138 MALACODERMATA. 
smooth, and squarely truncate at its apex; the genital of the male projects as a bifid 
organ, between the two points of which is a mucro, probably the penis. In specimens 
which I think to be the females, the apical dorsal segment is obconic truncate, the 
ventral one very similar. 
22. Cymatodera grossa. 
Nigro-picea, subopaca ; capite sat magno, cum prothorace creberrime subrugose punctato ; elytris basi indeter- 
minate, fascia lata mediana, alteraque subapicali interrupta distincte testaceis. Long. 10-13 millim. ¢. 
Hab. Mexico, Jalapa (Hoge). 
It will not be necessary to repeat the characters pointed out in which this differs 
from C. valida; the pygidial plate is wide, and angularly cut out at the apex; the 
ventral corresponding plate has its sides produced and the middle irregular; the fifth 
ventral is arcuately emarginate, and bears a fine golden cilium in the centre of its 
margin. The segments are sparsely punctured, the apex more thickly. 
Two specimens are all that I have seen. 
23. Cymatodera angustata. 
Cymatodera angustata, Spin. Mon. i. p. 149', t. 7. fig. 1? 
Cymatodera angustata, Leconte, New Spec. N. A. Col. p. 96°? 
Cymatodera ovipennis et pilosella, Lec. loc. cit. *? 
Hab. Unirep States ?; Catirornta !.—Mexico, Capulalpam (Sad/é). 
The difficulty of determining the species of this genus is so great that I doubt the 
correctness of the synonymy given above, as adopted by the American describers. The 
single specimen which I refer to this agrees with C. pilosella in having the series of 
“punctures continued to the apex; the sides of the thorax are strongly bisinuate; the 
anterior constriction is not so great as in a specimen of “angustata” in my own 
collection ; and the elytra are very pale, the oblong punctures (and sometimes the stria 
between for a short distance) are fuscous. ‘The head and thorax very finely and closely 
punctured, the disk with the usual fine wrinkles. It appears to be wingless. 
24. Cymatodera depauperata. 
Testacea, depressa, elytris postice paulo ampliatis; capite crebre punctato nigro, basi et ore rufo ; thorace rufo 
lateribus nigris, subtilissime obsolete punctato ; elytris pallidioribus basi obsolete striato-punctatis, punctis 
majoribus interspersis, fasciis et vittis indistinctis variegatis; corpore aptero. Long. 5-74 millim. 
Hab. GuateMaLa, Totonicapam, Quiche Mountains, Calderas, Volcan de Agua 
(Champion). 
The head is nearly entirely black in many examples, closely subrugosely punctured ; 
the antenne rather long, being half or more of the length of the body, dark fuscous, 
with the apical joint half as long again as the one preceding, and acuminate. The 
thorax is not wider in front than behind, the sides strongly sinuate and almost tuber- 
