coe: nemerteans of west and northwest coasts. 231 



Cephalic glands massively developed ; a remarkable development 

 of snbmuscular glands extends throughout whole length of body, 

 usually forming a distinct layer internal to the muscular walls of 

 body, and often thicker than all other layers of body wall combined. 



Cerebral sense organs probably wanting. Ocelli two ; occasion- 

 ally fragmented into four. 



Usually oviparous, though fertilization often takes place internally, 

 and sometimes a ]Jortion of the ova of an individual may be retained 

 in the body until after the development of free-swimming embiyos. 

 Development without complicated metamorphosis. 



52. Carcinonemertes epialti Coe. 

 Amer. Nat., 36, p. 442, 1902. 



Harriman Alaska Expedition, 11, p. 151, PI. 9, figs. 1-9, 1904. 

 PL 2, fig. 20 ; Text-figs. 7-9, 16, 27, 28, 44, 45. 



Body small, rounded, slender ; sexually mature individuals about 

 4-6 mm. in length and less than 0.5 mm. in diameter; head not 

 demarcated from body ; lateral grooves and cerebral sense organs 

 wanting. 



Color. — Bright orange, sometimes inclining more to reddish and 

 sometimes to yellowish (PI. 2, fig. 20). Head a little paler, for the 

 color is largely due to the intestinal lobes which extend forward to 

 brain. 



Ocelli. — A pair of ocelli of irregular outline, but sometimes 

 crescent shaped, lie about midway between tip of snout and brain 

 (PI. 2, fig. 20; Text-fig. 44). 



Proboscis. — Proboscis sheath consists merely of few fibers of 

 connective tissue supporting a very thin, flattened epithelium, and 

 can be seen only ih favorable preparations. Proboscis very minute 

 and short, extending scarcely more than its own diameter posterior 

 to brain (Text fig. 9). Anterior chamber of proboscis very small, 

 not as long as diameter of a brain lobe, lined with thin, scarcely 

 glandular, epithelium (Text-fig. 7). Stylet region swollen with 

 large gland cells. Central stylet minute ; basis about four times as 

 long as broad, but very small, measuring only about .027-.033 mm. 



