CANARIAN COLEOPTERA. 487 



utrinque explanato, ad latera rotundato sed antiee stepius paulo 

 latiore, angulis anticis obtusiiisculis ; elytris punctato-striatis ; 

 antennis tarsisque breviiisculis. — Long. corp. lin. 3^-4^. 



Habitat Lanzarotam et Fuerteventuram, sub lapidibus in aridis 

 degens. 



This is the common Opatrum of Lanzarote and Fuerteventura, 

 where it occurs beneath stones in arid spots at low and intermediate 

 elevations ; but I have not observed it in any of the other islands of 

 the Group. It is closely allied to the 0. fuscum, but is on the ave- 

 rage a trifle larger and more obtuse anteriorly, and usually more 

 densely covered with reddish-brown mud-like scales. Its prothorax 

 is just perceptibly wider in front, with the anterior angles less acute, 

 and more broadly flattened at the sides ; and its antennae and tarsi 

 are, if anything, a little shorter. Its main difference, however, con- 

 sists in the development of its gence, which are both more prominent 

 and more anguliform, in front of either eye. This character is not 

 only a constant one but likewise conspicuous, the distance from the 

 eye to the apex of the gena being appreciably greater than it is in 

 the 0. fuscum. 



731. Opatrum fuscum. 



0. subparallelo-oblongum, griseo-pubescens et -squamosum ; genis 

 ante oculos minus exstantibus, rotundato-anguJatis ; prothorace 

 granulato et subtilissime ruguloso, utrinque minus explanato, ad 

 latera sequaliter rotundato, angulis anticis acutiusculis ; elytris 

 punctato-striatis ; antennis tai'sisque sensim longioribus, — Long. 

 Corp. lin. 3-4. 



Opatrum fuscum, Hbst, Kiif. v. 225. tab. 52. f. 1 (1793). 



fuscum, BrulU, in Webb et Berth. (Col.) 68 (1838). 



rusticum, 3Iuk., Col. de France (Latig.) 171 (1854). 



errans, WolL, Ins. Mad. 501. tab. xi. f. 3 (1854). 



, Id., Cat. Mad. Col. 156 (1857). 



fuscum, Hartung, Oeolog. Verhdltn. Lanz. und Fuert. 140. 



Habitat in Lanzarota, Fuerteventura, Canaria et Teneriffa, praeser- 

 tim in aridis sed longe lateque diffusum. 



The 0. fuscum of Mediterranean latitudes is widely spread at the 

 Canaries, where in all probability it is universal — though hitherto it 

 has been observed only in Lanzarote, Fuerteventura, Grand Canary, 

 and Teneriff'e. It is, on the average, a trifle smaller than the last 

 species, and has its antennae and feet just perceptibly longer ; and it 

 is also, for the most part, less densely clothed with mud-like scales. 

 Its gena; (or lateral edges of the clypeus) are neither so prominent 

 nor so angular — the distance being perceptibly less from either eye 

 to their tip (which is itself a little more obtuse); and its prothorax 



