27 6 
PACIFIC SCIENCE, Vol. II, October, 1948 
Fig. 1. Anelassorhynchus porcellus: a, map of anatomy of anterior portion of body, X5, (mesenteries are 
•omitted, the foregut (P,0,C} is capable of being straightened parallel to nerve cord so that the neurointes- 
tinal vessel [B 3 ] is then greatly lengthened, the nephridia [n} are usually greatly swollen by contained eggs 
or sperm); b, diagram of ring vessel surrounding end of foregut to show connection with B 1 and B 3 ; c, 
cloaca with anal vesicles, X5, from a smaller specimen than a\ d, seta, X10, and its hook, enlarged; e, sketch 
of anterior two-thirds of a typical specimen with detached proboscis, XL 
AV, anal vesicles; B 1 —b\ dorsal, ring, neurointestinal, and ventral blood vessels, respectively; C, stomach; CF, 
ciliated funnel or nephrostome; C, cloaca; I, intestine; N, nephridium; NC, nerve cord; O, oesophagus; P, 
pharynx; S, seta. 
