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. rnrrapictus Cockerell. Unfigured. 
Length about 4% 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. (Ck/l.). 
Kingston, Jamaica. 
Aelesia intrapicta Ckiu., 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- 
