MACROLECHRIOPS.—PSOMUS, 127 
flattened conical prominence on the intermediate, as well as on the anterior, coxe is 
a character I have not observed in any other Zygopid. 
1. Macrolechriops spinicoxis, sp.n. (Tab. VIII. fig. 6, 6 a, 3.) 
Subovate, dull, piceous, the antenne, tip of the rostrum, apical margin of the elytra, and tarsi ferruginous ; 
the vestiture rather sparse, ochreous and whitish, denser and coarser beneath, the prothorax with an 
oblong ochreous spot at the middle of the base, the elytra with a few widely scattered coarse scales and 
a short streak on the suture beyond the middle whitish, their basal half very sparsely squamose, the 
second interstice with a short blackish streak at the middle, the femora subannulate with fuscous. Eyes 
large, subcontiguous. Rostrum arcuate, rather long, rugulosely punctate and subcarinate at the base. 
Joints 1 and 2 of the funiculus equal in length. Prothorax transverse, narrowed and constricted in 
front; densely, finely punctulate, and sharply arcuato-carinate. Elytra broad, conjointly rounded at the 
apex ; punctate-striate, the interstices rugulose and somewhat convex. Metasternum densely squamose, 
the excavation included. 
Length 33, breadth 2 millim. 
Hab. Mexico, Toxpam in Vera Cruz (Sailé). 
One worn specimen. The unarmed femora, broad tibie, deeply excavate meso- 
sternum, shorter second joint of the funiculus, &c., separate If. spinicoris from Copturus 
centralis and C. exaratus, both of which have a somewhat similar facies. 
PSOMUS. 
Psomus, Casey, Ann. N. York Acad. Sci. vi. p. 458 (1892) ; ix. p. 667. 
This genus is based upon a single minute N.-American Zygopid, with a flattened 
abdomen, with segments 2-4 subequal in length, a narrow, conical prothorax, very 
convex, subtriangular elytra, and unarmed femora. The three species now added from 
Central America, each represented by a single example, are perfectly congeneric with 
P. politus, Casey, and I have seen other unarmed forms from South America in the 
British Museum that will have to be included in the same genus. 
1. Psomus caseyi, sp. n. 
Subrhomboidal, very convex, shining, black, the antenne, rostrum, tibia, and tarsi rufo-testaceous; the 
intraocular portion of the head, the rostrum, the prothorax with the flanks and an irregular patch on 
each side at the base above, the scutellum, the elytra with several small spots placed transversely across 
the disc beyond the middle and another near the apex, and the mesothoracic side-pieces, clothed with 
rather coarse white scales, the rest of the upper surface with a few scattered, decumbent, brownish hairs ; 
the vestiture of the femora white. Head finely punctate. Prothorax conical, closely punctate, except 
along the smooth median line. Elytra very convex, much wider than the prothorax, rapidly narrowing 
from about the basal third; deeply and rather coarsely punctate-striate, the interstices somewhat convex 
and faintly punctulate. 
Length 13, breadth % millim. 
Hab. GuateMaa, Duefias (Champion), 
Very like the N.-American P. politus, Casey (for an example of which we are 
indebted to Mr. Wickham), but with small scattered patches of coarse white scales on 
