22 HETEROMERA. . [| Palorus. 
Under bark of oaks and elms ; not common; London; Birdbrook, Essex ; Hamp- 
shire ; Swansea ; Scarborough ; Northumberland and Durham district ; it sometimes 
occurs in flour, and Bold records it as taken in shops, and apparently introduced. 
HYPOPHLGUS, Hellwig. (Corticeus, Piller.) 
This genus, including Palorus, contains about thirty species ; of these 
about half oecur in Europe, and the remainder have been described from 
Northern Africa and the adjacent islands, North America, Ceylon, 
Brazil, &c.; the species belonging to the genus Hypophleus proper may be 
easily known by having the elytra truncate and the pygidium exposed ; 
the general form is elongate-oblong or subeylindrical ; the antenne have 
the last seven joints thickened, all but the last one being strongly 
transverse ; the last joint of the palpi is subovate, and the scutellum is 
transverse and truncate at apex. 
The larva of H. bicolor is described and figured by Schiédte (Le. p. 559, pl. x. 
fig. 8) ; it is rather broad, the length being only seven times greater than the breadth, 
smooth and shining, with fine and slender sete; it is gradually narrowed from a 
little before apex, and the apical segment is small and not furnished with processes ; 
the ocelli are two in number on each side, and are rather large and conspicuous ; the 
prothorax is a little broader than long, slightly narrowed in front, and very finely 
constricted before middle; the pairs of legs are of about equal length; its habitat is 
in dead trunks of oak, so that it differs very much in this respect from that of 
Palorus. 
I. Form elongate, subcylindrical ; thorax much longer than 
broad; elytra moderately strongly punctured in distinct 
rows, unicolorous castaneous . . «© « »« « « « s 
II. Form elongate-oblong, somewhat depressed; thorax 
only slightly longer than broad; elytra finely and more 
or less confusedly punctured, black, with the base broadly 
Ted com hy kewrchare: stall ayras wer cathe! wt semen) vo EeIBICOLOR OE 
H. cAsTANEUvS, F. 
H. castaneus, F. (cimeterius, Herbst.). Elongate, subcylindrical, 
shining, chestnut-brown, with the thorax often darker, almost black ; 
head thickly punctured ; antenne pitchy or ferruginous with the apex 
usually lighter ; thorax subrectangular, considerably longer than broad, 
distinetly and rather closely punctured ; elytra with fine punctured 
striz, interstices minutely punctured ; legs red. L. 4-55 mm. 
Male with the anterior tibia furnished with a large hooked spur; 
female with the anterior tibie slightly produced into a tooth at apex 
externally. 
Under bark of beech and elm; very local and not common; New Forest; Ply- 
mouth ; Sherwood Forest, where it has occurred in some numbers to Mr. Matthews, 
Mr. Blatch, Dr. Power, and others ; Dunham Park, Manchester. 
H. bicolor, Ol. A small but briglitly coloured and conspicuous 
species ; elongate-oblong, moderately convex, shining, of a testaceous red 
colour above, with the elytra except basal third black; under-side 
castaneous red, with the apex pitchy black; head subtriangular, finely 
punctured ; thorax subquadrate, closely and finely punctured ; elytra 
