144 
THE ORDER OP COLEOPTERA. 
Sub-family BAKIDIIDES. 
Bostrum various, often compressed and thickened at base ; scrobes 
commencing near the middle, and turning rapidly beneath. Scutellum 
distinct. Rostral canal wanting; but in Centrums there is an excava- 
tion between the coxae, which, in the male, often has a spine on each 
side. Intermediate segments of the abdomen usually arched or, angu- 
lated behind. The eyes are finely granulated, and partly covered by 
the thorax. The tiboe are usually mucronate or pointed at the ex- 
tremity. Size medium or small ; of elliptical or rhomboidal form ; 
usually black or brown, sometimes with reddish spots. The larvae live 
in the stems or roots of plants, and are sometimes very injurious to cul- 
tivated crops. They undergo their trausformations in the detritus 
which they have made, and with which they construct a kind of cocoon. 
N. A. genera: Centrums, Sck., (body short and rhomboidal), 11 spe- 
cies; Barulins, Sell., (body oblong or oval), 30 species; Madams, Soli., 
(body oblong rhomboidal), 2 species. 
Sub-family CALAXDIilDES. 
Rostrum more or less elongated; scrobes short. Antennae basal; 
scape usually reaching far onto the thorax; knob without joints, horny 
[Pig. 70.) am i shining at base, with a spongy extremity. 
./ Eyes finely granulated, large, depressed and ap- 
proximate below. Tip of abdomen exposed. Tarsi 
T not spongy beneath, 3d joint not bilobed. Size 
(TIpmYi sometimes small, but usually medium or large; 
} z OLT A some tropical species very large. Color black or 
* \ WP reddish. The larvae of the larger species inhabit 
YTa) the stems of plants, whilst the smaller are usually 
SFHBNOPHOHU 8 13-puncta- destructive to grain and seeds. When about to 
: u“whfch fife two transform they construct a coarse kind of cocoon 
spots ot tiie «mi of each eiyt- f rom |] ie materials in which they live. 
“e?d t e°view-a!t ! term! > oy. tipi We have three genera: Rhyncophorus, ITerbst, 
of large size, and distinguished for the excessive development of the 
side pieces of the metasternuin, 2 species ; Sphenophorus, Sch., of me- 
dium or rather large size, usually between a quarter and a half of an 
inch in length, 42 species ; and Galandra, Clairville, ( tiitophilus , Sch.,) 
less than a quarter of an inch in length, 3 species. 
Sub family COSSONIDES. 
Rostrum usually rather long ; scrobes short, commencing at or beyond 
the middle. Antennae short. Eyes small or wanting. Tip of abdomen not 
exposed. Tarsi short, filiform, not spongy beneath, 3d joint rarely hi- 
