392 



ERODIAD.E. 



subciliatus, but the several points in which it permanently differs 

 have been fully alluded to in my Canarian Catalogue. It has been 

 taken abundantly, both by myself and the Messrs. Crotch, in the 

 low sandy submaritime district of Grand Canary between Las Palmas 

 and the Isleta *. 



b. Epipleurce plica humeralis distincta sed vix ad medium ducta. 



1079. Arthrodes costifrons. 



Arthrodes costifrons, Wott., Cat. Can. Col 445 (1864). 

 Habitat Canarienses (Lanz., Fuert.), in aridis arenosis fodiens. 



Observed hitherto only in the eastern islands of the Canarian 

 Group, Lanzarote and Fuerteventura, where it appears to have 

 much the same habits as the last two species burrowing into the 

 dry, loose sand in submaritime spots. 



1080. Arthrodes malleatus. 



Arthrodes malleatus, Woll, Cat. Can. Col 446 (1864). 

 Habitat Canarienses (Lanz.), sub lapidibus minus frequens. 



Found apparently in the intermediate districts of Lanzarote, though 

 occasionally in the lower ones also ; for I took a single example of 

 it in the little island of Graciosa (off the north of Lanzarote), at but 

 a short distance from the sea. It was captured sparingly by Mr. 

 Gray and myself between Haria and the Bisco. 



1081. Arthrodes emarginatus. 



Arthrodes emarginatus, Woll, Cat. Can. Col 447 (1864). 

 Habitat Canarienses (Fuert.), semel tantum repertus. 



A single example of this Canarian Arthrodes, taken by myself in 

 Fuerteventura, is all that I have yet seen. Although apparently 

 distinct from everything else here enumerated, it is evident that 

 further material is required in order to complete our knowledge of 

 the species. 



* The A. subcostatus seems to differ from the subciliatus, principally, in having 

 its punctation altogether a little denser, but with two or three obscure, irregular, 

 ill-defined lines down each of its elytra (as well as a small rounded space on 

 either side of its prothoracic disk) which are comparatively glabrous or free from 

 sculpture, in its prothorax being quite immarginate along the anterior edge, and 

 in its antennae being usually a trifle shorter. 



