il 
120 Scientific Intelligence. 
The following are the families thus deduced, with dis genera of 
Corystoidea and "their characteristics. 
Fax. L "TRICHOCERIDJE. 
Carapax formá Cancroideus, fronte non rostratus. Antennz internze 
longitadinales. X Antennzse externz breves, flagello parce piloso. Max- 
illipedes externi super epistoma non producti, sed margini arez 5 mid i 
bene adaptati. qus M 
TT 
"E 
QW 
Gen. T'zicHocERA, DeHaan.*—Frons dentatus. Articulus maxilli- - 
pedis externi 3tius apice truncatus. Articulus antennarum ex- - 
ternarum 1mus elongatus, hiatum orbitze bene occupans. 
Faw.ILl. "THIIDAE. 
Carapax suborbicularis, non oblongus, fronte non rostratus. .Ánten- 
na internz transverse vel oblique. — Antenne externe breves, flagello 
parce piloso. —Maxillipedes externi super epistoma producti. T o) 
Gen. 1. "Tura, Leach.—Frons integer, arcuatus. Ántennz interne 
transverse. Pedes nulli natatori. — Articulus maxillipedis ex- 
terni 3tius vix oblongus. 
Gen. 2. Knaussia, Dana.t  Carapax paulo transversus, margine 
postero-laterali brevi, fronte denticulato, medio emarginato. An- 
tennse internse oblique. Pedes 8 postici natatorii, tarso falci- 
formi. Articulus maxillipedis externi 3tius vix oblongus. 
Fax. III... CORYSTID/E. 
Carapax sive suborbicularis sive multum angustus, fronte plus mi- 
"E 
nusve rostrato. Maxillipedes externi super epistoma produeti ^ AE 
1. Pedes nulli natatorà. 
G. 1. TerLwessus, White.$—Carapax parce transversus, pone me- 
dium latior, fronte paulo producto et medio emarginato. Articulus | 
antennarum externarum lmus elongatus, processu elongato [o 
tum orbitee bene occupans. Articulus maxillipedis externi Stius. 
parce oblongus apice triangulatus, articulum 4tum prope apicem i 
gerens. 
G. 9. ArELECYCLUS, Leach.S —Carapax fere orbicularis, lateraliter 
arcuatus, fronte paulo producto. Articulus antennarum exter- 
* Faun. Japon. (1833), p. 16. 
1 Ad species complectendum AXantAo integrum Haanii, (Faun. Japon. 66, tab. 18, 
f. 6) et Platyonychum rugulosum Kraussii (^ Südaf. Crust." 26, tab. 1, f. 5), This affines 
et Xantho remotas, genus * Kraussia" institutum est. Platyonycho diserepat mar- 
gine x vostero-laterali breviore quam antero-lateralis, carapace paulo transverso, fronte 
bilobato et denticulato, flagello antennarum internarum subpiloso. An Trichocera 
gorcellana (A. White, * Voy y- Samarang, ^ p. 59) a Kraussii specie differt ? 
I A. White, * Ann. "Mag. Nat. Hist." xvii, 497, 1846; Voy. Samarang, 14, tab. 3. 
Atelecyclo, habitu, antennis aliisque, Kraussia affinis : ejus affinitas Maioideis, ab 
Adamsio White edita, justa non videtur. 
8 Chlorodius Haanii, Faun. Japon., 18. 
a»: 
» 
^ A m X * 
i AS 
ve et 
E 
^ - 
x^ 
ero 
