On the Classification of the Crustacea Choristopoda. 313 
fs 
G. 9. Menrra, Leach, D. imer ty li 
caudales uno ramo — eee sive ence, altero brevi Se obso- 
len [Digitus in manus sate spe claudens,] Antennz lime sepius longiores. 
** Antenne Ime appendiculate, 
G. 10. Mara, Leach, D—Epimere et styli caudales achat ac in Melitd. 
8. Styli caudales postici simplicissiot, ramo uno brev € py ance paulo reflexo et 
spinas duas perbreves paulo pies 9 gere 
_G@.11. Dercornor, Dana—Epimere mediocres, 5 mye “site Atis sepius 
vix breviores. Pedes Imi 2 2dique digito ‘ce ae 8 confect 
G. 12. ye ius, Dana, (Eviehtonios, Edw,?)—Epimere a res vel breves 
corpore ese lepre: , S longs, flagellis sat longis. 18 Imex 
oye ie bia spe in ctx, digito peenene. 2de digito 2-articulato. 
ek ane hujus sedis ¢) Pana Kréyer.*—Epimere breves. Pedes 1mi 
2dique digito 2-articulato manuque Lartionlath peatrunth Antenne tenues, lmze 
appendiculate. 
B. FRONS PRODUCTUS ANTENNASQUE 1MAS VERSUS EXTREMITATEM GERENS. 
[AN SPECIES COROPHIDIS AFFINIORES.] 
G. 14. Aryius, Leach—Iphimedi e paulo affinis. Antenns eg tm o g brevi- 
ores, non appendiculate. Digiti 1mi 2dique ihi-articeue 
G. 15. Iscurrocerus, Kréyer.t-— Guts aulo affinis. <ihesices pediformes, 
Ime appendiculate. Palpus mandibularis longus, articulo ultimo obovato. 
Pedes shi me maris manu validissima instructi. Digiti uni-articulati. Epimers 
es, 
II. pepEs 10 postict PARTIM PREHENSILES, 
Subfam, 5. PONTOPORIN &.—Pedes 3tii 4tique plus minusve prehensiles; 6 
postici non prehensiles. 
1, Antenne ode ate ef non STDs 
G. 1. Lermacryus, Say.t—Epimere Ant superior es appendiculate, 
inferiores basi eh, me dilatatee ¢ et pi dolabriformes. Pedes 4 antici fili- 
5ti 6ti 7 mique 
de spodetie s 
G. 2. Ponriroreta, Ar. Meno re Magne. tenn superiores appendiculate, 
— Kise) 2dique grains robust, —s sian laté ungue _— morgen si 
; 8tii 4tique validi, manu rticulo 4to dilata o instructa, u 
a raate : 
G. 3. Anrezisca, igr|-—Egimens m enne graciles. Boies. Imi 2dique 
manu nulla subcheliformi; 3tii 4tique manu ee 3tio meray g-2 oa. 
lis 3 sequentibus formato, articulo ultimo vel ungue lon ngissimo et grac ee 
Me pane. 5-articulati, ungue rudimentario ninth immobili (vel pein mobili). 
t 
9. 4, Paorowe a ae scans subdepressum, epimeris sat deen An- 
culate, inferiores ig te og es, basi prelongo. Manus 
instruc gi artic 
coalitis. Pedes 2di parvi, manu heliformi non ao i. 
* Tids. iv, 153, 1842.“ Caput erassiuse um.” Ose parngaoreneroeg tics 
ridenta articulato.” “Pedes 3tii 4tique 
subtiliter Sn hae “Pedes spurii [abdominales] 2di Pi ot 341 P paris natatorii, reliqui 
sal . 
t Tids. iv, des spor i eau pr elitr articulus basalis 6ti paris 
Joa ba trap le eee Dis Bellia of C. Spence Bate (Ann. 
$ Jour. Acad. Nat. Sci. 
ag. N. Hist. 185 ais. 
, 152, . c" emg as ai ne ta rm an i 
184. [Seats Sextum pedw inalium Y 
So err, 
ale 
‘ok ” 
