CYMATODERA. 137 
19. Cymatodera undata. 
Cymatodera undata, Spin. Mon. i. p. 142°. 
Cymatodera marmorata, Spin. t. 9. fig. 4, nec Klug. 
Hab. Mexico}. 
Iam unable to identify this species. Spinola describes two males and one female, 
possibly of different species. ‘The figure referred to has the name changed, as is often 
the case in this work, in the Supplement, p. 123. C. marmorata, Klug, and C. undata, 
Spin., are cited as synonymous; but which specimen is figured, or how the identification 
was made, is left uncertain. 
20. Cymatodera vagemaculata. 
Cymatodera vagemaculata, Thoms. Mus. Scient. ii. p. 50°. 
Hab. Mexico}. 
Another uncertain species, although the peculiarly long apical joint of the antenne, 
referred to by Thomson, should make it easy to recognize it. I have seen nothing 
like it. 
21. Cymatodera valida. (Tab. VII. fig. 11.) 
Nigro-picea, nitida; capite magno, rugose et confluenter punctato; prothorace valde compresso, minus crebre 
leviter punctato; elytris ovatis, fortiter seriatim punctatis, seriebus fere integris; macula subbasali fasciis- 
que duabus testaceis, haud bene discretis ; antennis, palpis tarsisque rufis. Long. 11-13 millim. ¢ 9. 
Hab. Guatemaa, Duefias, San Gerdnimo (Champion). 
The figure is of a specimen from Dueiias. 
The species of this section have the elytra more or less oval, and wider behind than - 
at the base; some at least of them have no wings. C. valida is very nearly allied to 
C. grossa, the species which follows; and both are allied to C. undulata, Say (a species 
which occurs in the Southern United States, and perhaps in Mexico); but, besides the 
different punctuation of the thorax, the legs are darker and the femora more robust. 
The principal characters which separate C. valida from C. grossa are the finer punc- 
tuation of the thorax, and that the pygidial segment of the abdomen is not deeply cut 
out in either sex, but is truncate. The head is much wider than the thorax; the 
mandibles very iarge and powerful, with some oblong punctures on the outside of their 
bases. The labium and epistoma are red, and are invested with some few yellowish 
hairs ; the punctuation of the crown is not deep, but very close, especially at the base ; 
that of the thorax is distinct, but much less close, and not rugulose in any part, so that 
it is very much more smooth and shining than in C. grossa. ‘The elytra are usually 
rather cylindrical, narrowed at each extremity. ‘lhe underside of the body is dark 
pitchy brown, the apical margins of each abdominal segment being narrowly pale, and 
the ventral surface obsoletely punctured and wrinkled. ‘The pygidial plate is oblong, 
BIOL. CENTR.-AMER., Coleopt., Vol. ILI. Pt. 2, June 1882. T 
