28 LONGICORNIA. 
outweigh the differences in the antenne; and I would propose to include Nephalius 
aestioides in Apospherion. 
6. Nephalius subpiceus. 
Spherion subpiceum, White, Cat. Col. Long. B. M. i. p. 109. 
Hab. Honporas (Dyson). 
MALLOCERA. 
Mallocera, Serv. Ann. Soc. Ent. Fr. 1833, p. 567. 
The genus is here restricted to the species closely allied to Serville’s type WU. glauca 
of South Brazil. Lacordaire (Gen. des Col. viii. p. 320) introduced alien elements 
into it. In its restricted limits it comprehends only some half dozen species, all 
Tropical-American, of which the following only is known from so far north as Central 
America :— 
1. Mallocera spinicollis. (Tab. IV. fig. 4.) 
Mallocera spinicollis, Bates, Trans. Ent. Soc. 1872, p. 779. 
Hab. Nicaragua, Chontales (Belt). 
PSYRASSA. 
Psyrassa, Pascoe, Ann. & Mag. Nat. Hist. ser. 3, xviii. p. 481. 
A genus limited to two or three species, inhabiting Central and North America. 
The spine of the third antennal joint is remarkably long; and this seems to be a good 
generic character. The carine of the antenne are inconspicuous, being placed on the 
side of the joints, as viewed from above. | 
1. Psyrassa basicornis. 
Psyrassa basicornis, Pascoe, loc. cit. 
Hab. Yucatan. 
2. Psyrassa castanea. 
Elongata, angusta, rufo-castanea, nitida, antennis pedibusque pallidioribus, pilis elongatis sparsis vestita ; capite 
thoraceque sparsissime punctatis ; elytris postice gradatim attenuatis, apice sinuatim truncatis angulis 
paullo productis sed non spinosis, subsparsim punctatis, apicem versus fere levibus; antennis g¢ quam 
corpus paullo longioribus, 2 multo brevioribus. 
Long. 54-7 lin. 
Hab. Mexico, Almolonga (Hége). 
More elongate than P. basicornis, and much more sparsely punctured, both on the 
thorax and on the basal portion of the elytra. The colour is uniform tawny-chestnut, 
with the antenne, legs, and palpi paler. The angles of the elytral truncature are 
rather more produced than in P. bastcornis, but are not spiniform as in P. unicolor 
(Haldem.), being broader or dentiform. 
