COLEOPTERA. 97 



BOSTRICHUS. 



In 



BosTRicHus,G^ef/f. — Apate, Synodendron, Fah. — Dermestes, Lin.^ 



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

 head rounded, almost glohidar, and capable of being received into tlie 

 tiiorax as far as the eyes ; llie thorax is more or less convex before, 

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

 tlie last, are elongated. 



B. capucinus ; Dermestes cupucinus, L., Oliv., Col. IV, 77, 

 i, 1. Five lines in length, with red abdomen and elytra of the 

 same colour. Very common in old wood in timl^er yards *. 



PsoA, Fab. 



The PsoFO only differ from the Bostrichi in their proportionally nar- 

 roM'er and more elongated body, with a depressed and almost square 

 thorax. The maxilUe have but one lobe instead of two f. 



Cis, Lat. — Anobium, 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 jn'eceding ones. The head of the males is 

 frequently tuberculated or furnished with horns. 



These "insects inliabit the fungi of trees |. In 



Nemosoma, Desmar. — Ips, Oliv. — Colydium, Helho., 



The body is long and linear : the antennre are hardly longer than the 

 head ; the mandibles are strong, salient, and dentated at the extre- 

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

 the tarsi slender and elongated §. 



The second genus of this division, or 



MONOTOMA, 



Is distinguished from the first by the solid and globuliform club — the 

 tenth joint — of the antenna^. 



The body is elongated, depressed, and frequently forms a parallelo- 

 biped; the anterior part of the head is narrowed, and projects some- 

 what in the manner of a triangvilar and obtuse snout. The palpi are 

 very small, and, as well as the mandibles, not salient. 



In some, the head is not separated from the thorax by a strangula- 

 tion or sort of neck, and can be received into it. 



* For tlie other species, see Olivier, Fabricius, &c. 



-|- See Fabricius and Rossi. 



X Lat., Gfiier. Crust, et Insect., Ill, p. 11, and Gyll., Insect. Succ, III, p. 377, 

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

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

 present one. 



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



