CONOTRACHELUS. 387 
less rugose above than the Guatemalan one, from which the description is mainly taken. 
The arrangement of the tubercles is similar, but in the Mexican example the broad 
oblique depressions of the elytra are flatter and better defined, and the vestiture is 
closer and greyish in colour. 
82. Conotrachelus hybophorus, sp. n. (Lab. XIX. figg. 24, 24a, ¢ .) 
Oblong-ovate, shining, black, mottled with rufo-ferruginous, the antenne and the tips of the tarsi ferruginous; 
the vestiture rather long, irregularly distributed, fulvous, intermixed with white, becoming paler and 
more condensed on the oblique depressions of the elytra, the femora biannulate with white. Head convex, 
closely punctate, depressed and foveate between the rather narrowly separated eyes ; rostrum very stout, 
curved, about as long as the head and prothorax, sulcate at the sides, tricarinate above, the apical portion 
bare and very sparsely, finely punctate, the antenna inserted at one-fourth from the tip, joint 2 of the 
funiculus shorter than 1. Prothorax slightly broader than long, subquadrate, abruptly narrowel and 
laterally compressed in front, strongly bisinuate at the base, the sides uni- or bituberculate anteriorly ; 
the surface very uneven, rugulosely punctate, the disc quadrituberculate, obliquely swollen on each side 
towards the base, and with a smooth stout median carina down the anterior half. Elytra oblong-cordate, 
obliquely constricted beneath the humeri, which are rounded externally and prominent in front, the dise 
broadly and obliquely depressed at about the middle; seriato-foveolate, the interstices 3, 5, 7, and 9 
strongly costate, the ridge on 3 and 5 twice, and that on 7 once, abruptly interrupted, 10 also sharply 
costate at the base. Mesosternum flattened between the coxe, hollowed in front. Ventral segments 
very sparsely, finely punctate, 5 shallowly foveate on each side. Femora clavate, unidentate, the tooth 
on the anterior pair short. Tarsal claws with a short tooth. 
Length 63-62, breadth 33 millim. (<.) 
Hab. Mexico, Omilteme in Guerrero 8000 feet (Champion). 
‘Two specimens. Smaller, narrower, and less robust than the Colombian C. coral- 
lifer, Boh., the femora unidentate, the elytra with a more oblique, broad, submedian 
depression interrupting the cost, the elevations Jess swollen, and the humeri rounded. 
It is more elongate and more shining than C. gibbipennis. 
83. Conotrachelus cerulescens, sp.n. (Tab. XTX. figg. 25, 25a, 3.) 
Subovate, shining, black, the antenne and tarsi ferruginous; the vestiture fine, sparse, bluish, somewhat 
fasciculate upon the elytra and clustered into annuli on the femora. Head closely punctate; rostrum 
very stout, curved, not longer than the head and prothorax, gibbous at the base above, rugosely punctate 
and unicarinate in the ¢, smoother above in the @, the antenne inserted at about one-third from the 
tip, joint 2 of the funiculus much shorter than 1, 5-7 transverse. Prothorax transverse, abruptly 
narrowed in front, the sides almost parallel thence to the base, the latter strongly bisinuate ; coarsely, 
rugosely punctate, the dise feebly bituberculate before the middle and at the apex, shallowly, longi- 
tudinally sulcate in front, arcuately depressed towards the base, and sometimes with a short median 
carina. -Elytra subcordate, slightly flattened on the disc anteriorly, strongly sinuate at the base; 
coarsely seriate-punctate, the interstices narrow, uneven and here and there confluent, 3, 5, 7, and 9 
strongly costate, the ridge on 3 and 5 twice, and that on 7 once, abruptly interrupted. Mesosternum 
flattened between the coxe, slightly hollowed in the middle in front. Metasternum very coarsely, and 
the ventral segments finely and sparsely, punctate. FFemora clavate, with an acute triangular tooth, 
and a minute prominence exterior to it. Tarsal claws with a long tooth. 
Length 34-43, breadth 275-24 millim. (¢ 9.3 
Hab. Mexico, Acapulco (Lodge); Britisa Honpuras, Rio Hondo (Blancaneaua) ; 
GuatEeMaLA, Chiacoj in Vera Paz (Champion)—Co.omBia (Mus. Brit.). 
3 DD 2 
