244 



TOMICID^E. 



685. Aphanarthrum pusillum. 



Aphanarthrum pusillum, Woll., Ann. Nat. Hist. v. 167 (1860). 

 , Id., Cat. Can. Col. 263 (1864). 



Habitat Canarienses (Can., Ten., Gom.), plantas Eupliorbice canari- 

 ensis putridas destruens. 



This minute and uniformly dark-brown species is widely diffused 

 over the Canarian Group, where it is attached to the putrid stalks 

 of the Euphorbia canariensis. I have taken it in Grand Canary, 

 Teneriffe, and Gomera, in the last two of which it was found also by 

 the Messrs. Crotch. 





Genus 215. CRYPTURGITS. 



Erichson, in Wiec/m. Archiv, ii. 60 (1836). 



686. Crypturgus concolor. 

 Aphanarthrum concolor, Woll., Cat. Can. Col. 263 (1864). 



Habitat Canarienses (Ten., Palma, Hierro), sub cortice Pini canari- 

 ensis latens. 





A minute Canarian wood-borer, which occurs under the rotten 

 bark of the Pinus canariensis. I have taken it in Teneriffe and 

 Palma in the former of which islands it was captured also by the 

 Messrs. Crotch, who likewise met with it in the Final in the south 

 of Hierro. 



In my Canarian Catalogue I referred this insect to the genus 

 Aphanarthrum though with considerable reluctance, seeing that in 

 its external fades and pine-destroying habits it is totally opposed to 

 the members of that exclusively Euphorbia-infesting group ; and it 

 is therefore with some satisfaction that a more recent and critical 

 inquiry into its structural peculiarities has convinced me that it 

 belongs, without doubt, to the European genus Crypturgus with 

 which in the exact number and proportions of its antennal joints, 

 and its perfectly solid (unannulated) club, it agrees entirely. Indeed 

 it closely resembles the C. pusillus of more northern latitudes 

 from which it would seem to differ merely in being a trifle larger 

 and more pubescent, with the spines on the outer edge of its tibiae 

 more elongated and developed. The minute punctules also of its 

 elytral interstices will be seen, beneath the microscope, to be both 

 somewhat more regular and more numerous ; but as none of these 

 characters are important ones, I think it far from unlikely that it 

 may be in reality but a geographical modification of its European 

 ally. 



