CANARIAN COLEOrTEKA. 447 



in its legs being rather less slender, -with the two spines of their an- 

 terior tibiae, the apical one of which is considerably less curved, both 

 shorter and more obtuse. 



682. Arthrodes emarginatus, n. sp. 



A. species A. costifronti similis, et cum hoc structura tibiarum anti- 

 carum congruens, sed forsan paulo major obtusior ; capite protho- 

 raceque multo parcius punctulatis, illius carina frontali multo mi- 

 nus elevata ae paulo minus curvata, epistomate apice omnijio sim- 

 pliciter emarginato, hoc sensim latiore et omnino immarginato ; ely- 

 tris densius,fequaliter et minute asperato -punctulatis ; tibiarum an- 

 ticarum spinis elongatis, acutis, apicali cxirvata. — Long, corp, lin. 3. 



Habitat Fuerteventuram, semel tantum repertus. 



I have but a single example of this Arthrodes, caj)tured by myself 

 in Fuerteventura, to judge from ; but it appears to be exceedingly 

 distinct from both the subciUatics and costifrons, with which I believe 

 that it was taken in company. Indeed the structure of the teeth of 

 its anterior tibiae is precisely the same as in those sand-burrowing 

 species ; and its general aspect is very much that of the A. suhciliatus. 

 It is, however, a little larger and more obtuse ; its head and protho- 

 rax (the latter of which is not only perceptibly wider, but also en- 

 tirely immarginate) are much more sparingly punctulated ; its frontal 

 keel is considerably less elevated, and not quite so curved ; the emar- 

 gination of its epistome is unmistakeably simple ; and its elytra are 

 more closely and equaUy punctulated, the punctures moreover being 

 conspicuously asperate. 



683. Arthrodes geotrupoides, n. sp. 



A. prascedenti similis, sed multo major ; carina frontali minus elevatsx, 

 subobsoleta ; plica humcrali magis incrassata, subcurvata ; et spi- 

 nis tibiarum anticarum obtusioribus, minus productis, apicali mi- 

 nus curvata. — Long. corp. lin. 3|-5. 



Habitat Fuerteventuram, parum rarus. 



In its form, sculpture, and subopake surface, as well as in the 

 perfecfli/ simple emargination of its epistome, the present Arthrodes 

 is coincident with the last one ; and, like it, it was taken by myself, 

 though more abundantly, in Fuerteventura. It is, however, con- 

 siderabl}' larger ; its frontal keel is still less elevated, indeed almost 

 obsolete ; its humeral plica is thicker, and slightly arcuate ; and the 

 two teeth of its anterior tibiae are blunter and less produced, the 

 apical one moreover being less outwardly curved. This last character 

 indeed is perhaps the most significant of them all — implying, I think, 

 a rather different mode of life ; for the spines of the anterior tibiae 



