514 INSECTA. 



BOSTRICHUS. 

 In 



Bostrichus, Geoff. Jlpate, Synodendron, Fab. Bermestes, Lin. 



Or Bostrichus proper, the body is more or less cylindrical, the 

 head rounded, almost globular, and capable of being received into 

 the thorax as far as the eyes; the thorax is more or less convex be- 

 fore, and forms a sort of hood; the two first joints of the tarsi, as 

 well as the last, are elongated. 



B. capucinus; Bermestes capucinus, L., Oliv., Col. IV,77,i, 1. 

 Five lines in length, with a red abdomen and elytra of the 

 same colour. Very common in old wood in timber yards(l). 



Psoa, Fab. 



The Psoae only differ from the Bostrichi in their proportionally 

 narrower and more elongated body, with a depressed and almost 

 square thorax. The maxillae have but one lobe instead of two(2). 



Cis, Lat. Jlnobium, Fab. 



' Where the body is oval, depressed, or but little elevated, the tho- 

 rax transversal, rounded, and with a recurved lateral margin, slightly 

 dilated in the middle of the anterior edge; the last joint of the tarsi 

 is much longer than the preceding ones. The head of the males is 

 frequently tuberculated or furnished with horns. 

 These Insects inhabit the fungi of trees(3). In 



Nemosoma, Desmar, 7ps, Oliv. Colydium, Hellw. 



The body is long and linear; the antennae are hardly longer than 

 the head; the rs^indibles are strong, salient and dentated at the ex- 

 tremity; the anterior tibiae are triangular and dentated exteriorly, and 

 the tarsi slender and elongated(4). 



The second genus of this division, or 



(1) For the other species, see Olivier, Fabricius, &c. 



(2) See Fabricius and Rossi. 



(3) Lat., Gener. Crust, et Insect., Ill, p. 11, and Gyll., Insect. Suec, III, p. 

 377, and IV, p. 624. I have seen but a single and badly preserved specimen of the 

 Sphindus Gyllenhallii: it appeared to me that this genus differed but little from 

 the present one. 



(4) Lat., Gener Crust, et Insect., Ill, p. 12, and I, xi, 4. 



