242 



TOMICID.E. 



characters of occasional individuals from these four different islands 

 are so similar that I am convinced it would be worse than useless to 

 define as separate species what further material would tend only to 

 reunite. 



I have taken the normal form of the A. bicinctum abundantly i 

 the rotten Euphorbias of Lanzarote and Fuerteventura, and the 

 states " (3 " and " y " sparingly in Grand Canary and Teneriffe. 

 These two latter phases were found more commonly by the Messrs. 

 Crotch, the " y " (or Teneriffan one) indeed in the utmost pro- 

 fusion, within the stems of felled Euphorbias at Souzal ; and it was 

 likewise met with by Mr. Gray in the Barranco do Passo Alto, near 

 S ta Cruz. 



679. Aphanarthrum piscatorium. 



Aphanarthrum piscatorium, WolL, Ann. Nat. Hist. v. 166 (1860). 

 , Id., Cat. Can. Col. 260 (1864). 





Habitat Maderenses (Mad.} et Canarienses (Ten., Gom., Palma, 

 Hierro), ramos Euphorbiarum emortuos prsesertim E. piscatorice 

 erodens. 



A small species which is widely spread over these Atlantic islands, 

 where probably it will be found to occur wherever there are plants 

 of the Euphorbia piscatoria to which it seems principally to be 

 attached. It is common, at rather low elevations, in Madeira proper ; 

 whilst at the Canaries it has been taken abundantly in Teneriffe, 

 Gomera, Palma, and Hierro. 



680. Aphanarthrum euphorbiae. 



Aphanarthrum Euphorbise, WolL, Ins. Mad. 293. tab. vi. f. 2 (1854). 

 , Id., Cat. Mad. Col. 97 (1857). 



Habitat Maderenses (Mad.}, sub cortice necnon in ligno putrido 

 Euphorbice melliferce, Linn, fil., in locis editioribus occurrens. 



A Madeiran species, which has been captured hitherto only in the 

 higher regions of Madeira proper where it occurs beneath the bark 

 (and within the damp rotting wood) of the gigantic Euphorbia mel- 

 lifera, ascending to at least 5000 feet above the sea. 



681. Aplianarthrum affine. 



Aphanarthrum affine, WolL, Ann. Nat. Hist. v. 166 (1860). 

 , Id., Cat. Can. Col. 259 (1864). 



Habitat Canarienses (Lanz., Fuert., Can., Gom.), inter Euphorbias 

 antiquas hinc inde vulgare. 



