to a proximal dorsal pore; 2 pairs of setae terminally and a few dorsally.
Male: Differs from the above description in multi-articulate, setose flagellum of antenna 1 with about 10-12 articles reaching back to end of head; more elongate pereopods; palm of pereopod 1 with a longer and narrower thumb, bearing 11-14 spines laterally and many setae mesially; appendix masculinis a simple rod extending beyond the outer ramus of pleopod 2.
Material examined: 6 males, 3 females, 17 juveniles; 3-11 mm.
Holotype: AM P25378, juvenile, 10.3 mm.
Type Locality: N.S.W., 1.6 km E. of Malabar, Sydney, AMSBS stn III, 33° 58'S., 151° 17'E., dredged from 66 m, 31 July 1973.
Paratypes:
N.S.W. E of Malabar, Sydney, 66-69 m, AMSBS stations: stn III, AM P25379 (6 specimens), AM P22814 (2), AM P25380 (3); stn V, AM P25382 (2); stn 4C, AM P22790 (1).
E. of Long Bay, Sydney, 66 m, AMSBS station. IV, AM P25381 (3).
VICTORIA. Port Phillip Bay, 8-25 m, PPBES stations: stn 901, NMV J486-J488 (3); stn 906, NMV J489 (1); stn 969, NMV J554 (1); stn 982, NMV J555-J557 (3).
Distribution: New South Wales and Victoria, 8-69 m, on sandy sediments.
Remarks: The species has been previously confused with Leptanthura diemenensis with which it co-occurs. Bullowanthura pambula may be separated on its smaller size and more pronounced thumb on pereopod 1 and, more definitely, on the uni-articulate mandibular palp.
The series from Port Phillip Bay differed slightly from those off Sydney in features which could only be attributed to their slightly smaller size. In general, smaller specimens have fewer spines on the cutting edges of articles 6 of the pereopods, the number on pereopod 1, for example, showing quite a wide range.
The Australian aboriginal word `pambula' means 'two waters' and indicates the distribution of the species.”
(Poore, 1978: 146-147)
