COLEOPTERA. 
65 
This species and Pt. depressus , Jekel, are the only ones in which the 
males have the joints of the antennas tetragonal and longitudinally canali¬ 
culate along each side, but here they are all nearly equal in breadth, and 
but slightly clavate at the top, whilst in that species the apical joints 
of the funiculus are much more slender than the basal ones, and all are sub- 
globose and strongly clavate. 
Notwithstanding their connexion from this shape of the antennae in 
the males, unusual in this genus, the remaining parts of their bodies are so 
different (Pt. depressus exactly resembling in its coloration, depression and 
callosities the species of the group of Pt. elongatus), that I have thought 
it more natural to consider this sexual character as secondary, in the 
subdivision of the genus. 
J consider that the Macroeepholus cinereus of Olivier, Ent. iv. 80, 
p. 4, No. 2, tab. i., fig. 2, a, b , is not a Ptychoderes, but probably a Phlceo- 
tragus: the species is quite unknown to me, as well as the Macr. variegatus 
of the same author (t. iv. 80, p. 4, No. 1, tab. i. fig. 1), which resembles 
none of the generic forms I have hitherto seen. The former is probably 
from India, the latter is of unknown locality. 
II. Genus HYPSELOTROPIS, Jekel 
To the differential characters of this genus above given, I have to 
add the following :— 
Antennce tenuiusculae, in $ basin, in $ medium thoracis paullo super- 
antes ; articulis versus apicem sensim subconico-ampliatis, apice haud 
clavatis, 3o funiculi reliquis paullo longiore; clava valde elongata, articulo 
ultimo angusto, elongaio, tertio funiculi longiore, recto, versus apicem 
acute angustato. 
Thorax ut in Ptycliodere formatus et in disco impressus, sed carina 
postica aliter constructa, h. e. disco ante latera magis oblique antrorsum 
excurrente, versus apicem evidenter infra paginam superam rectim ducta, 
lateribus nullo rnodo sinuatis. 
Elytra ut in latioribus speciebus ejusdem generis abbreviata, h. e. lati- 
tudine haud duplo longiora, supra modice deplanata, posterius circulariter 
oblique declivia, callo ante-apicali aut obsoleto aut nullo. 
Pygidium semiovalum. 
K 
