MICROCLEOGONUS.—THRASYOMUS. 459 
developed ocular lobes; scutellum oval; elytra each with ten sharply-cut strie ; rostral canal deep, open 
and very broad behind ; prosternal ridges extending across the deeply excavate, contiguous anterior coxe ; 
intermediate coxee moderately, and the posterior coxe very widely, separated ; mesosternum very short ; 
metasternum sharply plicate laterally between the coxe, the episterna narrow; ventral segments 2-4 
short, 1 with the intercoxal portion widened out into a broad, flattened, laterally and posteriorly 
margined plate ; femora unarmed, deeply sulcate beneath for the reception of the tibiew, the anterior pair 
also sulcate behind ; tibie straight, narrow, triangularly dilated at the base externally and also sulcate 
on the outer edge at the apex, feebly unguiculate at the outer apical angle, the inner angle rounded ; 
tarsi with joint 3 bilobed, the claws small, slender, divergent, simple; body convex, rhomboidal. 
The single minute species from which the above characters are taken is nearly 
related to Cleogonus, but is easily recognizable by the peculiarly shaped tibiz, the 
lamellate first ventral segment, &c. In these forms the legs are so interlocked in 
repose that it is difficult to open them, the tibie in Microcleogonus closely fitting 
into the deeply sulcate femora. 
1. Microcleogonus tibialis, sp. n. (Tab. XXII. figg. 17, 17a, 6; 17, 
intermediate leg.) 
Shining, piceous or rufo-piceous, rather sparsely clothed with decumbent, narrow, white scales, the scutellum 
albo-squamose. Head finely punctate ; prothorax much broader than long, subconical ; closely, shal- 
lowly punctate. Elytra oval, a little wider than the prothorax; deeply striate, the strie finely 
punctate, the interstices almost flat, sparsely punctate. Beneath rather coarsely punctate; ventral 
segments 2-4 almost smooth, 5 closely, finely punctate. . 
Length 13-254, breadth 1,,-1q millim. 
Hab. Guatemata, Zapote (Champion); Panama, Tolé (Champion). 
Four specimens. This inconspicuous Cryptorrhynchid might be easily mistaken for 
a small Barid. 
Sect. SOPHRORHINIDES. 
Sophrorhinides, Lacordaire. 
THRASYOMUS. 
Thrasyomus, Pascoe, Ann. & Mag. Nat. Hist. (5) v. p. 492 (1880). 
Two species were referred to this genus by Pascoe, one from Nicaragua, the other 
from Ecuador. In one of the two others now added the rostrum is elongated in the 
female, and the rostral canal, in consequence, is longer, nearly reaching the apex of 
the metasternum, the surrounding walls being much raised throughout. 
1. Thrasyomus tumens. (Tab. XXII. figg. 18, 184, 3.) 
Thrasyomus tumens, Pasc. Ann. & Mag. Nat. Hist. (5) v. p. 493°. 
Eupterus carinatus, Jekel, in litt. *. 
Hab. Nicaragua, Chontales! (Belt, Janson); Panama, Bugaba (Champion), Chiriqui 
( Trétsch).—Amazons (Mus. Brit.). 
3 NN 2 
