1912.] 



NATURAL SCIENCES OF PHILADELPHIA. 



483 



branches. Male sex pore at base of penis. Vas deferens simple or 

 anastomosed; uterus anastomosing; no uterus glands. 

 Euryleptodes cavicola sp. nov. 



Nine specimens represent this species taken at various points 

 along the shores of Monterey Bay. It occurs, at moderately low- 

 tide mark, on the under surface of loose boulders or concealed in 

 crevices of the bottom rock or among the holdfasts of seaweeds. 

 Its movements are generally slow and deliberate, never sufficiently 

 vigorous to enable the animal to swim. The texture of the body is 

 very delicate, and three of the specimens show extensive signs of 

 partially regenerated injuries. 



The color of the dorsal surface is greenish-white, irregularly 

 marked with small, round white spots and dark red lines of varying 

 length and direction. As a general thing, there are five fairly well- 

 defined transverse lines, the first of which is immediately behind the 

 tentacles and the last not far from the posterior end. Two irregular 

 longitudinal stripes, at times ill-defined, commence at the first 

 transverse line at points midway between the edges of the body and 

 the median line and extend backward to the last transverse line. 

 The ventral surface of the body is unpigmented. 



The largest specimen is broadly oval (PI. XVI, fig. 29) and meas- 

 ures 31 mm. in length by 20 mm. in greatest width. The ventral 

 sucker is almost exactly in 

 the centre of the body. 

 The mouth is located about 

 one-sixth the length of the 

 animal from the anterior 

 end. The penis is directed 

 forward. Nuchal tentacles 

 are wanting, but the mar- 

 ginal tentacles (text fig. 9) 

 are very large, fleshy out- 

 growths of the anterior 

 body edge. Numerous 

 small eyes are scattered 

 over the tentacles and even 

 between them; and a 

 group of somewhat larger 

 eyes, divisible into two 

 closely approximated clus- 

 ters of about seventy each, overlies the brain 





.V 



Fig. 9. — Eyes of Euryleptodes cavicola. 



