331 



S. proxhiius, sp. nov. Pra^cedenti valde affinis ; capite pro- 

 thoraceque piceis, prothoracis angulis posticis paullo minus 

 acutis ; maris tibiis simplicibus, segmento apicali ventrali 

 sat leviter impresso. Long., 31.; lat., 1^ 1. (vix). 

 The present species might well pass for a dark form of the pre- 

 ceding, were it not for the different male characters, which are 

 almost confined to the somewhat closer approximation of the 

 eyes, the tibiw being quite like those of the female, and the 

 apical ventral segment being only lightly impressed, instead of 

 bearing a large deep round fovea. 

 S. Australia ; basin of Lake Eyre. 



iiEMiciSTELA (gen. nov. ? hujus fam.). 

 Caput sat breve ; mandibulse apice acuminatfe (?) ; palporum 

 maxillarium articulus secundus robustus quam tertius paullo 

 longior, apicali longitudine paruni brevior ; hie sat magnus 

 securiformis, labialium obovatus, vix triangularis ; oculi 

 (maris ?) inter se sat distantes ; antennae modice robustas 

 quam corporis dimidium vix longiores, articulo 3" quam 4'"^ 

 paullo breviori ; prothorax sat transversus, quam elytra sat 

 angustior, basi haud bisinuata ; femora subtus sulco minus 

 elongate impressa ; tibia? intermedi?e (? maris solum) intus 

 ante apicem emarginata ; presternum inter coxas haud eleva- 

 tum, his ilium sat fortiter superantibus ; unguiculis vix 

 manifeste pectinatis ; corpus oblongo-ovale. 

 The species for which I propose this name is a very puzzling-^ 

 one which does not appear to me to fit quite satisfactorily into 

 any known family. It has very decidedly the general appearance 

 of a Cistelid, and I think the possession of the following charac- 

 ters in combination will justify its being placed among the Cis- 

 telidce, viz., tarsi heteromerous, and furnished beneath with well- 

 defined lameUcp (two on each of the four anterior, and one on the 

 posterior), anterior coxal cavities closed behind. Nevertheless 

 the claws are not distinctly pectinated within (under a microscope 

 the inner outline seems to be finely crenulated), and the proster- 

 nal process, instead of being elevated to the level of the coxie, 

 passes between the coxse on the general plane of the surface, the 

 coxse rising (but not very strongly) above its plane on either side. 

 The apical spines of the tibia? are very short and slender. The 

 singular emargination of the intermediate tibiie close to the apex 

 of the inner margin is very likely to be sexual. The penultimate 

 ventral segment is about the same size as that preceding it. The 

 apical joint of the maxillary palpi is much like that of Homotrysis 

 tristis, Germ., in shape, but is relatively smaller. 



My unique type of this insect has its mandibles tightly closed 

 together, so that I have been unable to examine them as exactly 



