ERODIAD.E. 389 



same consignment includes insects similarly labelled which without 

 doubt were never taken in Teneriffe at all, I can place no reliance 

 whatever on its professed habitat. 



1070. Arthrodes curtus. 



Erodius curtus, Bridle, in Webb et Berth. (Col.) 63, pi. i. f. 7 (1838). 

 Arthrodes curtus, WolL, Cat. Can. Col 439 (1864). 



Habitat Canarienses (Can.), in montibus hinc inde vnlgaris. 



Found on the mountains of Grand Canary, principally at a rather 

 high elevation, where it is locally abundant ; but I did not observe 

 it in the lower districts. 



c. Epipleurce plica humeralis brevissima. 



1071. Arthrodes obesus. 



Erodius obesus, Smile, in Webb et Berth. (Col.) 63 (1838). 

 Arthrodes obesus, WolL, Cat. Can. Col. 440 (1864). 



Habitat Canarienses (Can., Ten., Palma, Hierro), praecipue in infe- 

 rioribus, passim. 



An Arthrodes which appears to be more widely spread over the 

 Canarian Group than any of the others yet detected ; though since 

 it is just possible that my "var. ft. simillima" (from Palma and 

 Hierro) and the " var. y. crassa " (from Grand Canary) may, either 

 of them, prove to be specifically distinct, further material is perhaps 

 required before this can be affirmed for certain. Still I have little 

 doubt that the slight aberrations just referred to are mere unimpor- 

 tant insular states of a rather variable species the type of which I 

 have assumed to be from Teneriffe, through the simple fact that the 

 particular modification which there obtains appeared best to accord 

 with the individual described by M. Brulle. Assuming therefore 

 that the little differences of punctation, and even in the development 

 of the humeral costa, are but topographical ones, the A. obesus may 

 be said to occur sparingly, for the most part at low (but sometimes 

 at intermediate) elevations, in Grand Canary, Teneriffe, Palma, and 

 Hierro. Its detection in Grand Canary is due to the late researches 

 of the Messrs. Crotch, who obtained three examples of it near Las 

 Palmas*. 



* These three specimens from Grand Canary differ from at all events two 

 Palman ones now before me (and, I think, likewise from the Teneriifan type) in 

 being somewhat more distinctly punctulated, with their shoulders a trifle rounder 



