On OrtJwptera from the River Ogovi. 257 



the body, separated from the rest of the gill by a long 

 distance. Only the inner gill is present. Anteriorly in the 

 umbonal region, and closely associated with the gill poste- 

 riorly, is a prominent organ of unknown function. The 

 sexual duct is mainly of mesodermal origin. 



XL. — A List of the Orthoptera, Hymenoptera, and Hemi- 

 ptera collected by Miss Kingsley on the River Ogove^ with 

 Descriptions of some new Genera and Species. By W. F. 

 KiRBY, F.L.S., F.E.S., &c., Assistant in Zoological 

 Department, British Museum (Natural History), 



[Plate XII.] 



The collection formed by Miss Kingsley, though small, 

 contained several species of considerable interest, in addition 

 to the novelties; and hence I have thought it worth while to 

 prepare a complete list. Eight species in all are here 

 described as new, for two of which it has been necessary to 

 establish new genera. It is, however, to be regretted that 

 in most cases only single specimens were received, and several 

 of them were immature, or the number of new species might 

 have been larger. 



Order ORTHOPTERA. 



Family Blattidse. 

 Subfamily Panchlorin^ 

 Trichomera, gen. nov. 



Female. — Apterous; front of head rounded, projecting 

 beyond the ])rothorax ; face hardly oblique ; antennge thick- 

 ened at base and tapering to tips ; prothorax moderately 

 arched, the hinder angles rounded off, those of the meso- and 

 metathorax less rounded and more produced backwards; 

 tibise strongly spined above, but femora with no spines, but 

 only clothed with fine hair; abdomen very broad, supra-anal 

 plate triangularly emarginate at the extremity to nearly half 

 its length ; cerci very broad, pointed at the end, and a little 

 shorter than the supra-anal lamina. 



The unarmed femora place this genus in the Panchloringe, 

 but in shape it resembles the females of some of the Blattinse. 

 The male is probably winged. 



