Zoological Society. 8 Id 



2. Brancuipus spiNOSUS, M. Edwards. Antennit inferioribua 

 . - .maris magnisy cylindricis, apice acuminatis ; appendicibus an- 

 tenniformlbus ciwtis, crassis ; abdominis segmentis infra spini- 

 feris. .llutj ^ •^♦lt>«^ 



Long. 1 poll. 2 1m. T Tid jslftgBffoS ,?.4i«no\^'>i»^ ?.Mf\V nv8 

 Branchipus spinosus, M. Edwards, Hist. Nat. Crust, iii. 367. - * 

 Hab. In lacu salino " Hadjibe," in vicinitate urbis Odessse ; iM. 

 Nordmann. jh^ 



This species, which was discovered by Professor Nordmann in'! 

 salt lake near Odessa, is upwards of an inch in length. The inferior 

 antennae of the male are large, cyhndrical, the terminal articulation 

 being sharp at the point. They possess no tooth or process, and the 

 antenniform appendages are very short compared with those of the 

 preceding species, and of a considerable degree of thickness. The 

 front of the head has no prolongation. The feet are short. The seg- 

 ments of the abdomen are armed underneath with sharp spines, and 

 the caudal fins are short and plumose. The male organs are short 

 and obtuse. 



Genus Streptocephalus. 



Corpus cylindricum, segmenUim caudale pinnis duabus ciliatis in- 

 structum ; pedes undecim ; antennce inferiores maris triarticu- 

 latce, valde tortuosce, ad apicem in ramos graciles divisce, ap- 

 pendicibus antenniformibus armatce. 

 In the structure of the body, abdomen, and feet, this genus rer 

 sembles entirely the preceding. The inferior antennae, or cephalic 

 horns, in the male, however, are very different in structure ; they 

 are longer in proportion than the corresponding organs in the Bran- 

 chipus, consist of three articulations, and are singularly twdstedj and 

 bent as it were into elbows. The terminal joint divides at the apex 

 into two branches. They are inhabitants of fresh water. Only two 

 species have as yet been described, and I now add a third to the 



oul* Streptocephalus torvicornis, Waga. Antenhis iUferwri- 



^Al dhus maris validis, ramis terminalibus elongatis, serratis, interna 



'Aa^ longiore, processu triangulari brevi armatOy appendicibus an- 



.[ tenniformibus elongatis jiliformibus ; front e prolong atOy acumi- 



nato ; ovario externo conico. :d'j-j 



Long, maris 1 poll., foeminse circa 14 lin. yo^d 



Branchipus torvicornisy Waga, Ann. Soc. Ent. de Franc^adi 36*. 

 i. 11. f. 1-4. onbffrfvo 



Hab. In vicinitate urbis ** Warsaw ; " Krynicki. 



This species, which was discovered by M. Krynicki in a muddy 

 stagnant piece of water near the town of Warsaw, is upwards of an 

 inch in length, the female behig longer than the male. The inferior 

 antennae or cephalic horns of the male are very large, when extended 

 equalling in length the whole body. The basal joint is strong, and 

 broad at its junction with the head ; the second is short, and the third 

 is divided at the apex into two branches, which are long, slender and 

 serrated on their iimer edges, the internal one being the longer, bent 



