Oo 
CONOTRACHELUS. age 
at the base, the ridge on 3 twice, and that on 5 once, abruptly interrupted, the median elevation on 3 
very prominent. Mesosternum flattened between the coxe. Ventral segments very sparsely, finely 
punctate. Femora clavate, bidentate, the outer tooth minute and distant from the larger one. Tarsal 
claws with the tooth nearly as long as the claw itself. 
Length 44, breadth 23 millim. ( 9.) 
Hab. Guatemata, Senahu in Vera Paz (Champion). 
One specimen. This insect has much the facies of C. varicolor, but the prothorax 
is subquadrate and strongly quadrituberculate, the rostrum is short (with the antenne 
inserted further back than usual amongst the species with a short rostrum in both 
sexes), the eyes are very large and narrowly separated, the femora are bidentate, &c. 
93. Conotrachelus constrictus, sp. n. 
Subovate, shining, black or piceous, slightly mottled with ferruginous, the antenna and tarsi entirely of the 
same colour; the vestiture very sparse, ochreous or greyish, fasciculate on the elytra, and also condensed 
into a small patch on the humeri and a spot at the base of the third interstice, the femora annulate. 
Head densely punctate, transversely suleate between the eyes above, the latter separated by rather less 
than the width of the rostrum; rostrum stout, curved, a little longer than the head and prothorax, 
rugulose and sharply 5-carinate, the apical portion sparsely punctate, smoother from the middle onwards 
in the 2, the antenne inserted at about one-fourth from the tip, joints 1 and 2 of the funiculus subequal 
in length. Prothorax much broader than long, subquadrate, abruptly narrowed and constricted in front, 
moderately bisinuate at the base, crenulate at the sides, the latter obtusely dentate anteriorly ; densely, 
rugulosely punctate, the dise with four tubercles about the middle and two others at the apex. LElytra 
subtriangular, transversely convex, strongly constricted and feebly dilated beneath the prominent rounded 
humeri; coarsely seriate-punctate and shallowly striate, the interstices 3, 5, 7, and 9 very sharply 
costate, the ridge on 3, 5, and 7 abruptly interrupted below the base only. Mesosternum flattened 
between the cox, bituberculate in front. Ventral segments sparsely, finely punctate. Legs rather 
elongate ; femora strongly clavate, each with an acute triangular tooth, and usually a minute prominence 
placed at some distance exterior to it. Tarsal claws with a short tooth. 
Length 33-4, breadth 2-2; millim. (d 2.) 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
_ Four specimens. ‘This insect resembles C. sinuaticollis, C. lineatipes, &c., but has a 
transversely subquadrate prothorax, with a double series of tubercles along the middle 
of the disc, and shorter, subtriangular elytra, the latter with the three dorsal coste 
abruptly once interrupted. 
94, Conotrachelus sextuberculatus, sp. n. 
Subovate, shining, black, mottled above with ferruginous, the antenn and legs also of that colour, the femora 
annulate with black ; the vestiture fulvous, intermixed with greyish, rather close, except upon the bare 
spaces on the elytra, the femora biannulate. Head densely punctate, transversely depressed and faintly 
earinate in front; rostrum very stout, arcuate, scarcely longer than the prothorax, rugulose and uni- 
carinate, rather sparsely punctate at the apex, the antenn inserted near the tip, joints 1 and 2 of the 
funiculus subequal in length. Prothorax broader than long, subquadrate, abruptly narrowed and 
constricted towards the apex, the sides and base moderately sinuate; finely, rugulosely punctate, carinate 
down the centre, and with six tubercles on the disc (placed three on each side in an oblique series, the 
median the largest) and two short parallel ridges at the apex. LElytra subtriangular, narrowing from 
the base, strongly sinuate in front, the humeri obliquely truncated and dentiform ; coarsely seriate- 
punctate, the interstices narrow, 3, 5, 7, and 9 very sharply and strongly costate, the ridge on 3 and 5 
BIOL. CENTR.-AMER., Coleopt., Vol. LV. Pt. 4, September 1904. 3 EE 
