274 NITIDULIDZ. 
very minute distant punctures. Scutellum large, shining, and impunctate. Elytra with 
series of distant fine punctures. Hind body more coarsely punctate. 
Three specimens, all females, have been procured of this distinct Colastus. Except 
in the polished surface and absence of pubescence, it seems rather near to C. macro- 
pterus, var. sordidus. The example found at Tolé is yellow in colour, but belongs, I 
have no doubt, to the same species. 
11. Colastus dispar. 
Colastus dispar, Murray, Trans. Linn. Soc. xxiv. p. 263'. 
Hab. Mexico, Toxpam }, Puebla, Cordova ( Sallé), Jalapa, Mirador (Hoge). 
This species is easily recognized by the comparatively elongate form, the distinct 
pubescence, obtuse hind angles of the thorax, and large size of the terminal two 
segments of the hind body; in each sex the lateral margins of the last ventral plate 
are strongly denticulate. The colour of the elytra varies as in many other species of 
the genus. Five specimens. 
12. Colastus setiger, sp.n. (Tab. VIII. fig. 14, 3.) 
Depressus, nigerrimus, antennarum basi pedibusque piceis, elytris ex parte majore rufis; minus subtiliter 
pubescens; prothorace crebrius fortiter profundeque punctato; elytris seriatim crebre sat subtiliter 
punctatis. 
Long. 3j-4 millim. 
Hab. GuaTEMALA, San Gerénimo, San Joaquin ( Champion). 
Head coarsely, deeply, and closely punctate. Thorax with the base feebly bisinuate, 
the hind angles scarcely at all produced backwards, very nearly rectangular, the 
marginal ciliz long, the surface remarkably coarsely and deeply, rather closely punctate, 
the disc not deplanate. Elytra in greater part red, the margins black, and a triangular 
space at the base black, the suture more or less blackish. Hind body very coarsely 
punctate, the marginal hairs elongate. The male has the apex of the last dorsal plate 
compressed and subplicate in the middle at the extremity; the last ventral plate 
bisinuate behind, with prominent denticles. . 
We have received seven specimens of this insect, which is quite distinct from any 
other of our species, but is closely allied to C. ater, Murray; the latter, however, is 
entirely black, has the elytra more coarsely and deeply punctate, and the pygidium 
of the male more elongate and less punctate. In our figure of C. setiger the supple- 
mentary dorsal segment of the male is extruded. 
13. Colastus angularis, sp. n. 
Perdepressus, fortiter punctatus, pubescens, subnitidus, colore instabili, flavo-ferrugineus, corpore elytrorumque 
marginibus plus minusve infuscatis; prothoracis margine basali ad angulos posteriores minute prominulo, 
Long. 3-4 millim. 
Hab. GuatemaLa, San Gerénimo (Champion). 
