NEW BRITISH SPECIES, ETC., IN 1863. 65 



38. Omalium nigrum, Grav. Mon. 212, 17; Erichs Gen. 



et Spec. Staph. 880, 11; Ktz. Ins. Deiitschl. ii. 997, 

 28 ; Rev. A. Matthews, Zool. 8650 (1863). 



salicinum, Gyll. 



atrum, Heer. 

 Mr. Matthews brings forward this species on the authority 

 of an example taken by himself in Oxfordshire. It is closely 

 allied to O.jiorale (which it must immediately follow in our 

 lists), and differs from that insect in the following points : 

 it is rather less, the antennae are longer, with the first five 

 joints red and the remainder black ; the thorax is rather 

 shorter and more narrowed in front, with the sides more 

 widely margined, and the margins pitchy; the scutellum is 

 sparingly and delicately punctured, and the elytra are rather 

 longer, with the punctuation more generally inclined to run 

 in striae, 



39. Hydnobius strigosus, Schmidt, in Germ. Zeits. Hi. 



198,3; Er. Ins. Deutschl. 49, 3; Thorns. Skand. 

 Col. iv. 29, 3; Wat. (Pocket) Cat. Brit. Col. 1861. 



Mr. Waterhouse introduced this species from his ow^n 

 collection. I have also taken it by sweeping at Hammer- 

 smith marshes in last July, and it is in the collections of Dr. 

 Power and others. It is an oblong, rather convex, shining, 

 brunneo-testaceous insect, varying in length from half to 

 two-thirds of a fine, with the thorax delicately punctured, 

 and the elytra faintly panctate-striate, the interstices being 

 obliquely scratched, the scratches composed of very minute 

 punctuations, gathered closely together in rather irregular 

 series. The male has the posterior femora armed wath a 

 short, sharp tooth on the under side, just before the apex. 



It may possibly be mixed up in collections with Culenis 

 dentipes, from which it can, however, be at once distinguitshed 



1864. F 



