378 NITIDULIDZ. 
Mandibles very short, similar, each deeply notched at the apex. Head moderately 
closely and deeply punctate, the sides subsinuate. Thorax rather short, moderately 
coarsely, not closely punctate, almost straight at the base in the middle. Elytra some- 
what coarsely punctate, and with distinct series of fine punctures, each series bearing a 
fine line of pubescence, which is only very slightly elevated ; their apices just perceptibly 
sinuate. 
Two specimens. 
This insect is rather larger and broader than the European C. strigata, and has the 
thorax less truncate at the base in the middle. 
10. Cryptarcha subtilis, sp.n. (Tab. XII. fig. 11.) 
Breviter ovalis, convexa, pubescens, crebrius subtiliusque punctata, fusca, sat nitida ; elytris pubescentia seriata 
conspicua ; antennis pedibusque rufis, illarum clava nigra. 
Long. 3-3? millim. 
Hab. GuatEMaLa, Chiacam (Champion). 
Mandibles short, similar, each notched at the tip. Head rather closely and finely 
punctate, the sides but little sinuate. Thorax closely and finely punctate, the base 
straight, except close to the hind angle, where there is a short sinuosity. Elytra with 
five lines of fine pubescence, the fourth from the suture arcuate, and between it and 
the fifth near the base there is interposed an additional, shorter and more obscure line 
of pubescence; surface very finely punctate and very delicately pubescent. Pygidium 
almost entirely covered by the elytra. Prosternal process very broad, emarginate behind. 
Mr. Champion secured a series of about twelve examples of this distinct Cryptarcha. 
I do not detect any sexual differences, and very little variation except in size. 
11. Cryptarcha gibbula, sp. n. 
Breviter ovalis, convexa, nigra, subnitida, opalescenti-nitens, minus pubescens, punctulata; pedibus piceis, 
tarsis dilutioribus ; antennis testaceis, clava nigra. 
Long. 5 millim. 
Hab. Mexico, Jalapa (fHége); GuatemMaa, Zapote (Champion). 
Mandibles short, similar. Head coarsely punctate, the sides sinuate. Thorax large, 
rather sparingly, but not finely, punctate, the base feebly sinuate. Klytra moderately 
coarsely punctate, but only feebly pubescent; amongst the general punctuation there 
may be distinguished five series of punctures, these being not pubescent and differing 
only from the other punctures by their perfectly serial arrangement. Pygidium almost 
entirely covered. 
This species may be recognized by the black colour, and by the pubescence of the 
upper surface diminished to an unusual extent. Three examples have been received, 
and I do not notice any sexual distinctions. 
