230 RHYNCHOPHORA. 
distinctly punctate prothorax, deeply striate elytra, with smooth flat interstices, and 
bidentate femora. 
12. Diastethus ruficollis. (Tab. XIII. figg. 10, 104, ¢.) 
Centrinus ruficollis, Boh. in Schénh. Gen. Cure. iii. p. 781’. 
Subrhomboidal, shining, black, the prothorax (the anterior lobe excepted) rufous above, the antennz some- 
times obscure ferruginous; glabrous above, the punctures of the under surface each with a minate 
hair-like scale. Rostrum thickly punctate in the ¢, much smoother in the 9. Antennal club ovate. 
Prothorax almost smooth. Scutellum strongly transverse. Elytra triangular, deeply striate throughout, 
the strie faintly punctate, the interstices flat, the sutural region not depressed. Prosternal suleus deep. 
Femora bidentate, and sometimes with one or two small denticles also. 
3. Prosternum unarmed ; first ventral segment depressed down the middle. 
Length 5-64, breadth 3-4 millim. (d¢ 2.) 
Hab. Mexico (Truqui, in coll. Fry; ex coll. Flohr), Cuernavaca (Sallé, Hoge), 
San Andres Tuxtla, Toxpam, Playa Vicente, Vera Cruz, Yolos (Saidé), Chilpancingo, 
Amula (H. H. Smith), Tehuantepec (Mus. Brit.); Nicaracua, Chontales ( Belt).— 
Braziu }. 
Not uncommon in Mexico and perhaps nothing more than a colour-variety of the 
subsequently described D. ater. The elytra are deeply striate, and the femora are 
bidentate and also more or less denticulate. 
13. Diastethus sanguinicollis. 
Cryptorhynchus sanguinicollis, Germ. Ins. Sp. Nov. p. 224’. 
Centrinus sanguinicollis, Boh, in Schénh. Gen. Cure. ii. p. 779°; vill. 1, p. 243°. 
Hab. Mexico, Toxpam (Sallé).—Braziu } 2 °, 
There is a single small specimen of this species from Mexico in the Sallé collection. 
It is very like D. rujficollis, but the elytral strie are faint on the middle of the disc 
(the sutural and marginal strie only are deeply impressed), and the anterior femora 
alone are distinctly bidentate. 
14. Diastethus erythroderes, sp.n. (Tab. XIII. figg. 11, lla, 9.) 
Subrhomboidal, convex, shining, black, the prothorax (the anterior lobe excepted) rufo-testaceous above, the 
antenne fusco-ferruginous; glabrous above, the punctures of the under surface each with a minute 
hair-like scale. Head sparsely, finely punctate; rostrum strongly arcuate, thickened towards the base 
and flattened towards the tip, almost smooth, the basal portion only striato-punctate at the sides, the 
scrobes extending forward to near the apex, the antenne inserted behind the middle, joints 2-6 of 
the funiculus short, together about the same length as the stout, oblong-ovate club. Prothorax trans- 
verse, strongly bisinuate at the base, almost smooth. Scutellum transverse. Elytra triangular, deeply 
striate throughout, the strie faintly punctate, the interstices smooth and flat. Beneath sparsely, rather 
‘coarsely punctate. Prosternal sulcus broad and deep. Anterior femora unidentate, the others sulcate 
and bidentate beneath. 
3. Prosternum unarmed ; first ventral segment broadly flattened in the middle. 
Length 53-6, breadth 31-35 millim. (¢ 2.) 
Hab. Muxico, Acapulco, Jalapa (Hége), Toxpam (Sallé). 
