35 Crust. 
CKUSTACEA. 
rostrum very short, eyes free, antennulae with two very short flagella, 
auteniial scale very small, flagellum moderate, external maxillipeds short 
and stout, first pair of periopods shorter and stouter than the second, which, 
in turn, are shorter than the remaining pairs, the carpus 2-articulate. C. 
gihherosus\^-a]^ sp. n.. Fort Macon, North Carolina. Kingsley, P. Ac. 
Philad. 1879, p. 414. 
Gnathophyllum zebra, sp. n., Richters, Decap. Maur. p. 161, pi. xvii. 
figs. 18-20, Mauritius. 
Atyidac. 
Kingsley (P. Ac. Philad. 1879, pp. 414-416) arranges the known genera 
as follows : — 
1. — Subfam. Atyina, periopods without exopodite : Atya, Evatya, 
Atyoida, Caradina \_Caridina^, AtyepTiyra, Troglocaris. 
2. — Subfam. Ephyrinas, periopods with an expodite : Miersia. 
Atya moluccensis (Haan) == armata (M.-E.), Miers, Ann. N. H. (5) v. 
p. 382, pi. XV. figs. 3 & 4, Java, Bali, Macassar, Batchian. 
Caridina desmaresti (M.-E.) : generic characters discussed by Boas, 1. c. 
p. 60, pi. i. fig. 26, pi. ii. fig. 47, pi. Hi. figs. 82 & 106, pi. v. figs. 151 & 163, 
among all “ Eukyphota,” it is nearest to tho Pcnceidce. 
Caridina typus (M.-Edw.), Seychelle Islands and Mauritius, freshwater, 
spathuUrostris and serrata, spp. nn., botanical gardens at Pamplemousses, 
Mauritius, longirostris (Roux), also from the Seychelles ; Richters, 
Decap. Maur. pp. 162 & 163, the three former pi. xvii. figs. 23-28. 
Miersia, new name for Ephyra (Roux, M.-E.), pro-occupied ; Kingsley, 
P. Ac. Philad. 1879, p. 416. 
ALPHEIDiE AND PaLJIMONID^. 
Kingsley (P. Ac. Philad. 1879, pp. 416-426) unites these two families 
into one, Palamonidce, characterized by the deeply bipartite stout, incurved, 
mandibles, with narrow oblong apical process, and subdivides it as 
follows : — 
1. — Subfam. Alphein^, first pair of feet the largest, chelate, second 
slender, filiform, generally chelate, carpus frequently annulate. 
Sect. 1. — Mandibles with a palpus: Alpheus, Alope, Arete, 
Athanas, Ilippolyte, Caridion, Bythocaris^ Cryptocheles, 
Ehynchocinetes, Ogyris, Pterocaris. 
Sect. 2. — Mandibles without a palpus : Autonomea, Virblus, with 
subg. 'Phor. 
2. — Subfam. Pandalina 3, antennulae biflagellate, mandibles with a 
palpus, anterior periopods very slender, not chelate, &c. : 
Pandalus. 
3. — Subfam. Palasmonina;:, two anterior pairs of periopods chelate, 
carpus of none annulate, second pair larger than the first, 
periopods without palpi. 
Sect. 1. — Mandibles without a palpus. 
(a) Antennulae biflagellate : Typton, Pontonia, Coral- 
liocaris, Ilarpilius, Anchistia. 
