204 RHYNCHOPHORA. 
§ 1. Seriate punctures of the elytra rounded. 
1. Thysanocnemis uniguttatus, sp.n. (Tab. XI. figg. 26, 264, 2.) 
Oblong-ovate, comparatively broad, piceous, the head, rostrum, antennew, and legs ferruginous or obscure 
ferruginous, the femora partly blackish, the elytra with a large, common, rhomboidal, brownish-black spot 
crossing the suture beyond the middle; thickly clothed with brownish-grey pubescence, the elytra also 
with short, pointed, semierect, pallid and black seta, which are arranged in an intermixed irregular series 
on each interstice, and the prothorax with some extremely short black sete on the disc, the vestiture of 
the elytral spot brownish-black, and a short streak on the suture between it and the apex similarly 
coloured. Rostrum curved, moderately stout, as long as the head and prothorax, shining and almost 
smooth, finely seriate-punctate towards the sides, the antenne inserted slightly before the middle; eyes 
very narrowly separated. Prothorax transverse, rounded at the sides, narrowed and constricted in 
front, densely, minutely punctate, with intermixed coarser punctures, subcarinate down the middle. 
Elytra punctate-striate, the interstices moderately convex and densely, rugulosely punctulate. Pygidium 
fully exposed. Femora unarmed ; tibie strongly unguiculate, the anterior pair sinuate within. 
Length 33, breadth 2 millim. ( 2.) 
Hab. Guatemaua, San Gerénimo in Vera Paz (Champion). 
One specimen. Easily recognizable by its comparatively large size, the velvety- 
black spot on the suture beyond the middle, and the intermixed, short, pallid and 
black setee on the elytra. The latter are not easily seen, unless the insect is viewed 
from the side. 
2. Thysanocnemis obscurus, sp. n. (Tab. XI. figg. 27, 27 a-c, 3.) 
Ovate, black or piceous, the head, rostrum, prothorax, and elytra piceous or rufo-piceous, mottled with black 
or blackish, the darker coloration showing a tendency to form vitta on the prothorax and one or more 
broad fascise on the elvtra, the latter with the humeri and a narrow, angulated, postmedian fascia usually 
reddish, the antenne and legs ferruginous, the femora blackish in the middle; thickly clothed with short 
pubescence, which is ochreous in colour between the eyes, on the reddish portions of the prothorax (forming 
three vitte), and on the postmedian fascia of the elytra, and for the rest fuscous, the elytra also with 
widely scattered, short, coarse, squamiform, semierect, pallid sete ; the vestiture of the under surface 
greyish. Head rugulosely punctate, the eyes somewhat narrowly separated; rostrum (¢ ) stout, curved, 
about as long as the prothorax, towards the sides rugulosely punctate and finely carinate, smooth and 
carinate along the centre, ( @ ) longer, smoother, and more slender, the antennz inserted at the middle in 
the 9, and at one-third from the apex inthe ¢. Prothorax much broader than long, rounded at the 
sides, narrowed in front, closely punctate, with a dense, minute, interstitial punctuation, and an 
abbreviated, smooth, raised median line. Elytra gradually narrowing from a little below the base ; 
finely punctate-striate, the interstices equal in width, almost flat, and densely punctulate. Femora 
unarmed; anterior tibie simply sinuate in both sexes. 
Length 23-8, breadth 13-15 millim. (d 2.) 
Hab. GuateMaLa, Yzabal (Sa/lé), Senahu, Calderas 7000 feet (Champion). 
Found in plenty on the slope of the Volcan de Fuego at Calderas, singly elsewhere. 
The common, narrow, angulated postmedian fascia of the elytra is sometimes obsolete, 
otherwise the specimens vary very little. The species inhabits both the “ tierra 
caliente” and the “ tierra templada.” 
