170 SBRRICORNIA. [ Tarsostenvs. 



tion ; one species alone, however, is found in Europe ; it appears 

 chiefly to differ from Opilo in the finer granulation of the eyes, and the 

 formation of the tarsi, but is hardly distinct from this genus. 



T. univittatua, Rossi (Opilus fasciatus, Steph.). Elongate, black 

 or fuscous black, villose, shining, with a transverse whitish or whitish- 

 yellow fascia on each elytron not reaching suture ; antennae ferruginous, 

 fuscous towards apex ; head thickly punctured ; thorax longer than 

 broad, narrower than elytra, coarsely and sparingly punctured, but 

 smooth on central line which is more or less furrowed; scutellum finely 

 punctured; elytra long, very coarsely punctured, with the punctures 

 almost confluent in places; legs ferruginous with the base of the 

 femora black. L. 5-6 mm. 



On flowers, Ac. ; very rare ; two specimens were recorded by Stephens and Curtis 

 as taken by Mr. Sbillingford in the woods near Winchmore Hill, Kent, and it has 

 occurred much more recently on the Cotswold Hills, Gloucestershire ; it seems, how- 

 ever, to be a question whether it can really be considered to be truly indigenous. 



THANASX9KUS, Latreille. (Clerus, auct.; Cleroides, Schafier.) 



There appears to bo at present considerable confusion as to the 

 nomenclature of the genus Clems ; in the catalogue of Hey len, Reitter, 

 and Weise the name is applied to Trichodes, Herbst. ; wh le Cleroides, 

 Schiiffer, includes Pseudoclerus, Duv., Pseudoclerops, Duv., TJianasimua, 

 Latr. (containing two species, T. formicarius and T. rufipes), and 

 Allonyx, Duv. Curtis and Stephens both include T. formicarius under 

 Thanasimus rather than under Clerus, but in all our modern catalogues 

 it has been referred to the latter genus; there appears to b$ but little 

 real difference between the two genera, and by some au liors (e.g. 

 Kiesenwetter, Naturgesichte der Insect. Deutsch. iv. p.683) they appear 

 to be regarded as synonymous ; in Clerus, however, the posterior t rsi 

 are rather broadly dilated, whereas in Thanasimus they are slender and 

 longer ; they are rather extensive genera, and of almost universal dis- 

 tribution in warm and tropical countries; the larva of T. formicarius 

 is described by Ratzeburg, Forst. Insecten, pi. i. f. 17), and, together 

 with the pupa, is figured by Westwood (Classification, i. p. 262, fig. 29, 

 15); it is of a dark pink colour, with a pitchy head and prothorax, 

 and two pitchy spots on the meso- and metathorax ; it feeds on wood- 

 feeding larvae ; the pupa, like the larva, is hairy, and is terminated at 

 apex by two comparatively long cerci. 



T. formicarius, L. (Clerus formicarius, auct.). Elongate, de- 

 pressed, anterior parts clothed with long pilose hairs ; head large, 

 black, coarsely punctured, eyes finely granulate, antennae black, last 

 joint with the apex ferruginous ; thorax about as long as broad, red, 

 with the anterior portion (which is divided by a broad V-shaped 

 furrow from the posterior portion) black, coarsely punctured, posterior 



