CONOTRACHELUS. 448 
sternum rather deeply excavate down the middle. Legs short and stout; femora strongly ciavate, acutely 
unidentate; tarsal claws with a long tooth. 
Length 43, breadth 2} millim. (9.) 
flab. Panama, Bugaba (Champion). 
One specimen. In the uniformly distributed brownish vestiture this species 
resembles C. conicicollis and C. serpentinus*, but it has both the meso- and metasternum 
rather deeply excavate down the middle, the elytral interstices are all finely costate 
posteriorly, &c. 
187. Conotrachelus nigricollis, sp.n. (Tab. XXI. figg. 27, 27 a.) 
Subovate, black, opaque, the elytra shining (when denuded), the latter sometimes mottled with rufo-piceous 
or entirely of that colour, the antennx, and the legs in part, ferruginous; the elytra and legs (the basal 
half of the femora excepted) densely clothed with rather coarse, narrow, brownish scales, the rest of the 
surface almost bare. Head densely, rugulosely punctate, transversely depressed in front; rostrum 
moderately stout, arcuate, a little longer than the head and prothorax, dull, rugulose, and unicarinate, 
thickly punctate and shining at the tip, the antenne inserted at about one-third from the apex, joint 2 
of the funiculus slightly shorter than 1. Prothorax strongly transverse, abruptly narrowed and constricted 
in front, feebly bisinuate at the base, the sides usually sinuate and anteriorly dentate; closely, finely 
punctate, the disc binodose at about the middle and also at the apex. Elytra nearly twice the width of 
the prothorax, comparatively skort, subparallel at the base, the humeri dentiform; coarsely seriate- 
punctate, the interstices finely and densely rugulose, 3, 5, 7, and 9 sharply costate, the ridge on 3 
interrupted or depressed below the base. Rostral canal broad and deep, reaching to about the middle 
of the metasternum. Ventral segments very sparsely punctate. Legs short; femora strongly clavate, 
acutely unidentate ; tarsal claws with a short tooth. 
Length 3-34, breadth 14-2 millim. (¢?) 
Hab. Mexico, San Andres Tuxtla (Sallé), Iguala, Jalapa (Hoge). 
Four specimens. <A peculiar little form, with the elytra densely clothed with narrow 
brownish scales, and the rest of the body almost bare and opaque; the prothorax 
quadrinodose and closely punctate, and usually with the sides dentate; the shoulders 
of the elytra dentiform; the legs short; and the rostral canal broad and deep. An 
abraded female from Chiacam, Guatemala, probably belongs to the same species, 
though it has the rostrum slender, longer, and almost smooth from near the base. 
A male from Bugaba, Panama, too, seems to be also referable to C. nigricollis, this 
insect having the vestiture and ground-colour of the elytra more mottled. 
188. Conotrachelus setosus. (Tab. XXI. figg. 28, 28a; 28 4, mesosternum.) 
Cryptorhynchus setosus, Ros. in Schénh. Gen. Cure. iv. p. 186°. 
Conotrachelus setosus, Boh. in Schénh. Gen. Cure. vill. 2, p. 53”. 
Cryptorhynchus tomentosus, Sturm, in litt.’. 
Hab. Mexico, Vera Cruz (Chevrolat!; Sallé); Guaremata, El Tumbador, Las 
Mercedes, Senahu (Champion). 
* In the description given of this species (anted, p. 433) the peculiar form of the hind tibia of the ¢ was 
not noted: it is shown, however, on Tab. XXI, fig. 19 6. 
3 LL 2 
