Otomorpha

Razor-back Sucker, Zyrauchen cypho (Lockington). Green River, Utah.

Chanos salmoneus.

Fall Fish (Semotilus bullaris).

Head of Chondrostoma knerii (Heckel), seen from Below.

Probolodus and Psalidodon.

laboratory colony, Vanderbilt University, Nashville, Davidson County, Tennessee, US

Figure 7.Telestes miloradi, Croatia: Ljuta River at Gruda, Konavosko Polje a Holotype, male, 66.7 mm SL, NMW 95296 b paratype, female, 119.3 mm SL, NMW 51173.

Figure 4.Additional coloration pattern of coloration of Pareiorhina hyptiorhachis, sp. n., LBP 12257, female, 27.2 mm SL.

Figure 4.Last unbranched dorsal-fin ray length / head length; TES = Tigris-Euphrates system.

Figure 4.Ventral view of abdominal region of three species of Hisonotus, arrows indicate anal membrane in Hisonotus oliveirai (A, D) and Hisonotus paresi (B, E) contrasting with the lack of the anal membrane in Hisonotus chromodontus (C, F). A Hisonotus oliveirai, MZUSP 115061, holotype, female, 26.4 mm SL B Hisonotus paresi, MZUSP 115062, holotype, female, 26.2 mm SL C Hisonotus chromodontus, LBP 7964, female, 28.1 mm SL D Hisonotus oliveirai, NUP 3578, male, 27.1 mm SL E Hisonotus paresi, NUP 10928, male, 24.2 mm SL F Hisonotus chromodontus, LBP 12278, male, 26.7 mm SL.

Figure 5.a Habitat at type locality of Pseudancistrus zawadzkii: rio Tapajós, municipality of Itaituba, Pará State, Brazil b habitat at paratype locality: rio Tracuá, Tapajós river basin, municipality of Itaituba, Pará State, Brazil.

SEM of the distal portion of the mandibular barbel of Tetranematichthys wallacei showing the fleshy digitiform processes

Common Fine-Scaled Sucker (Catostomus commersonii (Lacepede)).

Carpiodes carpio (Rafinesque). Carp Sucker.

Rooseveltiella altus (Gill). No. 21432 U. S. N. M., presumably the type. 155 mm. long. Napo, on Marathon River. Collected by Orton.

Squalius muticellus -- Vairone.

Noturus nocturnus Jordan & Gilbert. Type. Sabine River, Belton, Arkansas.

Stolephorus garmani.

Male horned dace picking up a stone. His lips are grasping it.

Notropis lermae, new species.

laboratory colony, Vanderbilt University, Nashville, Davidson County, Tennessee, US

Figure 5.The Rio Paraíba do Sul basin indicating the type locality of Pareiorhina hyptiorhachis in Ribeirão Fernandes, a tributary of Rio Pomba, Rio Paraíba do Sul basin, 21°14'47"S, 43°34'07"W.

Figure 5.Striation pattern of scales taken from anteriour part of the boby above lateral line. A Carasobarbus apoensis B Carasobarbus canis C Carasobarbus chantrei D Carasobarbus exulatus E Carasobarbus fritschii F Carasobarbus harterti G Carasobarbus kosswigi H Carasobarbus luteus I Carasobarbus sublimus.

Figure 5.Map of the distribution of A Hisonotus oliveirai. Star = holotype locality, ribeirão Cambira. Diamonds = paratype localities B Hisonotus paresi. Star = holotype locality, riacho Águas Claras. Diamonds = paratype localities.