652 RHYNCHOPHORA. 
transverse, rather convex, arcuately narrowing from the middle forwards, bisinuate at the base ; densely, 
somewhat coarsely punctate, and also carinate. Scutellum small, convex, smooth, the cavity rather 
large. Elytra a little wider than the prothorax, subparallel at the base, the humeri obtuse ; punctate- 
striate, the interstices punctulate, 3, 5, 7, and 9 narrowly costate. Beneath dull, closely, rather finely 
punctate. Mesosternum prominent, v-shaped. Legs short and stout; femora unidehtate ;_ tibise 
carinate and somewhat rounded externally. 
Length 4, breadth 2 millim. (9?) 
Hab. Panama, Bugaba (Champion). 
One specimen. The bare space on the prothorax is probably due to abrasion. This 
species is very like some of the smaller forms here referred to Apteromechus, but 
differs from them in having a well-developed scutellum, an elongate antennal club, 
and an angularly emarginate mesosternum. The following is the Guatemalan 
representative of it. 
33. Cryptorrhynchus dorsuarius, sp. n. (Tab. XXXII. figg. 6, 6a.) 
Very like O. ruralis, but a little more elongate; the vestiture darker, the elytra with small, scattered, white 
spots on the middle of the disc; the prothoracic carina abbreviated; the elytra less convex, somewhat 
flattened on the disc towards the base; the scutellum depressed, with a small tubercle in front; the 
femora more sharply dentate; the anterior tibie slightly sinuate within. 
Length 4,1,, breadth 1,9, millim. (9?) 
Hab. Guatemata, Chiacam in Vera Paz (Champion). 
One specimen. ‘The vestiture of the prothorax in this insect appears to be more 
condensed at the sides and down the middle than on the rest of its surface. 
Species moderately large, oblong-ovate, sparsely squamose and strongly setose, with the eyes 
covered in repose, the rostrum feebly curved, the antennal club oblong-ovate, the prothorax 
fasciculate, the elytra with oblong setigerous prominences on the disc and prominent humeri, 
the mesosternum prominent, horseshoe-shaped, the ventral segment 2 longer than 3, the 
femora unidentate. (No. 34.) 
34. Cryptorrhynchus ferox, sp.n. (lab. XXXII. figg. 7,7, 3 .) 
Oblong-ovate, opaque, black, the antenne fusco-ferruginous ; sparsely clothed with small fulvous scales, the 
prothorax with a narrow line down the middle and another on each side beneath whitish or fulvous, the 
upper surface and legs also somewhat closely set with long, coarse, erect, black and fulvous sete, the 
black sets on the prothorax clustered into two fascicles at the apex, another on the median prominence, 
and one on each side before the middle, and those on the elytra also becoming fasciculate on the four 
dorsal elevations, the posterior two of which bear a tuft of still longer fulvous sete in front. Head 
closely punctate, the eyes depressed, lateral ; rostrum feebly curved, very little longer than the prothorax, 
stout, rugosely punctate and subcarinate, in the 2 smoother, shining, and not so thick, the antenne 
inserted slightly beyond the middle, joint 2 of the funiculus shorter than 1, the club oblong-ovate, with 
deep transverse sutures. Prothorax transversely subquadrate, very abruptly narrowed in front, bisinuate 
at the base; rather sparsely, finely punctate, the disc more or less swollen in the centre. Scutellum small, 
rounded. lytra much wider than the prothorax, subparallel in their basal third, flattened on the 
disc anteriorly, the humeri swollen and obliquely truncated ; seriate-punctate, the interstices alutaceous, 
3 with two oblong setigerous elevations (one at and the other before the middle), and 5, 7, and 9 
