32 COE 



of 9 to 1 3 eyes near each lateral border of the snout, and another row 

 inside and somewhat posterior to the latter, containing about 6 small 

 ocelli on each side, and of these 3 commonly lie nearly above the 

 brain. Back of the brain 7 to 10 ocelli occur at widely separated 

 intervals above the lateral nerve on each side. 



Proboscis. — Proboscis comparatively large ; central stylet moderately 

 slender ; basis dark, moderately elongated, of nearly uniform diameter 

 throughout, and sharply truncated posteriorly (p1. viii, fig. 5). Ac- 

 cessory stylet pouches two in number, each commonly containing two 

 or three moderately slender stylets. 



Cerebral sense organs. — Large, and situated immediately in front 

 of brain. 



The eggs of these worms are few in number, but are fully Yi the 

 diameter of the body in size ; consequently there can be but a single 

 row on each side. The sexual products are mature m June. 



PARANEMERTES gen. nov. 



Body of large size, rather stout, usually much rounded in the eso- 

 phagal region but flattened posteriorly. Head not marked off from 

 body, of variable form, in some states of contraction often emarginate 

 in front. There is commonly a pair of inconspicuous oblique furrows 

 back of head. The nerve cords and blood vessels join on the dorsal 

 side of the posterior end of the intestine. 



The mouth opens into the rhynchodaeum. The proboscis sheath 

 commonly reaches but little beyond the middle of the body — in P. 

 peregrina to ^ the distance towards the posterior extremity. The 

 proboscis is small (^P. pallida)., of medium size {P. peregrina)., or 

 large (/'. carnea). There is a single central stylet in the proboscis, 

 and usually four or more pouches of accessory stylets. Some indi- 

 viduals of P. peregrina., however, have but two. Ocelli are numer- 

 ous and minute. The cerebral sense organs are rather small and lie in 

 front of the brain. Sub-muscular glands are usually well developed. 



The species of this new genus show considerable resemblance to 

 those of Emplectonema Stimpson. They differ, however, in general 

 shape and appearance of body, never being very long or slender, and 

 individuals do not coil their bodies into a mass as those of Emplecto- 

 nema are so prone to do. The proboscis is much larger and the 

 central stylet is always well developed. The proboscis sheath is also 

 much longer. In many respects the genus resembles Amphiporus. 

 The body is much longer, however, and not nearly so contractile, the 

 proboscis is not nearly so large, and the proboscis sheath is not so long. 



