384 NITIDULIDA. 
24, Cryptarcha elongata, sp.n. (Tab. XII. fig. 17.) 
Cryptarcha elongata, Reitter, Verh. Ver. Brinn, xii. 1, p. 143°. 
Oblonga, subdepressa, picea, subtilissime pubescens, crebrius punctata; corpore subtus, antennis pedibusque 
rufis, antennarum clava picea. 
Long. 63 millim. 
Hab. Mexico (mus. Vindod.1), Guanajuato (Sallé), Esperanza (Hége). 
Head large, moderately closely and coarsely punctate, shining. Thorax strongly 
transverse, nearly straight at the base, evenly, moderately coarsely and closely punctate, 
very minutely pubescent. Scutellum finely punctate. LElytra elongate, rather flat, 
moderately closely punctate, the punctuation subseriate, and including some indistinct 
distant series of punctures differing very little from the other punctuation. Pygidium 
exposed, closely and finely punctate. Male with the apical portion of the right 
mandible slightly more elongate than it is in the female. 
This species is quite different from any other Cryptarcha, and I have no doubt that it 
is generically distinct therefrom ; but as 1 have not discovered any salient character to 
distinguish it, I must place it at present as an aberrant member of the genus. 
The following species I have not been able to identify with any Cryptarcha we have 
received :— 
25. Oryptarcha fusca. 
Cryptarcha fusca, Er. in Germar’s Zeitschr. iv. p. 856'; Reitter, Verh. Ver. Briinn, xii. 1, p. 146’. 
Hab. Mexico *?. 
This, having the antennal club concolorous, probably belongs to group § 2 B**, but 
must be larger than any insect we have obtained of that group. In the collection at 
the British Museum a specimen of C. guatemalena has been determined by Murray as 
C. fusca, Er., but this is certainly a mistake. 
26. Cryptarcha aclypta. 
Cryptarcha aclypta, Reitter, Verh. Ver. Briinn, xii. 1, p. 142°. 
Hab. Muxico (mus. Vindod.'). 
I think this must certainly be a species of which we have not received an example, 
and possibly near C. plena; it is said to have punctate-striate elytra, and no mention 
is made of any sculpture on the interstices. 
27. Cryptarcha clavata. 
Cryptarcha clavata, Reitter, Verh. Ver. Briinn, xii. 1, p. 144°. 
Hab. Mexico (mus. Vindob. 1). 
