C'ANAIUAX C'OLEOrTERA. 357 



the plants of the Chrysanthemum frutescens, Linn, (known locally as 

 the " Magarza "), upon the slopes of the low mountain-ridge imme- 

 diately outside (and to the north of) San Sebastian. It was in toler- 

 able profusion, and many of the specimens were in coitu. It was 

 captured also by Mr. Gray, though more sparingly, in the same loca- 

 lity. The L. gracilis may be known by its slender outline (particu- 

 larly of the male sex), by its remotely (but not deeply) punctured 

 prothorax, by its elongate-oval (or elliptic) elytra, which fall away a 

 good deal at the shoulders, and by its surface being more or less 

 clothed, and tessellated, with cinereous scales, which have scarcely 

 any metallic tinge. Its males (which are often extremely narrow^) 

 have their front tibiae a good deal scooped- out towards their apex in- 

 ternally, and are free from additional erect pile ; but in the opposite 

 sex there are a few tolerably robust hairs scattered over the apical 

 portion of the elytra. 



552. Laparocerus dispar, n. sp. 



L. fusco-piceus, subnitidus, parce cinereo- (vix submetallico-) squa- 

 moso-nebiilosus sed pilis erectis carens ; rostro nitidiore, subtereti, 

 supra planiusculo vix canaliculato, minute puuctulato, oculis ro- 

 tundatis, prominentibus ; prothoracc parcissime sed profuude punc- 

 tate ; elytris convexis, punctato-striatis ; antennis robustis pedi- 

 busque rufo-ferrugineis ; funiculi art" 2'^" prime scnsim loiigiore. 

 Mas minor, multo angustior, prothoracis punctulis minutissimis in- 



termediis obsoletis, tibiis anticis vix sinuatis. 

 Foem. major, multo crassior, prothoracis punctulis minutissimis inter- 

 mediis distinctis, tibiis simplicibus. — Long corp. lin. 2-2j. 

 Habitat Lanzarotam borealem, sub lapidibus in aridis \'ix supra 

 " Salinas " captus. 



The only four examples which I have yet seen of the present 

 insect were captured on the rocky ground at the base of the lofty 

 cliffs known as the " Risco," immediately behind the Salinas, in the 

 extreme north of Lanzarote. One of them was taken by Mr. Gray, 

 and the other three by myself. The species is remarkable, inter alia, 

 for the unusual dissimilarity of its sexes — the females being more 

 decidedly broader and intiated, as compared with the males, than is 

 the case in the generality of the Laparoceri hitherto detected. It 

 may be further recognized by its small size and brownish-piceous 

 hue ; by its surface being sparingly clouded with cinereous, or fulvo- 

 cinereous, scales, but destitute of erect hairs ; by its prothorax being- 

 very remotely, but rather deeply, punctured (and with, the minute^ 

 intermediate punctules obsolete in the male sex, but sufficiently con - 

 spicuous in the female) ; and by its antenntc, particularly of the 



