1 8 Memoirs on the Coleoptera 



the thoracic width; eyes moderate, rather convex; front smooth, 

 slightly convex, the anterior impressions broad; posterior super- 

 ciliary puncture deep, at a long distance from the eye, the anterior 

 wholly obsolete; antennae dark ferruginous, rather slender, not quite 

 half as long as the body, the third joint nearly a third longer than 

 the fourth; second palpal joint much thicker than the slender third 

 and the gradually attenuate fourth; prothorax but feebly convex, 

 oblong, slightly longer than wide, the parallel sides very feebly and 

 broadly arcuate, straight basally, the base broad, feebly arcuate, 

 even somewhat wider than the feebly sinuate apex; basal angles 

 slightly more than right, with their tips slightly blunt; sides nar- 

 rowly reflexed; surface smooth, the fovese broadly, feebly concave, 

 rather irregular, not prolonged; transverse impressions very nearly 

 obsolete, the stria fine, even, subentire; elytra oblong-oval, rnuch 

 more convex than the prothorax, three-fifths longer than wide, 

 twice the thoracic width, the rather strongly reflexed arcuate sides 

 more rounded basally, gradually sinuously oblique apically, the tips 

 narrowly rounded; striae rather fine, smooth, moderately deep and 

 sharply defined, coarse and deep at apex; intervals nearly flat, 

 slightly convex laterad and near tip; dorsal puncture single, on the 

 third interval near the second stria and slightly behind the middle, 

 there being no trace of any other; met-episterna barely longer than 

 wide; anterior tarsi (cf ) thick, subparallel, slightly grooved above, 

 the first three joints subequal in width, the fourth scarcely narrower 

 but more oval, slightly emarginate, second and third wider than long. 

 Length (cf ) 9.5 mm.; width 3.7 mm. Mexico (Guerrero), — Baron. 



*recticollis n. sp. 



The species described by Mr. Bates under the name Colpodes 

 rectilineus (Tr. Ent. Soc. Lond., 1891, p. 257) also evidently belongs 

 to this genus, similarly lacking the anterior superciliary seta as 

 well as the posterior seta at the thoracic sides, but, singularly 

 enough, the dorsal punctures of the elytra are described as three 

 in number and conspicuous; in recticollis there is no vestige of 

 any other than the single well marked puncture on each elytron 

 as described above. In rectilineus, also, the thoracic sides are 

 said to be sinuate basally and the length is given as ii.o mm., 

 showing that it is an evidently larger species; at the same time some 

 of these Baron specimens, from Guerrero, are included under 

 rectilineus by Bates, this being an oversight in my opinion. Mr. 

 Bates states that rectilineus is allied to sphodroides Chd., in the 

 cephalic and pronotal setse. The simply, moderately and sub- 

 symmetrically emarginate fourth tarsal joint, shows that these 

 species are not even closely allied to the Batesian Colpodes, from 

 which they also differ greatly in habitus. 



