Priobium.]} SERRICORNIA, 189 
PRIOBIUM, Motschulsky. (Grynobius, Thomson.) 
Three species belonging to this genus have been described, all of 
which oceur in Europe ; they closely resemble Anobium, but may be 
known by having the thorax not margined at sides, and the last three 
joints of the antennz less elongate. 
P. castaneum, IF. (tomenioswm, Muls.). Oblong, subcylindrieal, 
of a dull fuscous-brown or reddish-brown colour, clothed with short 
yellowish pubescence, antenne and legs red; head rather large, with 
eyes prominent, antenne short, with the first and second joints 
enlarged, and the last three forming an elongate club, which is longer in 
the male than in the female; thorax broader than long, considerably 
narrower than elytra, with the sides rounded and not margined, con- 
tracted in front, with a more or less distinct longitudinal central furrow ; 
upper surface very thickly and finely and rugosely punctured ; scutellum 
round, rather prominent, strongly pubescent ; elytra parallel-sided, more 
rounded at apex in the female than in the male, with very strong 
crenate punctured strie, and the interstices finely but plainly 
punctured; legs moderately robust, with the tarsi rather broad. L. 
4—5 mm. 
In dead hedges, old posts, &c.; rather common, and apparently generally distri- 
buted throughout the greater part of England and Wales, but rarer further north ; 
Scotland, rare, on trunks of trees, Tweed, Forth, Tay, and Moray districts ; Ireland, 
Armagh and near Dublin, and probably generally distributed. 
ANOBIUM, Fabricius. (Byrrhus, Geoffroy.) 
This genus contains more than fifty species, of which about half are 
found in Europe; the remainder have been described from North 
America, Mexico, Chili, South Africa, Madeira, Ceylon, and New 
Zealand ; they may be known by their subcylindrical form, margined 
thorax, regularly striated elytra, and strongly deflexed head, and also by 
having the last three joints of the antenne elongate, but evidently 
broader than the preceding; four species occur in Britain, which may 
be distinguished as follows :— 
I, Eyes not hairy ; antenn with the second joint about 
equal in length to third. 
i, Anterior part of metasternum excavated to receive 
antenne. 
1, Thorax with a large patch of yellowish pubescence 
on each side near posterior angles, which are 
right angles; alternate interstices of elytra dis- 
tinctly raised at base; sizelarger . . . . . . A. DENTICOLLE, Panz. 
2. Thorax with at most a small indistinct patch of 
greyish pubescence on each side near posterior 
angles, which are obtuse; alternate interstices 
of elytra not or scarcely raised ; size smaller . . A, DOMESTICUM, Fourc, 
