186 THE BERMUDA ISLANDS. 



surface of the interior of the mantle lobes and of the oper- 

 cular covering. The shell in the Bermudian form is compara- 

 tively narrower than in any other large species of Aplysia 

 with which I am acquainted, and wholly different in outline 

 from that of either of the two species above referred to. I 

 have fully satisfied myself on this point through an examina- 

 tion not only of the figures furnished by Rang and D'Orbigny 

 but of actual specimens. 



Dobson, in a communication made before the Linnsean Soc- 

 iety of London (Jour. Linn. Soc, Zoology, xv, p. 159, et seq., 

 1881), identifies a specimen of Aplysia from the Bermudas 

 with the A. dactylomela, and describes the color as being " a 

 rich drab, marked all over with circles and streaks of velvet 

 black, the latter most abundant on the mantle covering the 

 shell and on the lateral swimming lobes. The shell agrees in 

 all respects with that of A. dactylomela as figured by Rang, 

 and the only difference observable is that the margins of the 

 swimming lobes are not tinged with violet. This might be 

 accounted for by supposing that such a fugitive color had dis- 

 appeared in the alcohol, but the captor does not remember to 

 have seen it in the living animal." This may be the true 

 A. dactylomela or A. ocellata, but it is, doubtless, distinct from 

 the species above described. I am confirmed in this supposi- 

 tion by the examination of a specimen recently collected by 

 Prof DoUey in the Bahamas, and which has been placed in 

 my hands through the kindness of Prof. Leidy. This Baha- 

 man form has the massive ocellation and blotching distinctive 

 of A. ocellata or A. dactylomela, and further agrees with these 

 two species (or varieties) in the form of the shell. The stellate 

 opening to the opercular cavity appears to be destitute of a 

 papilla. This is the form, probably, that Mr. Dobson received 

 through Surgeon R. Vacy Ash. 



Deshayes described some years ago an Aplysia, ocellated 

 and of a yellowish color, from Guadeloupe .{Journal de Con- 

 chyliologie, 2d. ser., ii, p. 140) under the name of Aplysia 

 Schrammii, but the species is so imperfectly characterized that 



