486 CANAEIAN COIjEOPTEKA. 



C. Atropos, but differs from it in its head and prothorax being jier- 

 ceptibly wider — the former having the eyes more prominent and coni- 

 cal ; whilst the latter is altogether a little larger, or more developed, 

 considerably less attenuated behind, where it is of precisely the same 

 breadth as (instead of conspicuously narrower than) the base of the 

 elytra, merely rounded, instead of bisinuated, along the posterior edge 

 (and therefore less lobed in the centre, in front of the scutellum), with 

 the extreme hinder angles much less prominent, and A^dth the two 

 discal impressions transverse (instead of being rounded)*. 



Genus 271. SCLERUM. 

 (Dej.) Hope, Col. Man. iii. Ill [script. Sderon] (1840). 



729. Sclerum aspernlum, n. sp. 



S. parallelo-oblongum, squamis pallido-fuscis lutosis densissimc tec- 

 tum ; prothorace antice lato rotundato, per basin profunde bisinu- 

 ato, grossc asperato-granulato, j)ostice utrinque longitudinaliter 

 impresso ; elytris parallehs, striato-punetatis (punctis magnis sed 

 haud profundis), interstitiis alternis valde costato-elevatis (costis 

 minute crenulatis); antennis pedibusque brevibus, piceis, tibiis 

 anticis extus in medio valde angulatim dilatatis. — Long. corp. lin. 

 2-vix 3. 



Habitat Canariam Grandem australem,prope Maspalomas repertum. 



The mere generic characters of this insect, such as the greatly di- 

 lated fore tibiic and the costate alternate interstices of its elytra, 

 added to its asperated, anteriorly-widened prothorax and densely 

 squamose surface (the scales of which are of pale muddy-brown), will 

 prevent its being confomided with any of the Opatridce enumerated 

 below. It appears to be both rare and extremely local — the only sjjot 

 in which I have hitherto observed it being at the edges of a small 

 water-course close to Maspalomas, in the south of Grand Canary, 

 Avhere, during the spring of 1858, I captured it, not uncommonly, 

 from beneath stones. 



Genus 272. OPATRUM. 



Fabricius, Syst. Ent. 76 (177-3^. 



§ I. Alis magnis. 



730. Opatrum lutosum, n. sp. 



0. paraUelo-oblongum, dense fusco-pubescens et -squamosum ; genis 

 ante oculos valde exstantibus, angulatis ; prothorace granulato, 



* Although these distinctions are small, and necessarily, therefore, somewhat 

 difficult of observation, they are not the less real — being very distinct when the 

 two species are viewed, side by side, under the microscope. 



