386 RHYNCHOPHORA. 
larger one. Compared with the Mexican C. maculipes, it is less flattened above, 
the prothorax is more distinctly quadrituberculate, the elytra have more rounded 
humeri and less broadly interrupted dorsal costa, &c. 
80. Conotrachelus quadrinodosus, sp. n. (Tab. XIX. figg. 22, 22a, 3.) 
Subovate, slightly shining, piceous or rufous-piceous, the antenne and the tips of the tarsi ferruginous; the 
vestiture rather close, ferruginous or ochreous, that on the elytra (except at the shoulders and apex) 
paler, the prothorax with a sinuous, condensed, oblique, ferruginous line on each side of the disc, the 
femora with an ochreous or whitish ring, the anterior pair with a faint line of ferruginous scales at 
the base above. Head squamose, transversely depressed before the eyes, rugosely punctate, carinate 
in the middle and tuberculate on each side; rostrum (¢ 92) exceedingly stout, curved, a little longer 
than the head and prothorax, 5-carinate, sparsely punctate at the tip, the antenne inserted at about one- 
fourth from the apex, joints 1 and 2 of the funiculus subequal in length. Prothorax transverse, abruptly 
narrowed and strongly constricted in front, deeply bisinuate at the base, the sides more or less sinuate ; 
coarsely, rugosely punctate, the disc obsoletely carinate anteriorly and bituberculate before the middle 
and at the apex. LElytra narrowing from near the base, constricted a little below the humeri, and strongly 
sinuate in front; coarsely seriate-punctate, the interstices rugulose, 3, 5, 7, and 9 sharply costate, the 
ridge on 3 and 5 twice, and that on 7 once, abruptly interrupted. Mesosternum flattened between 
the coxa, obsoletely bituberculate in front. Ventral segments shining, sparsely, finely punctate, 
5 depressed at the apex in the ¢. Legs stout; femora clavate, each with a triangular tooth, and a 
minute tooth nearly midway between it and the apex; posterior tibia hollowed on the inner side at the 
apex in the ¢; tarsal claws with a short tooth. 
Length 5;—6, breadth 25-37 millim. (¢ @.) 
Hab. Panama, Bugaba (Champion). 
Five specimens. The quadrinodose prothorax distinguishes this insect at once from 
C. duplicatus and other similar forms. 
81. Conotrachelus gibbipennis, sp.n. (Tab. XIX. figg. 23, 234, 3.) 
Subovate, rather broad, dull, ferruginous, mottled above and beneath with piceous ; the vestiture very fine, sparse, 
ochreous and white intermixed, becoming closer cn the oblique depressions of the elytra, the femora 
faintly annulate. Head closely, rugulosely punctate ; rostrum ( ¢) stout, curved, about as long as the 
head and prothorax, closely, rugulosely punctate throughout, subcarinate down the middle, ( 2 ) smoother 
and carinate, the antenne inserted towards the tip, joint 2 of the funiculus a little shorter than 1. 
Prothorax slightly broader than long, narrowed in front, deeply bisinuate at the base, the sides feebly 
crenulate; the surface uneven, rugulosely punctate, carinate anteriorly, feebly 4-tuberculate on the 
middle of the disc, and with two small tubercles at the apex. LElytra somewhat cordate, constricted 
beneath the humeri, sinuate in front, the disc broadly and obliquely depressed a little below the middle ; 
seriate-punctate, the interstices rugulose, granulate towards the base, 3, 5, 7, and 9 strongly costate, the 
ridge on 3 and 5 twice, and that on 7 once, abruptly interrupted, the median elevation on 3 slightly 
oblique, very large, swollen, and prominent, 10 with a short acute ridge at the base. Mesosternum 
bituberculate in front. Ventral segments shining, with a few minute scattered punctures, 5 shallowly 
trifoveate in the ¢. Femora clavate, each with a sharp triangular tooth and a minute tooth placed at 
some distance exterior to it. Tarsal claws with a short tooth. 
Length 43-44, breadth 34 millim. (¢ 9.) 
Hab. Mexico, Jalapa (Smith, ex Wickham: 2); Guaremaa, San Gerénimo (Cham- 
pron: 3). 
A single specimen from each locality, the Mexican insect being immature and much 
