142 [June, 



Arbis, Konow. 



In Ardis the gen?p, thougli quite " distinct," are considerably 



shorter than in Pcriclista and 

 Pureopliom. The V saw-slieath 

 is produced into a hmg sliarp 

 " niucro," which is very unlike 

 , ^, . the blunt apex of Pareophora 



a. Jipex of savv-Bhcath in Avdu sulcata $ . ' 



6. ,, ,, ,, I'ericHsiamciaHoccpiiaia ^. or the li'iang'ular one of Pm- 



chut a. (8ec Ingure U). 

 Our two spi'cics, hipioiclatn, Kl., and sulcata, Cam., are both 

 black-bodied, and in both — but n)orc conspicuously in saJcata — tliere 

 is a peculiar impression or furrow on the head, followini,^ the posterior 

 margin of each eye. The prunotum and teguhc are black in sulcata, 

 partly pah^ in bipunctaia. The latter has also much njore white upon 

 the legs, and the 2nd cid)ital seems to be (gtMierally, at least) much 

 longer and not so high as compared with the 'Avtl, a character noticed 

 by Mr. Cameron in distinguishing Jjipuiictata from P. llnroJata. But 

 w'lu'ther it can always be relied upon to separate hijninctata from 

 sulcata 1 cannot say Avithout more material than lies before me. 



There is a lliird species of Ardis on tlie Continent, viz., plana, Kl. {=^sericans, 

 Hig.), in which the head is not furrowed beliind the ejes, and tlie body (especially 

 on llio ventral side and towards the apex of tlie abdomen) is clothed with a notice- 

 able, though fine, pubescence. Mr. Cameron describes in Vol. I a Blennocainpa 

 sericans as Britisli, and partieidarly mentions the latter character as distinguishing 

 it. But in Vol. IV he states that his sericans is a 3Ionophadiuis, and identical with 

 Klug's " eloiiffafa" {? elo>if/atu/a,Ti\.). Of the latter species I have only foreign 

 specimens, which have, as Klug says, " abdomen apice scriceo-micante " ; but the 

 cliaractcr is even more distinct in my specimens of "plana" (also foreigners). It 

 is very likely that the true ''^ plana =^ sericans " exists in this country ; but in the 

 absence of records I naturally cannot " list " it. 



We come now to the short-cheeked Blennocampides, and I com- 

 mence with the very distinct and uniform genus Tomostetlms, Knw., 

 consisting of short and sturdy-looking species, W'itli short stout 

 antenna", wliose fJrd joint occupies nearly a quarter of their entire 

 length, and exhibiting very strongly the character of " prjesterna 

 discreta" (Ent. Mo. Mag., May, 19U3, p. 115, Fig. 9), whence tlieir 

 generic name Tomosfetlius, i. e., " cloven-breasted." The furrow 

 which thus separates the " prassterna " from the rest of the breast 

 nnist not be confounded with the division between the pro- and 

 mesosternum which is to be found in all genera. It lies behind the 

 latter, and is a mere " depression," though a deep one, not a "fissure " 



