CRYPTARCHA. 377 
7. Cryptarcha inequalis, sp.n. (Tab. XII. fig. 9.) 
Breviter suboblonga, posterius angustata, pubescens, fusco-ferruginea, antennis pedibusque testaceis, illarum 
clava nigricante; elytris crebre punctatis, singulo pubescentie perparum elevatis seriebus quinque. 
Long. 53-6 millim. 
Hab. Guatemata, San Isidro (Champion). 
Antenne with the ninth and tenth joints large, transverse, the terminal joint much 
smaller. Head very large, coarsely punctate, the epistome sinuate on each side; man- 
dibles very unequal, the right one elongate and abruptly bent, simple at the extremity, 
incrassate near the base. Thorax large, very convex transversely, strongly lobed in 
front, and with the base sinuate on each side; punctuation and pubescence like those 
of the head. Elytra moderately closely punctate, pubescent, the pubescence subseriate 
in its arrangement, and with five quite fine and regular lines of pubescence which are 
indistinct owing to being very slightly elevated. Pygidium densely punctate, but little 
exposed, rounded at the extremity. 
We have received four specimens of this species. I do not see any evident external 
sexual characters, but the colour varies from dark fuscescent to pale ferruginous. 
8. Cryptarcha brevidens, sp. n. (Tab. XII. fig. 10.) 
Breviter suboblonga, posterius angustata, pubescens, fusco-ferruginea, antennis pedibusque testaceis, illarum 
clava nigricante ; elytris crebre punctatis, seriebus pubescentibus egre discernendis. 
Long. 53-6 millim. 
Hab. Guatemata, San Gerénimo (Champion). 
Head large, the epistome not sinuate on each side, deeply, rather coarsely punctate ; 
mandibles quite short, similar, emarginate at the apex. Punctuation of the thorax 
rather more distant and finer than that of the head. LElytra rather elongate, moderately 
closely punctate and pubescent, the lines of pubescence difficult to distinguish. 
Pygidium nearly covered by the elytra, densely punctate, rounded at the apex. 
Two specimens. <A third example, from Duefas, is smaller, and may possibly belong 
to a closely allied species. 
Very similar to C. inequalis, from which it chiefly differs by the mandibular struc- 
ture, and by the shape of the sides of the head. ‘The lines of pubescence on the elytra 
are less distinct than in C. inequalis, but this is not important. Notwithstanding the 
differences between the two insects I should not be surprised if they prove to be the 
sexes of one species. Although found in different localities this is not of much 
importance, as the numbers procured are so small. 
9. Cryptarcha gentilis, sp. n. 
Breviter ovalis, posterius attenuata, fusca, antennis pedibusque testaceis, illarum clava nigricante ; pubescens, 
crebre punctata ; elytris seriebus punctorum pubescentizeque discretis. 
Long. 4 millim. 
Hab. Guatrmata, San Isidro (Champion). 
BIOL. CENTR.-AMER., Coleopt., Vol. II. Pt. 1, Apri 1891. 3 C* 
