CANARIAN COLEOPTERA. 439 



§ I. Epistoma aiiice plus minus evidenter tridentatum. 

 a. Ejiiphurce pJka humercdis ohsoleta. 



670. Arthrodes inflatus, n. sp. 



A. ater, convexissimus, subopacus ; capite prothoraeeque subtiliter 

 et parce punctulatis, illius carina frontali areuata distinctri, hoc ad 



. latera subrotundato et vix marginato ; elytris subtilissime et parce 

 granulatis, leviter subreticulato-malleatis, epiplouris valdc rotun- 

 dato-obtusis ; pedibus brevibus, tarsis brevibus et una cum antennis 

 nigro-piceis. — Long. corp. lin. 5-5|. 



Habitat in insuM parva " Graciosa," juxta Lanzarotam borealeni 

 sita, d. 11. Mart. a.d. 1859 deprehensus. 



The excessively convex and inflated body of this Arthrodes, which 

 has its head and prothorax minutely and rather sparingly puuctulated, 

 whilst its elytra (which are slightly malleated) are beset with ex- 

 tremely diminutive, almost imperceptible granides, combined with its 

 somewhat laterally rounded and very obscurely margined prothorax 

 and its shortish limbs and feet, will sufiiciently distinguish it. Its 

 epipleuroD are greatly rounded and obtuse, and the humeral plica at 

 their base is obsolete — a structure which causes the shoulders to ap- 

 pear a little drawn or nipped in, so that the base of the prothorax 

 rather exceeds in width the base of the elytra. The only specimens 

 which I have taken (five in number) were captured in the little island 

 of Graciosa, off the extreme north of Lanzarote, on the 11th of March 



1859. 



671. Arthrodes curtus. 



A. antice subangustior, subnitidus (interdum subopacus), subtUissime 

 et parcissime punctulatus ; carina frontali areuata, distincta ; pro- 

 thorace ad latera et antice sat grosse marginato ; elytris ina^qua- 

 libus, i. e. plus minus mallcatis necnon plus minus distincte longi- 

 tudinaliter interrupte sulcatis ; pedibus elongatis. — Long. corp. lin. 

 5-6. 



Erodius cm-tiis, BrulU, in Webb et Berth. {Col.) 63. pi. i. f. 7 (1838). 

 Habitat in montibus Canaria) Grandis, hinc inde vulgaris. 

 A most distinct species, which I have observed hitherto only in 

 Grand Canary. It may readily be known by its large size and elon- 

 gate legs, and by its elytra being usually extremely xineven and more 

 or less evidently (though irregidarly and interruptedly) longitudinally 

 sulcate. This last character, however, is subject to considerable 

 variation, according to the district in which the insect is foimd. And 

 it is further remarkable for its outline being comparatively (though 

 but slightly) narrowed anteriorly, for its surface being usually more 

 shining than is the case in the other species here eniimcrated, and 



