428 RHYNCHOPHORA. [ Hypothenemus. 
minute size, by the three-jointed funiculus of the antenne, which has 
the first joint very large and the second and third transverse and equal ; 
the club is very large, compressed and oval, showing traces of sutures ; 
the mentum is elongate and parallel-sided, and the apical declivity of 
the elytra is rounded, 
HH. eruditus, Westw. Very small, cylindrical, covered with fine 
white short erect hairs, black or pitchy-black, with the thorax reddish- 
yellow or brownish-yellow ; thorax about as long as broad, convex and 
plainly tuberculate in front, with the sides rounded and gradually nar- 
rowed at apex, subparallel behind ; elytra more than twice as long as 
thorax, with punctured striz, interstices finely rugose set with rows of 
very distinct white sete ; antenne and legs clear yellow or reddish- 
yellow. L. 3-*+ mm. 
In the cover of an old book; found in some numbers by Professor Westwood ; 
probably an introduced species. 
CRYPHALUS, Erichson. 
The members of this genus are very small and obscure dark-coloured 
insects and much resemble at first sight small species of Cis; they 
have been divided by Thomson and others into several separate genera ; 
in its wide sense the genus contains about two dozen species which are 
very widely distributed, representatives occurring in Europe, North and 
South America, Cuba, Guadeloupe, Madagascar, Australia, &c. ; the 
following are their chief characters: —Hyes entire or slightly emarginate ; 
antenne with sutures of the club distinctly marked, the club itself 
being somewhat variable in shape ; thorax tuberculate in front, margined 
at base ; scutellum small, punctiform ; elytra not strongly reflexed and 
not excavate at apex, clothed with scale-like pubescence and sometimes 
in addition with fine raised hairs; about twelve species are found in 
Europe and six have been recorded as British; they attack various 
trees (willow, lime, beech, fir, &c.) and are usually considered as very 
yare ; they appear, however, to have been found on several occasions in 
great abundance where they have occurred, and must probably be 
regarded as very local and as often passed over owing to their obscure 
appearance and habits; their life history has been described by 
Nordlinger (Nachtr. z. Ratz. Forst. p. 29), and by Dr, Algernon 
Chapman (Ent. Monthly Mag. v. 1868, pp. 198-9) ; Eichhoff has also 
described the life history of C. picew and C. abietis and figured their 
workings (Die Europaischen Borken Kifer, pp. 172 et seqq.); as very 
little is generally known of the habits of these beetles, and as an 
account of them may perhaps lead to further discoveries of their habitats, 
I have thought it advisable to quote Dr. Chapman’s remarks at length. 
«On some aspens growing near Abergavenny I have detected certain 
beetles, which are interesting not only on account of their rarity, but 
also on account of their habits. Last spring (i868) I observed that 
