188 CLAVICORNIA. [Teredus. 



behind, with very finely punctured striae, and the interstices furnished 

 with very fine rows of punctures ; legs red. L. 3|-4 mm. 



Under bark of oak, &c., and in decaying stumps ; very rare j Sherwood Forest. 

 Mr. Blatch has lately taken several specimens in the old locality. 



OXYXiJEBXUS, Eiichson. 



This genus contains two European species and one from North 

 America ; they occur under bark of trees, often in company with ants, 

 and are of very rare occurrence. 



I. Thorax rather closely, although strongly punctured, 

 with four impressions at base, of which the two outer 

 ones reach scarcely one-third of the length of the 



thorax 0. OYLINDBICtTS, Panz. 



II. Thorax very coarsely and not thickly punctured, 

 with four impressions at base, of which the two outer 



ones reach as far as the middle of thorax . . . . O. VARIOLOSUS, Dvft. 



O. cylindricus, Panz. Elongate, cylindrical, shining reddish- 

 brown, thinly clothed with short upright hairs ; head sparingly and 

 deeply punctured ; antennas rather short, with solid club ; thorax a little 

 narrower than elytra, scarcely narrowed at base, upper surface coarsely 

 and deeply and rather thickly punctured, with two small deep furrows 

 above scutellum, and a longer triangular impression on each side ; elytra 

 parallel, with eight rows of punctures, all strong and deep, except those 

 of the seventh row which are fine ; legs stout, tibiae dilated at apex. 

 L. 3 mm. 



Under bark of oak j rare; New Forest, Lyndlmrst, &c. (E. Sheppard and others). 



O. variolosus, Duft. (ccesus, Er.) Very like the preceding, but 

 somewhat broader and less cylindrical, with the thorax more sparingly 

 and less thickly punctured, and with the outer basal impression reaching 

 as far as middle ; the punctures of the striae of elytra are all large and 

 deep, and the under-side of the thorax is more strongly punctured. 

 L. 3 mm. 



Under bark, by sweeping, &c. ; very rare ; first taken at Colney Hatch, Middlesex, 

 by Mr. Dossetor in 1850, and afterwards by Mr. Pelerin in 1854 at Charltou, Kent. 

 Dr. Power has captured it at Mickleham and Claygate, and also at Holm Bush, 

 Brighton ; it is very rare on the continent, where it was first taken by M. Dufour in 

 a high mountainous district under bark of oak, and afterwards by Herr Gressner in 

 Saxony in company with Formica fuliginosa. 



SYNCHITINA. 



A few small European genera are contained in this tribe, of which six 

 are found in Britain ; these may be separated as follows : 



I. Antenna} very stout without distinct club at apex, but 



forming a fusiform club almost from base .... OBTHOCERUS, Lair. 



(Sarrolrium, 111.) 





