200 Mr. T. Vernon Wollaston on the 



§ II. Elytra setis ereclis carenlia. Palporiim lahialimn articulus 

 ultimus apice vix excavatus (j. e. obsolete sub-excavatus) — 

 Subg. Pithodes, Woll. 



5. Casapus suhcalcus, n, sp. (PI. VIII. fig. 3.) 



C. piceo-niger vel piceus ; prothorace picescenti, antice vix 

 dilatato, costis discalibus postice sat distinctis, lateralibus sub- 

 obsoletis, ad basin dense fulvo-squamoso ; elytris ovatis, basi 

 paulo truncatis, leviter striato-puiictatis, subcalvis (sed parce 

 et brevissime pubescentibus et ad basin plus minus parce 

 setulosis), costulis 4 basalibus (praesertim huraeralibus) sub- 

 obsoletis, fascia postmedia indistincta (plerumque omnino 

 obsoleta) albido-ornatis ; antennis pedibusque subelongatis, 

 sat robustis, rufo-ferrugineis, squamosis. 

 Long. Corp. lin. vix 1§ — 2. 



Habitat in ins. Hierro, rarissimus, — a Dom. Gray et meipso, 

 mense Februario a.d. 1858, baud procul ab oppido Valverde sub 

 lapidibus parce captus. 



The C. subcalvus is at once conspicuous amongst the other Casapi 

 here described by the total freedom of its elytra (which are ovate, 

 and somewhat narrowed in front) from erect pile, — a few stiff (and 

 often very short) setae about the shoulders and extreme base being 

 alone visible. There are, however, indications, beneath a high 

 magnifying power, of an excessively minute, and sparing, de- 

 cumbent pubescence, which does not exist in any of the preceding 

 species. Its prothorax is small, hardly at all dilated anteriorly, 

 and with its two dorsal costae pretty evident behind, but with the 

 lateral ones sub-obsolete. The humeral ridge at the base of either 

 elytron is almost evanescent, but the submedial one is tolerably 

 distinct; and the first joint of its posterior male-feet (3 b) is very 

 greatly enlarged. In most of the specimens which I have seen 

 (thirteen in number) there is no indication whatsoever of paler 

 fasciae ; but in one or two examples there are obscure traces of a 

 broken transverse band behind the middle of the elytra. It is a 

 somewhat aberrant member of the present genus, not only from 

 the fact of its elytra being free from erect hairs, and from its 

 having the basal articulation of its hinder male-tarsi more power- 

 fully developed than is the case in any of the preceding species, 

 but likewise (which is still more important) from the extreme apex 

 of its labial palpi possessing only the slightest tendency {vide 3 a) 

 to be scooped-out, — though this peculiarity of structure is at any 

 rate sufficiently expressed to leave no doubt of its being, at all 

 events, just recognized. In many respects it approaches tlie Fiotes 

 vestita (which is, also, aberrant in its particular group), from 



