MAY, 1910. NOTES ON SOME CLERID.E WOLCOTT. 363 



color. Cyanipennis Klug is the type of Chevrolat's genus Pcecilochroa, 

 but it differs from the typical form only by being blue instead of 

 black, the thorax being red with the basal margin narrowly and the 

 apical margin broadly blue, and the elytra are a somewhat lighter 

 shade of blue than the other parts. A specimen of the blue form from 

 Texas has the coloration as usual, except that the sutural margin is 

 narrowly but distinctly green; forms are known, however, in which 

 the elytra are green with the prothorax entirely blue. 



Placopterus 1 gen. nov. 



Eyes emarginate; labrum emarginate; maxillary palpi cylindrical; 

 labial palpi dilated, securiform; tarsi distincly five-jointed, claws den- 

 tate near base; antennae slender, hairy, eleven-jointed, joints of funi- 

 cle short, subequal, club distinct, rather lax, three-jointed; tho- 

 rax short, strongly convex; body cylindrical. 



A genus rendered necessary for the reception of Pcecilochroa 

 plumbea Gorh., which is left without generic standing as a result of 

 sinking the genus Pcecilochroa Chevr. P. frontalis Gorh. from Guate- 

 mala, P. varia Gorh. and P. rufipes Schklg. from Mexico, are also 

 provisionally referred to this genus. 



Clerosoma 2 gen. nov. 



Eyes distinctly emarginate; labrum emarginate; maxillary palpi 

 subcylindrical ; labial palpi strongly dilated; tarsi five-jointed, claws 

 strongly toothed at base; antennas rather stout, eleven-jointed, last 

 three joints only slightly larger than preceding joints. 



This genus is proposed to receive Poecilochroa (Colyphus] gracilis 

 Gorh., a species of Panama. Its affinities are with Cleronomus, but 

 the fades is quite different, the elytra being very elongate and 

 parallel. The antennae are longer than the head and thorax and almost 

 clubbed at their apices, the last three joints being only slightly larger 

 than the preceding ones; the tenth joint is, however, distinctly wider 

 than the ninth, and also larger than the short terminal joint. 



Thaneroclerus girodi Chevrolat. 



Thaneroclerus Girodi Chevr., Bull. Soc. Ent. France, ser. 5, x, 

 1880, p. 31. 



Two examples of this Cuban species were found and presented to 

 the writer by Mr. Alexander Colletti. The specimens were found 



i TrAtt-j 7r/Ky } lamina; Trr:/'" 1 ', a/a. 



-Clerus; aCoti.a ) corpus. 



