coe: nemeeteans of west and northwest coasts. 221 



i 



There are two, and sometimes four, pouches of accessory stylets,-' 

 with six to ten stylets in each pouch 

 (Text-tig. 37). The proboscis has four- 

 teen nerves. 



In addition to the anatomical peculi- 

 arities described in the paper mentioned 

 above (Coe, :01, p. 33) the following 



data from a study of the species in \.,, -.v. ..,.j.v«.,^*: -* 



California may be noted : 



Color. — In California many individ- 

 uals have the ventral surface deep yel- 

 low anteriorly and olive in intestinal 

 region ; or the ventral surface may be 

 orange yellow anteriorly and grayish 

 posteriorly. 



Ocelli. — Two groups of ocelli are 

 situated on each side of head ; of these 

 the anterior, marginal group contains 

 from 5 to 12 rather large ocelli in a sin- 

 gle irregular row, while about the same 

 number of smaller ocelli are sitiiated 

 more posteriorly, near the l)rain lobes, 

 and are arranged in an irregular cluster 



(PI. 16, fig. 95; PL 17, fig. 103; PL 25, figs. 198, 199). A minute 

 and evidently very young specimen, but 10 mm. in length, had but 

 4 ocelli in each of the four groups. 



In all specimens collected in California the stylets of the proboscis 

 are very peculiar in that they exhibit an appearance as if braided or 

 woven together out of several parts. The optical effect produced 

 (PL 16, fig. 96 ; PL 24, fig. 192 ; Text-fig. 38) is probably the result 

 of llutings which ascend spirally toward the ti]) of stylet, the trans- 

 lucency of which allows the fiutings of both the lower and u])per 

 surface to appear to lie in the salne plane. The effect, however, is 

 exactly that of a In-aided structure ta]iering to a sharp point and 

 composed of at least four strands. It is also possible that the 

 braided appearance is produced by superficial markings. Both cen- 



FiG. 37. — Paranernertes pere- 

 grina. Outline of stylet appa- 

 ratus of proboscis. 



1 On the coast of California two ponches only seemed to be the almost con- 

 stant number, while there were commonly four in Alaska siaecimens. 



