334 



^GA Leach. 



Mga, Leach, Trans. Linn. Soc. XL p. 369; Dict. sc. nat. XII. p. 



349. — Desmarest, Cons. gen. Crust. p. 304. — Milne Ed- 



wards, Hist. nat. Crust. IIL p. 238. — Dana, Unit. Stat. 



Explor. Exp. Crust. II. p. 747. — Luetken, Vid. Medd. Naturh. 



Foren. f. 1858. p. 65. — Sp. Bate and Westwood, Brit. Ses- 



siley. Crust. II. p. 276. 

 Pterelas Guerin, Mag. zool. Cl. VII. Pl. 20. — Laniarck, Hist. 



anim. s. vert. 2. ed. V. p. 275. — Milne Edwards, Hist. nat. 



Crust. III. p. 244. 

 Rocinela Milne Edwards, Hist. nat, Crust. HI. p. 243. — Dana, 



Unit. Stat. Explor. Exp. Crust. II. p. 747. — Nec ! Leach. 

 Pterelas Dana, Unit. Stat. Explor. Exp. Crust. II. p. 748. 

 ^gacylla Dana, Proc. Acad. nat, sc, Philad. VII p. 176. — 



Pullus ! 



Corpus compaclim, plus vel minus robustum. 



Frons anle sapissime simplex, bisinuata, acumine declivo vel 



procumbente, articulum primum antennarum primi puris 



tolum vel magnam partem discernente. 

 Occiput bisulcatum. 



Larnina frontalis magna vel permagna. 

 Ocidi magni vel permagni, contigui vel distantes, obliqui, oblongi • 



ocelli minores vel majores. 

 Antennce primi paris longitudine varice, scapo articulis prioribus 



dilatatis, deplanatis vel fornicatis, flagello arlicidis muUis 



vel permiUtis, interdum fimbriatis. 

 Antennce secundi paris longce vel perlongce, flagello multi-arti- 



culato. 

 Segmenta dorsalia annulorum trunci subcequata, linea transversa, 



recta in areas binas partila ; area prior in adultis obtecta. 

 Epimera magna, carinis longitudinalibus in areas binas vel tcrnas 



partita. 

 Pedes prensorii breviusculi vel breves; fernora brevia vel brevius- 



cula, scepissime lumdata, aculeis crassiusculis , obltisis ar- 



mata; tarsi swpissime teretes ; uyigulce magnce vel majuscidce, 



teretes vel carinalm, curvatce, inter se swpissime paululum 



incequales. 

 Pedes gressorii longitudine aliquantum varii, plus vel minus 



dense atcjue longe spinulosi. 



