914 On the Classification of the Crustacea Choristopoda. 
G. 5. Aona, Kr.*— Corpus subdepressum, epimeris sat parvis. Antenns supe- 
riores longz, appendiculatz, inferiores subpediformes. Pedes 1mi 2dique manu 
subcheliformi, lmis maximis, articulo 3tio posticé in apicem longissimum pro- 
ducto, manu angustá, ungue fere lamellari. Manus 3tie 4txque articulo 4to 
. ovali instructze digitis artieulis 5to 6toque. Styli caudales saltatorii, 6tis "imis 
setis non aculeis apice instructis. 
2. Antenne 2de multo posteriores, fronte in rostrum producto. 
G. 6. PHoxus, AKr.]—Epimere permagne. Pedes 1mi 2dique manu subcheliformi 
validá instructi. Manus 3tiz 4tzque articulo 3tio 4toque junctis instructze, di- 
gitis 5to 6toque. Pedes 6ti multo longiores. Caput longum, triangulare, antice 
produetum et aeuminatum.  Antenn:s anteriores perbreves (capite breviores), 
elongate appendieulatz ; posteriores paulo longiores. Mandibulz palpo longis- 
simo. Segmentum caudale laminis constans duábus. 
Subfam. 6. ISAZEINAJE.[—FPedes quatuor vel sex postici subprebhensiles. 
G. 1. Isza, Edw.—G'ammaro similis. Pedes 10 postici similes, articulo 5to apice 
dilatato et truncato, ungue in articuli 5ti extremitatem latiusculam claudente. 
Pedes 2di manu grandi confecti, .Antennz superiores appendiculatz. 
G. 29. AwisoPus, Templeton.—Pedes 4 postici ac in 7seá, validiores, articulo 5to 
apice inferiore dentato, ungue magno. Pedes lmi tenues et breves; 2di manu 
angustà; 9tii manu grandiore; 4ti 5ti 1mis similes. 
Subtrbus HI. HYPERIDEA.S$ 
[In the first family of the Hyperidea, (the Hyperido) neither of the 
5 posterior pairs of legs are subchelate, and the antennz are not folded 
up beneath the head or thorax. In the second, (the PAronimide,) one 
or more of the 3 posterior pairs of legs are subchelate or much en- 
larged, apparently for grasping in coition, and the antennze are as in 
the Hyperide.  'lhe third family (the Typhide) differs from both the 
preceding in the concealment and folding of the inferior antennsee be- 
neath the head or thorax, and in many of the species, the abdomen 
closes up against the venter.] | 
Fam. IL HYPERIDJE.|| 
* 
Antennz 2dz exsertze. Abdomen in ventrem se non flectens. Pedes 
oti 6t! 7mique formá longitudineque mediocres, 5tis 6tisve non percrassis 
nec prehensilibus. 
Subfam. 1. VIBILIN ZE.€| —Corpus formá paulo Gammaroideum. . Caput oculique 
mediocres. Maxillipedes palpo parvulo instructi. Palpus mandibularis tenuis. 
* 'l'ids. [2], i, 335, 1845. 1 Tids. iv, 150. 
l An genus Laphystius (Króyer, Tids. iv, 156, 1842) Iscinis vel Corophidis affine. 
Species in Sturiones Squalosve parasitica! Descriptio sequens :— TN 
Corpus latum, depressum, epimeris mediocribus, 4tis infra acuté productis. Caput 
transversum, rostratum. Antenne sat breves, subulatz, validz, 1m:e validissimee, 
anteriores, 2d» posteriores.  Mandibule palpo instructze. Pedes lmi gracillimi, 
manulineari; 2di breves, manu validá, ungue sublaminari Reliqui decem pedes 
validi, subcheliformes, longitudine subzqui. Styli caudales debiles. Palpus maxil- 
larum 1marum uniarticulatus. 
S Hyperines of Edwards, Crust. iii, 10: Zyperita, Cat. Brit. Crust. Brit. Mus. 56. 
| Familie du: nostre Hyperid:e et Phronimidz sunt Tribus * Hypérines ordin- 
aires" Edw. (Crust. iii, 74; et PAronimade Cat. Brit. Crust. Brit. Mus., p. 56. 
«| Hwperines Gammaoroides, of Edwards, Crust. iii, 72. : 
