CEUTHORRHYN CHUS.—CEUTHORRHYNCHIDIUS. 153 
2. Ceuthorrhynchus truquii, sp.n. (Tab. IX. fig. 6, ¢.) 
Short ovate, somewhat flattened above, dull, nigro-piceous or piceous, the antenna, tibia and tarsi, and 
sometimes the femora also, ferruginous ; the upper surface thickly clothed with small, narrow, intermixed 
brown and white scales, the latter condensed into three lines on the prothorax and various small scattered 
patches on the elytra, the elytra also with a dense, elongate, white scutellar patch ; the vestiture of the 
legs and under surface white. Head rugulosely punctate ; rostrum long and slender, arcuate, the basal 
half thickly, and the apical half sparsely, punctate, smoother in the @ ; antennal club acuminate-ovate. 
Prothorax short, abruptly narrowed and constricted at about the middle, densely, finely punctate, the 
disc faintly suleate, the lateral tubercles well-developed, the anterior margin a little raised on each side of 
the shallow central emargination, the ocular lobes prominent. Elytra much wider than the prothorax, 
oblong-snbquadrate, finely punctate-striate, the interstices densely rugulose. Femora unarmed. Inter- 
mediate and posterior tibiz unguiculate at the inner apical angle in the ¢. Tarsal claws with a short 
tooth. 
Length 2-21, breadth 11-11 millim. (¢ 2.) 
Hab. Mexico (Truqui, in Mus. Brit.), Omilteme in Guerrero 8000 feet (H. HH. 
Smith) ; Guatemaua, Quiche Mts. 7000-9000 feet (Champion). 
Seven examples. Near C. adspersulus, Dietz, but with the close fine vestiture 
wholly squamiform, the intermixed narrow white scales on the elytra not so large, the 
prothorax with prominent lateral tubercles. The elytral markings are variable and the 
legs are sometimes entirely ferruginous. 
8. Ceuthorrhynchus adspersulus. 
Ceuthorrhynchus adspersulus, Dietz, Trans. Am. Ent. Soe. xxiii. pp. 437, 441%. 
Hab. Nortu America, California and Arizona !.—Mexico, Northern Sonora (Morrison). 
Sent to us in numbers as from Sonora, under the name C. pustllus. The elytral 
vestiture in this insect is piliform intermixed with rather large oval white scales. 
CEUTHORRHYNCHIDIUS. 
Ceuthorhynchidius, Jacquelin Duval, Gen. Col. Europ. i. Introd. p. ceviii (1857) ; iv. p. 60 (1868). 
Calosirus, Thomson, Skand. Col. i. p. 140 (1859) ; vii. p. 254 (1865). 
Ceutorhynchus, Leconte, Proc. Am. Phil. Soc. xv. p- 272 (part.) ; Dietz, Trans. Am. Ent. Soe. 
Xxil. pp. 419, 420 (part.). 
This genus has not been adopted by American Coleopterists, nevertheless it seems 
to me convenient to retain it, the species being easily separable from Ceuthorrhynchus 
by the 6-jointed funiculus. Fourteen N.-American forms possess this character and 
two are now added from Mexico, 
1. Ceuthorrhynchidius wickhami, sp. n. (Tab. IX. figs. 7,7, 9 .) 
Oblong ovate, flattened above, dull, nigro-piceous, the anterior margin of the prothorax and the legs sometimes 
ferruginous ; the upper surface densely clothed with small, narrow, intermixed brown and whitish scales, 
the latter condensed into a faint median vitta on the prothorax and various small scattered patches on 
the elytra, these becoming coalescent at the apex, the elytra also with a dense, oblong, scutellar patch of 
overlapping white scales; the vestiture of the under surface and legs whitish. Head rugulosely 
BIOL, CENTR.-AMER., Coleopt., Vol. IV. Pt. 5, February 1907. xx 
