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RHYNCHOPHORA. 
Erethistes triangularis (p. 311). 
To the Costa Rican locality given, add :—Savanillas de Pirris, Escazu (Underwood). 
Two more specimens of this species have now heen received, females, differing from 
the type, male, in having the rostrum longer and smoother and the legs a little 
shorter. In both sexes the first joint of the funiculus is as long as the next four 
joints united. 
2(a). Erethistes rhomboides, sp. n. 
Rhomboidal, nigro-piceous, beneath densely, above sparsely, clothed with coarse yellowish-white scales, the 
scales on the elytra clustered into irregular patches, the dise of the prothorax almost bare (probably 
abraded) ; the vestiture of the legs sparser, whitish. Head closely punctate, rugulose between the eyes, 
which are rather prominent and separated by the width of the rostrum; rostrum curved, reaching the 
front of the metasternum, rugulosely punctate, becoming much smoother in its apical half, the antenne 
inserted at about the middle, joint 1 of the funiculus as long as 2-4 united. Prothorax conical, bisinuate 
at the base; minutely punctate, sparsely, transversely granulate on the disc. Scutellum rounded, sulcate. 
Hlytra oblong-cordate, separately rounded at the apex, the humeri rounded and forming a continuous 
outline with the sides of the prothorax; the surface uneven, transversely depressed below the basal 
margin, interruptedly seriate-punctate, the depressed spaces on the dise closely, minutely punctate, the 
other portions smoother. Beneath closely, finely punctate. Femora clavate, sharply dentate, the posterior 
pair reaching beyond the apex of the elytra. Tibix mucronate at the inner apical angle, the anterior 
and intermediate pairs unarmed at the outer angle, the posterior pair angularly widened at the apex. 
Length 10, breadth 43 millim. (92?) 
Hab. Costa Rica, Savanillas de Pirris (Underwood). 
One worn specimen. Less elongate than /. triangularis, the humeri of the elytra 
less prominent and in a line with the sides of the prothorax, the flanks of the latter 
densely squamose, the disc of the elytra differently sculptured. The vestiture of the 
upper surface is probably almost as dense as in Cholus cretaceus when the insect 
is fresh. 
CRYPTORRHYNCHINA. 
CHALCODERMUS (p. 316). 
Chalcodermus vittatus (p. 324). 
C. Schaeffer (Journ. New York Ent. Soc. 1904, p. 233) has recorded this species 
from Brownsville, Texas. 
CONOTRACHELUS (p. 339). 
Conotrachelus varicolor (p. 348). 
To the locality given, add :—Cosra Rica, San Carlos, 200 metres (Biolley). 
Three specimens, considerably larger than the pair described from Chiriqui. 
12 (a). Conotrachelus biolleyi, sp.n. (Tab. XXXV. figg. 29, 29a, 2.) 
Subovate, black, the antenne and the tips of the tarsi ferruginous ; the prothorax with an angulated line on 
each side of the disc, which is dilated or bifurcated posteriorly, and the elytra with a very large, broad. 
