382 NITIDULIDZ. 
** Club of the antenne quite pallid. 
The club is not so large as in the species of Section *, and the apical joint is not so 
broad; but its colour being quite pallid the insects placed in this Section may be 
readily recognized as belonging here. They are all very small and have lost the 
appearance characteristic of the other divisions of the genus. 
19. Cryptarcha thalycroides. 
Cryptarcha thalycroides, Reitter, Verh. Ver. Briinn, xii. 1, p. 146°. 
Hab. Mexico (mus. Vindob. 1), Jalapa (Hége), Guanajuato (Sallé); GUATEMALA, near 
the city, Duefias (Champion). 
Parvula, oblongo-ovalis, sat convexa, testaceo-ferruginea, pubescens, crebrius punctata ; elytris crebrius sub- 
seriatim punctatis. 
Long. 3 millim. 
Var. lateralis ; metasterno elytrisque anterius ad latera fuscescentibus. 
Hab. Guatemata, near the city, Capetillo, Zapote (Champion). 
Reitter states! that in Mexico C. thalycroides varies in colour; this | am not ina 
position to speak about, as we have received only two or three Mexican examples of 
the species. We have eight specimens from Guatemala, and—accepting them all as 
one species, though as to this Iam by no means sure—there is a decided variation of 
colour, though not corresponding to what Reitter describes as existing in Mexican 
examples; the fuscescence of the wing-cases, when present, being in the Guatemalan 
specimens placed at the shoulder, whereas Reitter says that in the Mexican variety it 
occurs at the middle of the side. 
20. Cryptarcha comma, sp. n. 
Oblongo-ovalis, sat convexa, ferruginea, prosterno apice, pectore scutelloque nigris; pubescens, crebrius punc- 
tata; elytris crebrius subseriatim punctatis. 
Long. 3-3} millim. 
Hab. Mexico, Guanajuato, Puebla (Sailé), Chilpancingo in Guerrero 4600 feet 
(HI. H. Smith). 
Although doubtless extremely close to C. thalycroides, yet the constancy of the colour 
in the five examples of C. comma before me leads me to think that they are distinct 
from any of the varieties I have seen of C. thalycroides. ‘The prosternal process, the 
mesosternum, and metasternum are quite black. On the upper surface the scutellum 
only is black. In other respects this insect greatly resembles C. thalycroides, though it 
has the club of the antenne slightly larger. 
