On the Classification of the Crustacea Choristopoda. 309 
2. Styli caudales ts ap se vix exserti, simplices, 2di lmigque ramis extus non pre- 
ue spinosis nec cultriformibus, interdum nudis, 
G. 3. Sean Dana.—Corpus superne visum subellipticum, abdomine bene 
inflexo, Antenne flagello brevi sepe instruct, inferiores cae a superiors 
appendiculate. Pedes Imi 2dique subchelati, 2dis validioribus. Pedes 10 pbstici 
mediocres. 
qa, nee SR eles Dana.—Platophio similis. Antenne superiores non appen- 
8. Styli caudales gad Fat oa —— ramo externo non a 2di Imique ramis 
yee — nec — 
G. 5. ober i pati 2dique manu onfecti, Imis ‘yimatcrtbte An- 
‘tenn agellis confecte, pi hare Bi aioe ap superiores paulo longiores, ap- 
pen a late, 
4, Styli caudales 3tii paulo elongati, biramet, ramo externo uncinato. 
G. 6. Popocervs, Leach.+—Pedes 1mi 2dique subchelati, 2dis validioribus. An- 
tenne superiores breviores, ae appeyds diculate. [An maris digitus 2dus inter- 
dum 2-articulatus fai Lends tes 
G. 7. Crarornium, Dana— Pode es 4 tat ral subchelati, 2dis validioribus. An- 
tenne superiores breviores, appendiculatz. 
B. prerrus 2pus 2-ARTICULATUS. 
@. 8. Crrarvs, Sa ay—Antenne pediformes, bibs flagellis carentes. Pedes 
i 2di P nn bene confectis. Styli caudales 
8tii biramei, ramis subeequis, longiuscul is. [ta membranaceum inhabitat.] 
G. 9. Crraropina, Edw. (Cerapus, Templeton). PL Sea Sahel fe vice, wet confectz. 
um 
. ATH edes 
: ocres, Epimeree ‘ateriéted es obsoletee. [An styli caudales 8tii sini i 
Subfam, 8. ICILINA‘—Antenne non pediformes nec oe — 
sat longis basique sat brevi instructe. Styli candales ae in Corephini 
G. 1. Toms, Dana—Pedes toti pon een et tenues, 4 antici longi, non prehensiles, 
ciliati, a0 post fore ee Antenne superiores breviores non appendiculatee. 
G. 2 Pedes 5 piariciog gaa, Antenne superiores 
isin: appendiculatiy tihcibaee basi dilata 
* Jour. Acad. Nat. Sci. Philad,, i, 
Glauconome = Kroyer has the aut and antennee and era the other char- 
acters of Unci describes the hands of the 2nd pair in Unciola ten 
nll they still ¢ are cts like those of Glauconome. Pithe following is Kroyer’ 
Jon -— 
“Antenna subpediformes; superiores flagello ornate ee perparvo. 
pa oa distincti, Maudibule apex in duos fissus s qui dentibus 
t sa conicis ; tuberculus molaris dentibus confertissimis instruetus. baer 
Ssuperius breve, depressum latissimum, margine anterior! medio inciso ; labiwm infe- 
rius sad compositum lamini 3 setosis. Lamine maxillares peat we 
dentibus armate validis ; unguis palpi apice setosus. . Pes prim parts i gp 
manu subeheliformai ; pes aon ris gracilior, manu carens eg ag — 
til, 4ti 6ti mi ue paris or 
dilatatig a oe petgraciles; ‘ Pe ee ak iy carte par aatrs beves eo robustissimi , 
4ti, 5tique paris saléatorii, validi; 6ti paris aie ye rudimentares, nata Epimera 
minima fi ntia.” 
+ Jassa of Leach may without ineonvenience be united to Podocerus, as there is — 
of co e size; and moreover no gressorial habits 
are therefore with some hesitation arranged in a genus named 
ng “rae er subfamily Gammarine, 
