DAP) DR. J. G. DE MAN ON THE PODOPHTHALMOUS 
151. ALPHEUS MINOR, Say. 
Alpheus minus, Say, Journ. Acad. Nat. Sci. Philad. vol. i. p. 245 
(1818); Milne-Edwards, Hist. Nat. Crustacés, t. ii. p. 356. 
According to Mr. Miers, this species, discovered by Say on the 
eastern coasts of North America, occurs also in the Indo-Pacific 
region. He was able to compare typical specimens from Hast 
Florida with specimens from the Indian Seas, which belonged 
to Alpheus neptunus, Dana, and observed no other differences 
between them than “ that the ocular spines and the rostrum are 
somewhat shorter and more triangulate in the Floridan examples 
than in the Oriental form” (Zoology of H.MLS. ‘ Alert,’ 1884, 
p. 288); he therefore united Alpheus neptunus with the species 
described by Say, regarding it as a variety of the latter. I 
acquiesce in his opinion, and moreover also regard Stimpson’s 
A. biunguiculatus from the Sandwich Islands as a variety of the 
very variable Alpheus minor. 
Although I suspect that A. trveuspidatus, Heller, from the Red 
Sea, and A. Charon, Heller, from the Red Sea and the Nicobar 
Islands, may also prove to be only varieties of Say’s species, 
I cannot at present decide this question, as there are no speci- 
mens at my disposal which present the characters of these two 
forms. 
15la. ALPHEUS MINOR, var. NEPTUNUS, Dana. 
Alpheus neptunus, Dana, United States Expl. Exp., Crustacea, i. p. 553, 
pl. xxxv. fig. 5. 
Six specimens, viz. three males and three females of unequal 
size, were collected in King Island Bay, and doubtless belong to 
this species. All the female specimens are provided with eggs ; 
the largest of them measures 21 millim. from the tip of the rostrum 
to the end of the terminal scale, whereas the smallest is only 15 
millim. These individuals present the following characters :— 
The ocular spines and the rostrum are of equal length and 
extend to the middle of the first (or antepenultimate) joint 
of the peduncle of the internal antenne. The second joint of 
the latter is scarcely longer than the first, but is distinctly longer 
than the third joint. The distal half of the terminal joint 
of the outer foot-jaw projects beyond the peduncle of the 
external antenne. The rounded upper margin of the palm of 
