82 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 8 



Feet with rudimentary end plate, or none at all, and numerous support- 

 ing rods, mostly 3 armed. Introvert and tentacles with perforated plates 

 and rods. 



Type. — Possibly in Germany. 



Type locality. — Coast of Peru. 



Distribution. — From Peru to the south end of South America, in- 

 cluding Falkland Islands, also Costa Rica. See Ekman, 1925. 



Depth. — Not recorded for the type. 



Specimens examined. — Numerous from the following stations of 

 Velero III: 

 365-35. Callao, Peru, of? southeast corner of Lorenzo Island, 10 fms., 



January 10, 1935, 21 specimens. 

 366-35. Callao, Peru, between rocks, south of Lorenzo Island, 8 fms., 



January 10, 1935, 1 young specimen. 

 384-35. Independencia Bay, Peru, % mile oflF shore, east side of bay, 



5 fms., January 14, 1935, 1 young specimen. 

 466-35. Parker Bay, Costa Rica, small island at north side of bay, 

 shore, February 9, 1935, 1 specimen. This record so far north 

 is unusual. 



Remarks. — The examined specimens range in size from 1.5 cm. to 6 

 cm. Even the smallest individual has a number of tube feet scattered 

 in the dorsal interambulacra and therefore cannot be mistaken for C. 

 calif arnica of the same size ; the latter species has, moreover, darkly pig- 

 mented tentacles. 



The spicules resemble those found in Cucumaria lubrica H. L. Clark 

 (including C. fisheri Wells) from the west coast of North America, and 

 it is rather difficult to express the differences in such variable forms. The 

 northern form seems always to have numerous 4-holed buttons which 

 apparently sometimes are lacking in the southern form. 



The name dubiosa has been preferred to leonina against such authori- 

 ties as Ludwig (1887 and 1898) and Ekman (1925). Semper's leonina 

 is supposed to have come from Singapore, and it is only a surmise that 

 it is identical with C. dubiosa. Since it is very unlikely that the same 

 species occurs in both Singapore and Chile and since the Chilean (and 

 Peruvian) locality is above reproach, it has been concluded that the 

 locality Singapore was wrong. But it is quite possible that C. leonina came 

 from Singapore; species with similar spicules are known from other 

 places, for example, C. kollikeri from the Mediterranean Sea and C. 

 salmini from Celebes. The latter was listed by Lampert, 1885, as occur- 



