369 



1012. Longitarsus circumseptus. 



Altica dorsalis, Bndle fnec Fab.'], in Webb et Berth. (Co/.) 74 (1838). 

 Longitarsus dorsalis, Woll. [nee Fab.~\, Journ. of EnL i. 8 (1860). 

 Teinodactyla circumsepta (Uen6), AIL, Ann. Soc. Ent. Fr., 105 (1860). 

 Longitarsus dorsalis, WolL, Cat. Can. Col. 413 (1864). 



Habitat Canarienses (Lanz.), in graminosis intermediis, praesertim ad 

 folia Senecionis crassifolii, Wilden., occurrens. 



A species which is recorded by M. Allard from Sardinia and Algeria, 

 and one which occurs sparingly in the Canarian Group having been 

 taken by Mr. Gray and myself (during January 1858) around Haria 

 in the north of Lanzarote, and again by myself in the same district 

 during March of 1859. It seems very partial to the foliage of the 

 Senecio crassifolius, Wilden. 



Hitherto I have referred this Longitarsus to the ordinary European 

 L. dorsalis ; but a recent comparison of it with types of that insect 

 and of the circumseptus, which have been communicated by M. Allard, 

 has convinced me that it is better identified with the latter which 

 moreover is peculiarly a Mediterranean species, whereas the dorsalis 

 is found not only in Mediterranean latitudes but likewise throughout 

 central Europe. The Canarian examples however differ from the 

 Algerian one now before me in having their prothorax testaceous 

 instead of black ; but as they agree with it in every other particular, 

 I feel satisfied that this peculiarity is merely a geographical one and 

 is totally insufficient to indicate a distinct species*. 



1013. Longitarsus strigicollis. 



Longitarsus strigicollis, WolL, Cat. Can. Col. 412 (1864). 

 Habitat Canarienses (Ten.}, a W. D. Crotch semel captus. 



The only specimen which I have seen of this insignificant Longi- 

 tarsus was taken by Dr. Crotch in Teneriffe, during his first Canarian 

 expedition (in 1862). 



1014. Longitarsus nubigena. 



Longitarsus nubigena, Woll., Ins. Mad. 447 (1854). 

 , Id., Cat. Mad. Col. 133 (1857). 



* The L. circumseptus seems to differ from the dorsalis, mainly, in being a 

 little smaller and more shining, with its limbs (except the hinder femora) pale, 

 its antennae longer, its eyes a trifle smaller, and its elytra somewhat convexer, 

 more distinctly punctulated, and less rounded off separately at their apex. In 

 their testaceous prothorax, however, the Lanzarotan examples agree with the 

 dorsalis ; and I would therefore acknowledge this slight insular modification of 

 the circumseptus by recording it as the " var. /3. pallidicollis" 



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