DIPLOGRAMMUS.—BLABORRHINUS. 039 
Hab. Mexico, Mazatlan, Ventanas, Atlixco, Yautepec, Chilpancingo, Matamoros 
Izucar, Cuernavaca (Hége). 
Sent us in numbers by Hége. The white markings of the elytra are constant: the 
long curved stripe can only be seen when the insect is viewed in profile. 
. BLABORRHINUS. 
Blaborhinus, Chevrolat, Ann. Soc. Ent. Fr. 1882, p. 55. 
Chevrolat referred two species to this genus, both from Brazil. The Nicaraguan insect 
now added has the rostrum short and stout in both sexes—straight, canaliculate, and 
acutely carinate in the male, curved and rugosely punctate in the female. The ventral 
segments 2-4 are equal in length, the sutures deep. ‘The eyes are large, transverse, 
subangular and narrowly separated above. The prothorax has feebly developed ocular 
lobes. The scutellum is elongate. The elytra have rows of large, deep, oval punctures. 
The four hinder femora are dentate, the anterior pair unarmed. The mesosternum is 
horseshoe-shaped. 
1. Blaborrhinus catenulatus, sp. n. (Tab. XXVI. figg. 26, 26a, 6, 2; 
27, 3.) 
Elongate-ovate, robust, black ; the prothorax with a narrow apical fascia extending downwards to the anterior 
coxee, the elytra each with a transverse patch at the base and a common, ring-like, apical patch, and the 
dorsal sulci of the rostrum (¢), densely clothed with fulvous scales, the femora beneath and towards 
the apex thickly clothed with narrow ochreous scales, the vestiture of the rest of the surface very sparse, 
fine, and piliform. Head coarsely punctate, the eyes narrowly separated; rostrum ( Q ) very stout, short, 
curved, depressed at the base, thickly, rather coarsely, punctate, rugose and unicarinate at the base, 
(3) almost straight, much smoother, and deeply sulcate on each side of the acute median carina, the 
antenn: inserted at the middle, joints 1 and 2 of the funiculus subequal in length, the club ovate, 
acuminate. Prothorax convex, broader than long, narrowing from the middle forwards, the sides slightly 
sinuate behind, the base bisinuate, the hind angles sharp; subopaque, impressed with moderately coarse, 
rounded punctures, which are well-separated one from another. Llytra convex, elongate-subtriangular, 
one-half wider than the prothorax; with rows of large, deep, oval punctures placed on narrow faint 
striz, which become deeper towards the sides and apex, the interstices convex, almost flat on the anterior 
half of the disc, the base transversely depressed on each side of the scutellum. Beneath sparsely, coarsely 
punctate, Fifth ventral segment of the ¢ truncate at the apex, and also foveate, the apex of the terminal 
dorsal segment exposed in this sex. Legs very stout ; the intermediate and posterior femora dentate, the 
anterior pair unarmed. 
Length 133-14, breadth 6 millim. (d 2.) 
Hab. Nicaraeva, Chontales (Belt, Janson). 
One pair, apparently somewhat worn, the upper surface almost bare, except for the 
dense patches of fulvous scales. In general facies this insect is not unlike Cylindro- 
corynus imaginarius, Boh. It differs from B. bistrigirostris (Boh.‘ in having the 
prothorax more rounded at the sides, and the elytra impressed with larger punctures, 
the oblique basal streak reduced to a transverse patch, the apical patch smaller and 
differently shaped. If I have correctly identified the sexes, it is the male of B. catenu- 
latus that has the rostrum bisulcate and carinate. 
3 ZZ 2 
