APPENDIX. 59 



Dora. H. de la Perraudiere collectus, cujus in honorem nomen 

 triviale dedi. 



A single example of this Arthrodes has been communicated by M. 

 de Marseul, and was taken at the Canaries by M. H. de la Perraudiere ; 

 but I have no reliable information as to the exact island in which it 

 was found. In its humeral plica being altogether absent (and not 

 even obsolete, as in the A. inflatus and curtus) it recedes from the 

 members of the genus hitherto detected ; and it is further remarkable 

 for its head and prothorax being nearly impunctate, whilst its elytra 

 (which are almost even, being but minutely and slightly malleated) 

 are rather densely and distinctly punctured. Its frontal keel is 

 regularly arcuated, and much developed ; and the lateral edges of its 

 prothorax (as well as a portion of the front one towards either side) 

 are rather coarsely margined. 



Fam. CONIONTIRE. 



Genus CRYPTICUS. 

 LatreiUe, Eegn. An. (edit. 1) iii. 298 (1817). 



Crypticus calvus, n. sp. 



C. punctatissimo similis et forsan ejus status insularis ; differt corpore 

 vix oblongiore depressiore et omnino calvo (neque etiam minute pu- 

 bescente), punctura vix subtiliore minusque densa, prothorace 

 paulo minus convexo necnon ad angulos posticos sensim minus 

 producto, elytrorum striis vix levioribus. Long. corp. lin. 3|-4. 



Crypticus canariensis (p.), Woll, Cat. Can. Col. 482 (1864). 

 Habitat ins. Hierro, in sylvaticis occurrens. 



A single specimen of a Crypticus which I recorded in my late 

 Catalogue as an insular modification of the canariensis, and which 

 was captured by myself in the wooded district of El Golfo on the 

 western side of Hierro, seems better treated as a separate species 

 of which a long array of examples now before me, taken by the 

 Messrs. Crotch in the same island, appear to be the exponents. I 

 think, indeed, judging from this additional material, that it is cer- 

 tainly more allied to the punctatissimus than to the canariensis ; and 

 it was the mere fact of its being free from pubescence that inclined 

 me to regard it as a state of the latter. But, in point of fact, it is 

 so near to the former that I am far from satisfied that it may not, 

 in reality, be but a totally bald variety of that insect, peculiar to 



