238 NATURAL HISTORY BULLETIN. 



tacle which are mentioned are probably merely an appearance 

 produced by the coloration of the tentacles, such an appearance 

 being thus produced in A. sol. 



To sum up then it seems probable that A. bicolor is merely 

 a young specimen of A. tricolor. The similarity of the locality 

 and the characteristic color mark around the mouth indicate 

 the identity of A. tricolor and A. egletcs; the Cuban form 

 here described is almost certainly identical with A. cgletes; 

 and finally the A. sol of the Carolinas is undoubtedly identical 

 with the Cuban specimen. If this series of identities be ac- 

 cepted the name which has the priority is Lesueur's A. tricolor 

 and the species should be known as Adamsia tricolor (Les.). 



6. Sagartia spongicola Verrill, 1883. 



Station No. 29. Sand Key light bearing N. about 6 miles; 

 116 fathoms; numerous specimens. 



Station No. 51. American Shoal light bearing N. by W. 

 10 miles; about 100 fathoms; 3 specimens. 



These specimens I have been able to compare with speci- 

 mens from the collection of the United States Fish Commis- 

 sion identified by Professor Verrill and can accordingly vouch 

 for the correctness of their identification. The base is of the 

 adherent type and the column is nearly cylindrical, broadening 

 slightly above and measuring from 2.3-2.5 cm. in height by 

 about 1 cm. in diameter. In several specimens the dimensions 

 fell considerably below these figures. The contraction of the 

 column was incomplete in all the specimens, the tentacles be- 

 ing more or less exposed and the disk and peristome visible in 

 some cases. The ectoderm had for the most most part mace- 

 rated away in all the specimens, the patches of it which per- 

 sisted having the dirty white color frequently seen in alcoholic 

 material. The outer surface of the mesogloea was raised into 

 ridges, irregular in size and distribution and probably due to 

 contraction. Small depressions were visible here and there 

 on the column wall but I found no structures which I could 

 positively regard as cinclides, nor any traces of verrucas, such 

 as Verrill ('83) describes on the upper part of the column. 



