I2O 



COE AND KUNKEL. 



FIG. i. Dorsal view of head, 

 showing position of ocelli and 

 cephalic furrows. 



The single preserved specimen measured about 25 cm. in 

 length and 4 to 5 mm. in width. 



There are several ocelli of moderate size situated in a single row 

 on each lateral margin of the snout. In the single specimen at 



hand there are three conspicuous ocelli 

 on each side near the tip of the snout 



(Fig. i). 



The color of the body is olive green 

 on the dorsal surface, with a darker 

 oval area situated on the dorsal side a 

 little behind the tip of the snout ; the 

 ventral surface and lateral margins of 

 the body are much paler or colorless. 

 In internal anatomy the following 

 peculiarities of structure may be noted : 

 The epithelium is composed of the 

 usual slender, ciliated columnar and 

 glandular cells --the latter containing 

 a secretion which stains deeply and is often found extruded in oval 

 masses among the cilia. The two delicate layers of integumental 

 muscles are arranged as in related species. The cephalic glands 

 are limited to the anterior portion of the snout. The cntis glands 

 form a compact but comparatively thin layer immediately beneath 

 the underlying fibrous layer, as in many related species, and are 

 therefore distinctly separated from the internal longitudinal mus- 

 cles by the fibrous layer of the cntis. The average thickness of 

 the layer of cutis glands is only about one third to one fifth as 

 great as that of the outer longitudinal muscular layer. As in 

 other species, some of the glands show a peculiar affinity for 

 nuclear stains while others take on the plasma stains only, as 

 has been described by Miss Thompson ' for Zygcupolia. 



The proboscis sJieatJi becomes very small towards the posterior 

 end of the body (Fig. 3) and terminates some little distance ante- 

 rior to the anus. The proboscis is attached anteriorly to the tissues 

 of the head immediately in front of the brain, but whether the 

 posterior end was attached to the wall of the sheath was not 

 determined. From the conditions found in Cerebratulus lactcns, 



1 Proc. Acad. Nat. Sci. Philadelphia, p. 664, 1901. 



