CANARIAN COLEOPTERA. 145 



described from, which I captured beneath vegetable refuse near Haria, 

 in the north of Lanzarote, agrees precisely with a type of the H. cav- 

 larimi communicated to me some time ago by Dr. Aube. 



246. Holoparamecus niger. 



Calyptobium nigrum, Chevrier, in litt. 



, Aube, Ann. de la Soc. Ent. de France, (Qifeme serie) i. 24(> 



(1843). 

 Holoparamecus niger, Woll., Itis. Mad. 182 (1854). 

 , Id., Cat. Mad. Col. 64 (1857). 



Habitat Teneriffam : duo specimina, tempore vernali a.d. 1862, 

 cepit Dom. Crotch. 



Of the ff. niger, which is universal throughout Madeira and Porto 

 Santo, I have seen as yet but two Canarian examples. They were 

 taken by Dr. Crotch in Teneriffe, during the spring of 1862. The 

 characters which distinguish the species from the H. caularum have 

 already been indicated. When viewed beneath a high magnifying 

 power, the Canarian specimens of this insect (judging from the 

 pair now before me) wiU be perceived to be a trifle more glabrous 

 than the Madeiran ones (the excessively minute pubescence being, if 

 possible, even stiU less traceable) ; also their elytra are a Kttle less 

 expanded before the middle, which causes the shoulders to appear 

 somewhat less obliqiiely rounded-off : but I am satisfied that these 

 very slight differences cannot be indicative, at the utmost, of more 

 than an unimportant topographical state. 



§ II. Antenna; 9- et 10-articulatce. 



247. Holoparamecus singularis. 



II. subdepressus, rufo-testaceus, subnitidus, snbtiliter et minus parcc 

 pubescens ; oculis minutissimis ; prothorace antice latiuseulo, pos- 

 tice angiistiore sed hand constricto, angulis posticis subobtusis, basi 

 in medio anguste et minus fortiter transverse signato (impressione 

 subluniformi) ; elytris paulo distinctius punctulatis, stria suturali 

 rectfi in singulis impressa. — Long. corp. lin. i. 



Silvanus singularis, Beck, Bntr. zur Baierisch. Itisectenf. (1817). 

 Amphibolouarzron difficile, Villu, Cat. Col. Eur. 26 (1833). 

 Holoparamecus depressus, Curt., Ent. Mag. i. 186 (1833). 



, Id., Brit. Ent. xiii. 614 (1836). 



Calvptobiura Villa?, Aube, Ann. de la Soc. Ent. de France, (2ifenie serie) 

 i.*^ 243. pi. X. f. 1(1843). 



Habitat Lanzarotam, in eodem loco ac prajcedens semel captus. 



As may be gathered from the diagnosis, the excessively minute eyes 

 and rather more pubescent, depressed, and less shining surface of this 

 insect, in conjunction with its somewhat less anteriorly-widened and 



L 



