448 Mr. T. Y. Wollaston on the Canarian Malacoderms. 



sexu masculo sensim longioribus et crassioribus ; tibiis paulo magia 



infuscatis. 

 Long. corp. lin. lf-2|. 

 Habitat ins. Ilierro, in regione " El Golfo," parce captus. 



As will be gathered from the diagnosis, this Haplocnemus differs 

 from the preceding one (which at first sight it much resembles) in 

 being densely beset all over (in addition to the decumbent under- 

 pile of its head and prothorax) with very long, fine, and erect hairs, 

 of which there is no indication whatsoever in the II. sailjituratus. 

 Its elytra are perhaps a trifle less deeply punctured ; and the 

 antenna) of its male sex are somewhat longer and thicker. Hitherto 

 I have observed it only in Hierro, where, during February 1858, I 

 captured five specimens of it in the sylvan district of El Golfo, on 

 the western side of the island. 



Genus Helyrosoma. 

 Wollaston, Ins. Mad. 253, tab. v. f. 1, 2 (1854). 



28. Melyrosoma costipenne, n. sp. 



M. atrnm, pilis brevibus demissis nigris vestitum ; capite prothoraceque 

 profunde et deusissime rugoso-punctatis, hoc subconico, vix canaliculato 

 sed postice in medio foveola impresso ; elytris valde profunde rugoso- 

 punctatis, sutura costisque tribus in utroque fortiter elevatis ; antennis 

 ad basin vix picescentioribus. 



Mas paulo minus gracilius, antennis brevioribus. 



Long, corp. lin. l±-2. 



Habitat in montibus Canarise Grandis, ad flores (praesertim Cytisornm et 

 Cistorum) in pineto quodam excelso TarajanaB mense Aprili, a.d. 1858, 

 repertum. 



The intensely black hue of this Melyrosoma, combined with its 

 short, robust, and decumbent pile, its subconical prothorax, and the 

 three very elevated costae with which each of its elytra is furnished, 

 will sufficiently characterize it. It is allied to the Madeiran M. 

 oceanicum, but is rather larger and of a deeper black, its pubescence 

 also is darker and more decumbent, its prothorax is less abbreviated 

 and more conical, its elytral ridges are more distinct, its entire 

 scidpture is denser and coarser, and its antennae and palpi are a little 

 more elongated. Like that insect, it is strictly a mountain species ; 

 and the only region in which I have hitherto observed it is the lofty 

 Pinal of Tarajana, above San Bartolome, in the centre of Grand 

 Canary, where, during April 1858, 1 took it, not uncommonly, about 

 the flowers of the Cytisi and Cisti. 



