376 NITIDULID. 
arcuate. ‘Thorax elongate, moderately coarsely and closely punctate, the base bisinuate. 
Elytra not shining, with fine series of punctures and with a subseriate interstitial 
punctuation ; the pubescence equal, that of the series being not more raised than that 
of the interstices. Pygidium truncate behind, in the female deeply impressed in 
the middle posteriorly. 
Three specimens. 
5. Cryptarcha furcata, sp. n. 
Suboblonga, sat convexa, punctata, pubescens, ferruginea, antennis pedibusque testaceis, illarum clava nigra ; 
elytris seriatim punctatis, interstitiis punctatis. . 
Long. 443 millim. 
Hab. GUATEMALA, Zapote (Champion). 
Antenne with rather large club ; mandibles rather short, similar, toothed above just 
before the extremity. Head rather small, sparingly but deeply punctate, with a single 
gentle concave curve on each side. Thorax somewhat long, moderately closely and 
coarsely punctate, not quite dull, strongly pubescent. Elytra rather long, with the 
serial punctuation quite distinct, and with a very distinct interstitial punctuation ; the 
pubescence is subseriate in its arrangement, and some more distinct series of pube- 
scence can be just distinguished. Pygidium much exposed, quite truncate at the apex, 
but with some sete at each angle, thus giving it the appearance of being emarginate. 
Two examples; these were placed amongst the duplicates of C. plena, to which the 
species bears a great superficial resemblance, although quite distinct by the structure of 
the pygidium. 
6. Cryptarcha pygidialis. 
Cryptarcha pygidialis, Reitter, Verh. Ver. Briinn, xiii. Abhandl. p. 117". 
Hab. Mexico }. 
This species I have no doubt is very near to C. longidens and C. guatemalena, but 
the details of which Reitter’s description is made do not agree satisfactorily with our 
species. The Austrian savant states that the angles of the pygidium are “ utrinque in 
dentem producto”: this probably refers to the ciliz at each angle which give rise in 
the species of this group to an appearance of that sort. 
§ 2. Pygidium rounded or subacuminate at the extrenuty. 
A. Club of the antenne elongate and laxly articulated, the terminal joint 
narrower than the tenth. 
The club of the antenne in these species is dark in colour, the tip of the terminal 
joint being usually paler. | | 
