122 PARNIDA. 
Thorax considerably shorter than broad, gently curved at the sides, but not sinuate ; 
hind angles rectangular, not produced backwards; the surface without punctuation, 
but evenly covered with fine granules. Elytra very dull, but without tomentum, 
covered with fine granules like the thorax, the sutural interstices not at all different 
in sculpture or clothing from the external ones. The series of punctures near the 
suture are rather indistinct, and externally are quite obsolete. 
Although this insect has much the appearance of an E/mis, 1 am unable to detect, 
in the single exponent at my disposal, any character by which it may be distinguished 
from Dryops, with which it agrees in the structure of the sterna, of the antenne, and 
of the front coxe. 
PELONOMUS. 
Pelonomus, Erichson, Nat. Ins. Deutsch. iti. p. 510, note. 
This is a very distinct genus, peculiar to the New World, where it extends from 
the Southern States of North America to Brazil, and includes the Antilles in its range. 
At present only five species belonging to it are known. 
1. Pelonomus obscurus. 
Pelonomus obscurus, Lec. Proc. Ac. Phil. 1852, p. 42'; Horn, Trans. Am. Ent. Soc. 1870, p. 31’. 
Hab. Norru America !, Southern and Western States ?.—Muexico, Cordova (Sal/é) ; 
GuatEeMALA, Champerico (Champion). 
Although this species is widely distributed, it is apparently rare, and I have been 
able to examine but few individuals. The four specimens from Cordova show that the. 
species displays some important sexual differences, the penultimate joint of the maxil-. 
lary palpus being in the male so elongate as nearly to equal in length the terminal 
joint. The middle tibie in this sex are strongly incurved at the extremity, and the 
third and fourth ventral segments much abbreviated in the middle, the terminal 
segment being correspondingly increased in size; in the female the penultimate joint 
of the palpus is so much shorter that it is only about one fourth the length of the 
terminal joint. 
2. Pelonomus palpalis. 
Oblongus, elongatus, nigro-fuscus, dense subtiliter punctatus, pube parum elongata vestitus; pedibus sat 
robustis, tibiis et tarsis ferrugineis ; palparum maxillarium articulo ultimo quam penultimus duplo longiore. 
Long. 23, lat. 1 lin. 
Hab. Panama, David (Champion). 
I have seen but two individuals of this species, and am uncertain as to their sex ; 
but as they agree with neither the male nor the female of P. odscurus, it is clear they 
are a different species. The maxillary palpi are of about the same length as they are 
