296 MEMOIRS ON THE COLEOPTERA 



out with very small specks of whitish tomentum; the anterior tibiae 

 of the male have a rather distinct obtuse vestige of one external 

 tooth. The antennal club is distinctly longer than the entire stem, 

 being a little longer and thinner than in the polished black albopictus 

 VdeP. 



*Cotinis mutabilis ssp. ovicornuta nov. Similar to mutabilis and deep 

 opaque olive-green throughout above, the head and under surface polished 

 greenish-bronze; form more elongate and larger in size; head (9 ) a little 

 larger, two-fifths as wide as the prothorax, the cephalic process nearly 

 similar but more inclined upward, gradually slightly broader, the apex 

 truncate; clypeal horn of peculiar form, large, broad, with parallel arcuate 

 sides, the apex truncate medially, with very broadly rounded angles, the 

 base constricted; prothorax as in mutabilis but with a narrower basal 

 lobe; elytra similarly very slightly narrowed from the base but rather more 

 elongate; pygidium with deep loose and transversely interlacing grooves, 

 finer apically, the sparse hairs coarse and conspicuous basally; under 

 surface as in mutabilis, the apical part of the sternal process rather shorter 

 and more dilated; anterior tibiae stout, tridentate; hind tarsi thick, com- 

 pressed, slightly shorter than the tibiae. Length ( 9 ) 30 mm.; width 

 17.7 mm. Honduras (San Pedro Sula). 



It would be interesting to know approximately the degree of 

 constancy of the very exceptional outline of the clypeal horn, but, 

 even if an individual aberration in the type here described, the body 

 is larger and more elongate than in mutabilis. 



*Cotinis capito n. sp. Rather stout, subrhomboidal, moderately convex, 

 opaque and uniform brownish-black above, the head shining, the under 

 surface polished, deep rufo-piceous, the hind femora also piceous, the 

 middle of the sterna black; head much larger than usual, more than 

 two-fifths as wide as the prothorax, the ridge sloping upward, gradually 

 expanding toward the truncate apex, the clypeal horn large, higher than 

 wide, gradually expanding from base to the broadly truncate apex, the 

 strut-like ridge posteriorly from it base strongly elevated; antennal club 

 barely longer than the preceding six joints; prothorax nearly as in atrata 

 but rather broader; elytra also as in atrata but less deep black and with 

 the feeble dorsal ridges behind the middle more evident, without trace of 

 punctures; pygidium shining, blackish, gradually rufescent basally, the 

 wavy incised lines everywhere unusually close-set and interlacing, the 

 sparse hairs visible basally very short; anterior tibiae (cf ) rather stout, 

 tridentate, the upper tooth very small but acute and at a longer distance 

 from the second than the latter is from the third; hind tarsi moderately 

 thick and compressed, barely as long as the tibiae. Length (cf) 27.5 mm. ; 

 width 15.4 mm. Mexico (Tapachula). 



The narrow impression along the middle of the abdomen in the 

 type and the unequally spaced teeth of the anterior tibiae, indicate 



