316 On the Classification of the Crustacea Choristopoda. 
9. Manus pedis bti elongatà lineares, digito recto, longissimo, tenui. 
G. 3. 'TüeurisTo, G'uerin.—Pedes 3tii 4tique prehensiles, manibus latis. 
Subfam.3. PHORCINZE.—Pedes 5ti 6tive valde elongati et crassi, sed manu 
non confecti. [Antenns breves.] - 
G. 1. PHORCUS, -Edw.—Pedes 1mi 2di 3tii 4tique graciles, unguiculati, 5ti 6tique 
prlongi, $ti aciculares, 6ti crassissimi. 
Fam. III. . TYPHIDAE.* 4 
Antennz 2dz sub capite thoraceve celatze et seepius replicate. — Ab- 
domen in ventrem szpe se flectens. Pedes 6 postici interdum abbre- 
viati, articulo Imo operculiformi, interdum longitudine mediocres. . 
Subfam.1. TYPHINJZE.—Abdomen in ventrem se flectens. 
G. 1. Drrmynus, Dona.—Pedes 5ti 6tique articulo 1mo laté lamellati, articulis 
reliquis omnino obsoletis, Antennsx 2d: breves, sub capite celatze, non repli- 
catze, articulo 1mo longiore quam 2dus. 
G. 2. Typus, Kisso.—Pedes 5ti 6tique articulo 1mo late lamellati, articulis reli- 
quis paulo abbreviatis. Antenn:e 2de biplicatz, articulo 1mo longiore quam 
—. 2dus. 
G. 3. Tuynorus, Dana.]—Pedes 5ti 6tique articulo 1mo late lamellati, articulis 
reliquis paulo abbreviatis. Antenns 2d: 4-5-plicatz, sub thoracis latere cela- 
te, articulo 1mo multo breviore quam 2dus. 
Subfam. 2; PRONOINZE.—Abdomen in ventrem se non flectens. Caput non 
oblongum, antennis frontalibus. 
G. 1. PRoNor, G'uérin.—Pedes 2di non prehensiles. Pedum 6 posticorum articuli 
1mi lati, reliquá parte paris 'mi fere obsoletà. 
G. 2. Lxoxa, Dana.—Pedes 1mi 2dique subchelati. Articuli pedum 6 posticorum 
1mi angusti, subzequi, reliquá parte paris ''mi paulo abbreviatà. 
Subfam.3. OXYCEPHALINE.—A bdomen in ventrem se non flectens, Caput 
oblongum, antennis lmis superficiem capitis inferiorem insitis. 
G. 1. OxvcePnaLvs, Edw.—Caput breviter acuminatum. Styli caudales longitu- 
- dine mediocres. 
G. 2. Ruasposoua, White.]—Caput rostro longo styliformi armatum, Styli cau- 
dales valde elongati. 
* Hypérines anormales of Edwards, Crust. iii, 94. Typhide, Cat. Brit. Crust. Brit. 
Mus, 57. 
1 Species T'yphis feroz (Edw.) is here included. 
1 Crust. Voy. Samarang, p. 63, pl. 18, f. 7r. 
Errata. in J. D. Dana's paper on the Crustacea Choristopoda. — T". 
í n o LL i 
. 302, 15th line iron top, for 6-articulatum, read 1-6-articulatum. i 
'P. 305, last line, for 92, read 192. 
306, 5 lines from bottom, for iii, read viii. 
307, 14th line from top, after thoracis insert femine. 
368, 95th line from bottom, for sex, read 1m: 2dzque. 
315, 9th line from top, for nudo, read nullo. 
nro rds 
[Eztracted from the American Jour. of Science and. Arts, 2nd Series, Vol. XIV, Sept. 1859.] . 
