100 CANAEIAN COLEOPTERA. 



pimctures being more especially conspicuous about the middle of the 

 elytra), for its dehcately alutaccous head and prothorax, and for its 

 entire freedom from a sutural stria. From the A. marginatum of 

 more northern latitudes, with which it has a good deal in common, 

 it chiefly differs in being (on the average) rather smaller and darker, 

 less globose (or a little more acute at its hinder apex), in the mi- 

 nutely alutaceous sculpture of its head and prothorax, and in its an- 

 tennae being longer and slenderer, — the subclaval joints being monili- 

 form, instead of broad and transverse. It is decidedly rare, or at any 

 rate very local. I have taken it sparingly in the region of El Monte 

 in Grand Canary ; as also at the Agua Garcia, and (more especially) 

 in the woods above Taganana, of TeneriiFe. In the last of these 

 localities I once found it rather commonly — adhering to rotten sticks 

 in the dampest and thickest part of the forest. The specimens from 

 Grand Canary are a trifle less evidently punctulated than those from 

 TenerifFe, and their head and prothorax are (when viewed beneath 

 the microscope) scarcely perceptibly alutaceous ; but there is no other 

 difference in them, that I can detect. 



1G3. Agathidinm integricoUe, n. sp. 

 A. pra;cedenti fere simile, sed vix major; prothorace latiore, integro 

 (i. e. antice, pro capitis reecptione, haiid excavato), nitidiore (nee 

 alutaceo), in limbo distinctius pallidiore ; scutello majore ; elytris 

 sensim rotundatioribus, apicem versus minus acutis sed ibidem ni- 

 fescentioribus, ad humeros magis oblique defalcantibus, necnon 

 stria suturali (antice evanesccntc) in utroque conspicue impressis. 

 — Long. Corp. lin. li. 



Habitat Tenerrffam, a cl. W. D. Crotch nuper repertum. 



Were not its characters so well expressed, I should not have ven- 

 tured to define a new Agathidium from the single, imperfect example 

 from which the above diagnosis has been compiled. But since the 

 stnictiu'e of its prothorax and more oblique shoulders, as well as the 

 presence of a sutural stria on each elytron, remove it into a different 

 Section of the genus from that which contains the A, glohulum, I can- 

 not omit it from the present Catalogue. It was taken by Dr. Crotch, 

 diu'ing the spring of 1862, in Teneriffe (though he has no recollection 

 of the precise locality), and is, unfortunately, destitute both of its 

 head and limbs. Nevertheless there is no possibility of confounding 

 it with the A. glohulum, from which it may immediately be known 

 by its prothorax being wider, wnalutaceous (and therefore more 

 shining), more distinctly pallid at its margins, and entire in front 

 (or completely unscooped-out for the reception of the head) ; by its 



