TOMICID^E. 247 



principally at rather low elevations, but ascending likewise into the 

 intermediate districts. It often swarms under the dry, loosened 

 bark of old palings, and about cultivated grounds generally. I have 

 taken it in Madeira proper, as well as in all the seven islands of the 

 Canarian Group except Gomera whence however an extensive 

 series is now before me, which was captured by the Messrs. Crotch. 

 I do not feel entirely satisfied that the L. curium is specifically 

 distinct from the bituberculatum occasional specimens from the 

 intermediate regions so far uniting the two forms that it is difficult 

 to say for certain to which they should be referred. Still both of 

 them are on the whole so well defined that I think it is far from 

 impossible that some diagnostic character (for one or the other of 

 them) may have escaped my observation ; and therefore I will not, 

 particularly as they have already been established, venture to unite 

 them. Whether however the L. bituberculatum is indicated amongst 

 the Canarian examples now before me I consider somewhat doubtful, 

 and am rather inclined to refer the whole of the latter (even the 

 darker ones) to the curium. 



692. Liparthrum inarmatum. 



Leiparthrum inarmatum, Woll., Ann. Nat. Hist. v. 364 (1860). 

 Liparthrum , Id., Cat. Can. Col. 266 (1864). 



Habitat Maderenses (Mad.), et Canarienses (in Fuert. sola adhuc 

 haud observatum), ramulos Euphorbiarum emortuos erodens. 



Strictly a Euphorbia-infesting species, and one which in all pro- 

 bability is (like the L. curium) universal throughout these Atlantic 

 Groups, occurring in the dead stems and twigs of the Euphorbias, 

 principally at rather low elevations. It has been taken in Madeira 

 proper (to the westward of Funchal), and in all the seven Canarian 

 islands except Fuerteventura (where, however, there can be no doubt 

 that it must exist). Its capture in Hierro is due to the Messrs. 

 Crotch, who met with several specimens of it (now before me) in 

 that island during the summer of 1864. It varies considerably in 

 stature. 



693. Liparthrum artemisiae. 



Leiparthrum Artemisise, Wott., Ins. Mad. 299 (1854). 

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



Habitat Maderenses (Ilheo Chao) inter plantas Artemisice argentew, 

 Herit., sat copiose deprehensum. 



Found hitherto only on the northern Deserta (or Ilheo Chao), of 



