124 PARNIDA. 
fifteen individuals submitted to special examination for the purpose of detecting some 
sexual distinction. 
The occurrence of the species in Mexico is open to doubt, as the single individual 
on which the record is based does not quite accord with the specimens from Guatemala ; 
but it is so extremely similar that it could not be treated as a distinct species without 
evidence of its slight distinguishing characters being constant. 
2. Parnus mexicanus. 
Elongato-ovalis, parum convexus, niger, subopacus, pube fusca brevissima setulisque elongatis erectis vestitus ; 
pedibus piceis ; elytris parce sat fortiter punctatis. 
Long. 17, lat. 7 lin. 
Mas tarsis anterioribus subtus serratis, articulo tertio acuto, quarto sat longe dentato, quinto in medio emarginato. 
Hab. Mexico, Jalapa (Hége), Cordova (Sallé). 
This species is extremely similar to P. pusillus; but it has the second joint of the 
antenna only very slightly produced externally, and the erect hairs of the upper surface 
are a little longer, and the punctuation slightly more distinct. 
Of the six individuals before me, five are males—that is, if I am correct in regarding 
the peculiar structure of the front tarsi as indicative of that sex. 
3. Parnus punctipennis. 
Elongato-ovalis, parum convexus, niger, pube fusca brevissima parum dense vestitus cumque setulis erectis 
elongatis; pedibus piceis ; elytris fortiter et irregulariter punctatis, punctatura ad apicem obsoleta. 
Long. 24, lat. Z lin. 
Hab. GuaTemata; Panama, Bugaba 800 to 1500 feet (Champion). 
This species, again, is very closely allied to P. pusillus; but its individuals are of 
larger stature, and have a coarser punctuation on the elytra, and the second joint of 
the antenna is extremely little-produced externally. I have only four individuals 
before me; and one of them has all the tarsi fringed beneath with long pallid hairs, 
most conspicuous on the posterior feet: this may probably prove to be a character of 
the male. 
4, Parnus detritus. 
Elongato-ovalis, parum convexus, niger, sat nitidus, setulis erectis dense vestitus, in elytris fere absque pube 
tenuissima, pedibus rufis; elytris versus basin sparsim, haud fortiter punctatis. 
Long. 14, lat. ? lin. 
Hab. Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion). 
This species differs from P. pusillus, to which, however, it is extremely similar, by 
the fact that the very fine clothing of the elytra is so much reduced that the elytra are 
shining, the upright longer pubescence remaining well developed. The thorax is 
rather more closely and coarsely punctate than are the wing-cases ; these latter, how- 
