152 RHYNCHOPHORA. 
1. Perigaster tetracanthus, sp.n. (Tab. IX. figg. 5, 5a, 3.) 
Broad ovate, short, dull, black or piceous, the elytra rufescent in one specimen, the antenne, anterior margin 
of the prothorax, apical margin of the elytra, and legs ferruginoas; thickly clothed with small scales ; 
the prothorax with the entire disc, a faint median line (and sometimes a small spot near each lateral 
tubercle also) excepted, blackish, and the declivous sides whitish or ochreous ; the elytra blackish-brown or 
brown, more or less mottled with cincreous beyond the middle, the pallid scales sometimes predominating 
over their entire surface; the vestiture of the under surface whitish or ochreous. Head and rostrum 
rugulosely punctate, the vertex carinate, the eyes rather prominent, without supra-orbital ridge, the 
rostrum short and stout. Prothorax rapidly narrowing from near the base, densely, finely punctate ; 
the disc gibbous and suleate, the lateral tubercles acute, the anterior margin broadly and shallowly 
emarginate in the middle, the emargination limited on each side by an acute compressed tubercle. 
Elytra broad, finely punctate-striate, the interstices feebly convex and densely rugulose, the suture 
depressed at the base. Prosternal suleus moderately deep, the anterior coxee separated by about the 
width of one of them. Intermediate tibie sharply, and the posterior tibice feebly, unguiculate at the 
inner apical angle in the 3 ; tarsal claws with a long tooth. 
Length 2-2}, breadth 12-12 millim. (¢ 9.) 
* Hab. Mexico (Lége, in coll. Solari), 'Teapa (H. H. Smith); Guaremana, San 
Gerénimo (Champion); Costa Rica, San José (Biolley). 
Seven specimens, varying in the colour of the vestiture, &c., though the prothorax 
always has a very large triangular blackish space on the disc. 
Sect. CEUTHORRHYNCHI. 
Ceutorhynchi, Dietz. 
CEUTHORRHYNCHUS. 
Ceuthorhynchus, Germar, Ins. Sp. Nov. p. 217 (1824) ; Schénherr, Gen. Cure. iv. p. 475. 
Ceutorhynchus, Leconte, Proc. Am. Phil. Soc. xv. p. 272 (part.); Dietz, Trans. Am. Ent. Soe. 
Xxlll. pp. 419, 420 (part.). 
A holarctic genus, very numerous in species in the Palzarctic region, and in North 
America extending southwards to the mountains of Guatemala. 
1. Ceuthorrhynchus rape. 
Ceuthorhynchus rape, Gyll, in Schéuh. Gen. Cure. iv. p. 5477; Lec. Proc. Am. Phil. Soe. xv. 
pp. 278, 274°. 
Ceuthorhynchus uffluentus, Dietz, Trans. Am. Ent. Soc. xxiii. pp. 420, 421°. 
Hab. Norvu America, Canada 2%, Middle and Western States 23,—Mexico (Truqui, 
an coll. Fry), Mexico City (1. H. Smith)—Europe}, &c. 
There can be little doubt that Leconte correctly identified this species, Dietz’s 
comparative description (/.¢.) of the European C. rape, Gyll., being evidently taken 
from the allied C. assemilis, Payk. We are indebted to Mr. Wickham for a N.-American 
example of C. affluentus for comparison. The insect has probably been introduced 
into Mexico with cruciferous plants. One of the four Mexican specimens before me is 
in very fresh condition. 
