NOTARCHUS. 149 



head and margin of sole) a specimen from Little Gasparilla Bay. 

 Some others from the same locality have less developed appen- 

 dages. 



N. INTRAPICTUS Cockerell. Unfigured. 



Length about 4i inches. Body swollen, subglobose ; foot flat- 

 tened, posteriorly broad, terminally acute. Neck subcylindrical, 

 moderately thick. Anterior pair of tentacles large, branched, 

 antler-like, retractile. Posterior pair large, cylindrical, somewhat 

 tapering, hollow, with open truncate ends, and with two whorls of 

 spine-like, soft, lateral branches ; these and the other tentacle like 

 processes on the body are also retractile. On the middle line of 

 the neck, between the pairs of tentacles, is a short but broad 

 branched filament. Epipodia contiguous in the middle line, but 

 with the anterior and posterior parts separating alternately, form- 

 ing wide cavities, in respiration. The anterior of these cavities 

 serves for inspiration, the posterior for expiration,. and the whole 

 respiratory cycle takes about five seconds. Quite a jet of water can 

 be thrown from the posterior orifice. Sides of epipodia and body 

 with many branched processes, some short, others long, the largest 

 resembling the anterior cephalic tentacles. On the sides of the epi- 

 podia are three longitudinal series of these processes one dorsal, 

 one sub-dorsal, one lateral or sub-pedal. Each row numbers four 

 processes, and the rows are so placed that, as a general rule, the 

 processes of the dorsal row are more posterior than the equivalent 

 ones of the lateral row. Sides of foot with many processes. 



Color, prettily marbled with black and pale gray, dorsal portions 

 of epipodia and sides of neck with most black. Most of the tenta- 

 cles or processes tinged reddish, the larger ones mottled with white. 

 Inside of epipodia gray with white dots. Sole finely speckled all 

 over grey and white. ( CklL). 



Kingston, Jamaica. 



Aclesia intrapieia CKLL., Ann. Mag. Nat. Hist. (6), xi, March, 

 1893, p. 219. 



Described from a living specimen. 



The anatomy, so far as I examined, agrees in all important points 

 with that of Aplysia. The narrow white fore-gut enlarges rapidly 

 to form the big gizzard, which is pale red in color. In this gizzard 

 I found four (and a fifth rudimentary) little bodies, more or less 

 triangular in outline, about 5 millim. diam., color pale yellowish- 



