CRUSTACEA. 363 
JJtypno^es, g^. ri., TIesse, t e. p. 25G. Cepliftlon Inrgo, trinngiilar ; eye nrie- 
dian ; antennse broad and flat ; pereion cylindrical, thick, and short ; somites 
distinct, subeqiial ; pleon small, terminating in a double flat extremity ; the 
rest much as in the previous genus. Hypnodes Jlavus $ ^ Hesse, 1. c. p. 247, 
pi. vii. figs. 1-10, foimd in an Ascidian. 
It is near this position that we think the following genera 
must be plaeed : — 
Psilomalliis hippolytes, Kroy. Naturhisk. Tidssk. 1864, p. 410, on Hijypolyte 
aculeata) and 
Pomisa, g. n., Nordm. 1. c. p. 494. Female. 5^5 ths of an inch. Long and 
narrow, consisting of nine somites besides the cephalon, which, with the an- 
terior somite of the pereion, forms a triangle of which the apex is anterior j 
pleon consists of three somites, of| which the last supports a pair of biarticu- 
late appendages. Donum clymenicola, sp. n., Nordm. 1. c. p. 497, tab. vii 
figs. 4-6, from the west coast of Sweden, 
Lyyephile, g. n., Hesse, t c. p. 266. Cephalon triangular, large.; e}^e me- 
dian ; antennae multiarticulate ; pereion long, flat below, arched above ; so- 
mites distinct, the posterior provided with two lateral flat processes ; pleon 
short, cylindrical, somites apparent, terminating in a rounded, deeply -cleft 
plate. Lygephile violaceus $ , Hesse, 1. c. p. 249, pi. vii. figs. 1 A-19, found in 
a compound Ascidian. 
Lern^opodid^. 
Prof. Heller (Reise Fregatte Novara, p. 238) has tabulated, 
the genera of this family under two heads— 
I. Corpus pedibus maxillaribus instructum. 
II. Corpus pedibus maxillaribus destitutum. 
each of which are again subdivided. 
Achtheres pimelodi, Kroy. Natur. Tidssk. pp. 346 & 349, tab. xvii. figs, 6 a, 
on Phnelodus hiacidattes, from Cincinnati ; A. lacee (Kllr.), Kroy. 1. c. pp. 348 & 
349, tab. xvii. fig. 6, on Perea loca from North America. 
Lernceopoda salmonca (Linn.), Kroy. 1. c. pp. 349 & 351, tab. xiv. fig, ^a-f\ 
L. sehastis, Kroy. 1. c. p. 363, tab. xvii. fig. 7 a-li^ from Greenland ; L. car- 
pionisj Kroy. l.c. p. 351, tab. xiv. fig. 4 a-g. 
Charojunus, g. n., Kroy. I c. p. 361. Femina. Caput [cephalon] mediocre, 
subconicum vel obclavatum, collo nullo vel brevi. Pedes et anterioris paris 
subcheliformes et posterioris paris (vel brachia) dorso animalis alRxi ; abdo- 
men (pleon) .... rudimentarium Charopinm dalmanni (Retz.), Kroy, 
I, c. pp. 364 &; 462, tab. xiv. fig. 6 a-g ; C. ramosus, Kroy. 1. c. pp. 368 & 362, ' 
on Paia clavata from Denmark. 
Thysanote, g. n., Kroy. 1. c. p. 362. Caput [cephalon] collumque brevia, 
crassa Brachia brevia, crassa, infra et ad latera quatuor fimbriarum 
longarum .... Abdomen .... deest. . . . Thysanote pomacanthij^T^. n., Kroy. 
1. c. p. 362, on Pomacanthus pant from the West Indies. 
Brachiella rostrata, Kroy. 1. c. p. 364, tab. xvii. fig. 8 a~f, on ilippoglossus 
maximus from the Kattegat and on IL pingius from Greenland ; B. msidwsa, 
Heller, /. c. p. 239, tab. xxiv. fig. 1, on a species of Gadus from the Adriatic 
