British Species of Horaalota. 165 



loBg, but slightly narrowed behind, impunctate, and with 

 a delicate pubescence. The elytra are about a third long- 

 er than the thorax, very obsoletely punctured. Abdo- 

 men pitchy-black, shining, almost impunctate, but with a 

 distinct pubescence. Legs dirty yellow. 



In the male, the upper and under plates of the seventh 

 segment of the abdomen are narrower than in the female, 

 and the under one is a little more produced. 



This species is rare, but I have found single specimens 

 in several localities. Brighton, Cambridge, Edinburgh, 

 London. 



Obs. — This species is readily distinguished from H. 

 splendens by its smaller size, darker colour, slenderer an- 

 tennae, &c. ; on account of its almost impunctate surface 

 it is readily distinguished from most others of the genus, 

 H. atomaria resembles it in this respect, but, to say no- 

 thing of other characters, is easily separated by its smaller 

 size. H. luctuosa, Muls., is extremely closely allied to H. 

 cegra, but I have not as yet seen a British example of it. 



Group IX. Very flat species. 



(Species 60 — 63). 



The three species with whose habits I am acquainted 

 are all found under bark. H. cribriceps is a most remark- 

 able insect, about which I can give no information ; its 

 colour is different from that of the other species, and 

 gives it some resemblance to H. boletobia. 



60. Homalota immersa. 



Depressa, nigra, antennarum basi tibiisque testaceis, 

 femoribus piceis; capite transverse, postice truncate; 

 thorace subquadrato, basin versus angustato ; abdomine 

 supra parce obsolete punctate. Long, -i lin. 



H. immersa, Er. Kaf. Brand, i. 324; Gen. et Spec. 

 Staph. 96; Kr. Ins. Deutsch. ii. 252; Wat. Cat. Dado- 

 bia planicollis, Th. Sk. Col. ii. 287. 



A very depressed species, readily known by the pecu- 

 liar shape of its head. Antennae pitchy, with the first and 

 second joints yellow, but little thickened towards the 

 apex; joint one longer than two, three shorter and more 

 slender than two, scarcely half as long as the first, four to 



