132 HETEROMERA. 
** Anterous Species. 
21, Blapstinus obliteratus. 
Oblong ovate, rather convex, black, opaque, almost glabrous, 
blackish hairs. Head coarsely and not very closely punctured, the epistoma somewhat deeply 
prothorax transverse, widest about the middle, scarcely broader at the base than at the apex, the sides 
rounded and almost straight towards the base, anterior angles obtuse, hind angles subrectangular, apex 
broadly but feebly emarginate, base feebly bisinuate and without any trace of the usual shallow fovea on 
each side, coarsely but not closely punctured, the punctures not confluent ; scutellum finely and closely 
punctured ; elytra regularly striate, the strie rather deeply impressed and finely and not very closely 
punctured, the interstices feebly convex, and very finely, shallowly, and sparingly punctured ; legs black ; 
apterous. 
Length 6 millim. ( 9.) 
Hab. Panama, Chiriqui (£ib0e). 
One example. Of a different facies from any species of the genus known to me ; the 
thorax comparatively very coarsely, equally, but not very closely punctured ; the inter- 
stices of the elytra very finely and sparingly punctate. 
very sparingly clothed with fine recumbent 
emarginate ; 
NOTIBIUS. 
Notibius, Leconte, Ann. Lyc. New York, v. p. 145 (1852) ; Class. Col. N. A. p. 227; Horn, Rev. 
Ten. N. A. p. 355; Lec. & Horn, Class. Col. N. A. p. 379. 
Six species of this genus are known, all from the desert regions of California and 
Arizona; we now add two others from Central Mexico. 
1. Notibius rugipes. 
Oblong ovate, convex, dull black, when fresh sparingly clothed with dark brownish pubescence. Head very 
closely and rather coarsely punctured, the punctures more or less longitudinally confluent ; prothorax 
convex, broader than long, the sides rounded, narrowed at base and apex, and narrowly margined, widest 
at or a little behind the middle, apex very feebly emarginate, base subtruncate, all the angles strongly 
obtuse and not prominent, very closely and finely punctured, the punctures longitudinally confluent 
towards the sides, the disc sometimes feebly impressed behind the middle, not closely embracing the 
elytra; scutellum indistinct ; elytra convex, slightly rounded at the sides, widest before the middle, the 
humeri obsolete and broadly and obliquely rounded (not meeting the hind angles of the prothorax), regu- 
larly, finely, and closely punctate-striate, the interstices flat, distinctly, sparingly, and rather coarsely 
punctured, the punctures very little finer than those of the strie ; legs black, coarsely punctured, anterior 
tibiee similar in both sexes, in the male rather longer and stouter (the femora especially), and the posterior 
tibie: on the inner side from the middle to the apex clothed with longish fulvous hairs. Beneath slightly 
shining, coarsely muricate-punctate, the last ventral segment in the male transversely excavate ; intercoxal 
process broadly truncate at the apex. 
Length 6-643 millim. (¢ 9.) 
Hab. Mexico (coll. F. Bates), Puebla (Sallé), Tehuacan (Hoge). 
Sent in some numbers by Herr Hoge. Of the size and general form of YW. opacus, 
Lec., and WV. sulcatus, Lec., but not very nearly allied to any described species. 
2. Notibius affinis. (Tab. VI. fig. 11, ¢.) 
Allied to WN. rugipes, and differing as follows:—The head and prothorax more closely and more confluently 
