Carcinonemertes regicides Shields, Wickham & Kuris 1989

Frontal section of C. regicides showing cerebrum (C), foregut (F), and the absence of a distinct precerebral septum. Scale bar..Frontal section of C. regicides showing cerebrum (C), foregut (F), and the absence of a distinct precerebral septum. Scale bar = 50 μm.

Cross section of C. regicides showing lateral nerve (N), submuscular gland (arrow), and ventral blood vessel (star). Scale bar..Cross section of C. regicides showing lateral nerve (N), submuscular gland (arrow), and ventral blood vessel (star). Scale bar = 25 μm

Ovarian pore in cross section; star, pore; m, muscle layer; E, epithelium. Scale bar = 25 μm

Female C. regicides in cross section; arrow, ovarian pore; 0, ovary; I, intestine. Scale bar = 100 μm

Female C. regicides in cross section; arrow, ovarian pore; 0, ovary; I, intestine. Scale bar = 100 μm

Larva of C. regicides (Van Cleave's hematoxylin). Note the epithelial layer surrounding the inner mass (arrow). Scale bar = 50 u

Egg string of C. regicides in situ on the funiculus of an egg of Paralithodes camtschatica; E, nemertean embryo; F, funiculus...Egg string of C. regicides in situ on the funiculus of an egg of Paralithodes camtschatica; E, nemertean embryo; F, funiculus. Scale bar = 100 um.

Detail of the mucous sheath of C. regicides . Note the grainy appearance and lack of lapilli. Scale bar = 200 μm

Detail of posterior aspect of male C. regicides; S, seminal vesicle; arrows, male gonoduct. Scale bar = 25 μm .

Posterior aspect of male C . regicides; S, seminal vesicle; N, posterior nerve ganglia; C, cloaca . Note the blunt posterior...Posterior aspect of male C . regicides; S, seminal vesicle; N, posterior nerve ganglia; C, cloaca. Note the blunt posterior form. Scale bar = 100 μm.

Detail of ovarian pore of C. regicides. Scale bar = 25 um.

Lateral aspect of female C. regicides showing ovarian pore (P). Scale bar = 100 μm .

Lateral aspect of the stylet (stilleto-like) in the anterior proboscis chamber. Scale bar = 25 μm

Dorsoventral aspect of the stylet (dagger-like) in the anterior proboscis chamber of C. regicides. Scale bar = 25 μm.

Detail of the feeding armature of C. regicides; F, posterior of foregut-esophagus; A, anterior proboscis chamber; arrow...Detail of the feeding armature of C. regicides ; F, posterior of foregut-esophagus; A, anterior proboscis chamber; arrow, middle proboscis chamber; P, posterior proboscis chamber. Scale bar = 100 μm .

Anterior end of a female C. regicides with the foregut-esophagus retracted (F) . Note the prominent dorsal ganglia (G)...Anterior end of a female C. regicides with the foregut-esophagus retracted (F) . Note the prominent dorsal ganglia (G) . Scale bar = 100 μm.

Composite drawing of female (left) and male (right) Carcinonemerles regicides from Paralithodes camtschatica...Composite drawing of female (left) and male (right) Carcinonemerles regicides from Paralithodes camtschatica . The foregut of the male is everted for comparison . Note that the reproductive system of the male is represented on the right, while the digestive system is figured on the left . APC, anterior proboscis chamber; CE, cerebrum; CL, cloaca; FO, foregut-esophagus; INT, intestine; LN, lateral nerve cord; MPC, middle proboscis chamber; OC, ocelli; OP, ovarian pore; OV, ovary; PA, parenchyma; PPC, posterior proboscis chamber; PS, proboscis sheath; RE, rhynchodaeum; ST, stomach; SV, seminal vesicle; TE, testis; VD, vas deferens.