RHATHYMOSCELIS.—RHINOTRAGUS. 4l 
RHATHYMOSCELIS. 
Rhathymoscelis, Thomson, Class. Long. p. 161. 
The following is the only species described of this genus, and is unknown to me:— 
_ 1. Rhathymoscelis haldemani. 
Rhathymoscelis Haldemanii, Thoms. Class. Long. p. 9. 
Hab. Mexico (Sallé). 
OXYCOLEUS. 
Ozycoleus, Lacordaire, Gen. Col. viii. p. 484. 
A curious genus of the Molorchina group, with abbreviated triangular elytra. It is 
allied to the European and North-American Callimoxys, and is scarcely distinguishable 
from Merioneda (Pascoe) of the Malay Archipelago and Malacca. Stenoptrellus 
(Bates) from the Amazons, published a year after Oxycoleus, is evidently congeneric. 
1. Oxycoleus clavipes. 
Oxycoleus clavipes, Lacordaire, Gen. Col. viii. p. 485, note; Atlas, pl. 90. f. 5. 
Hab. Mexico, Oaxaca. 
RHINOTRAGUS. 
Rhinotragus, Germar, Ins. Spec. Nov. p. 513. 
Three or four species of true Khinotragi have been described, all from Tropical 
South America. The following is the first made known from Central America; and 
it is curious that it resembles closely a South-Brazilian species. 
1. Rhinotragus longicollis. | 
Rhinotragus apicalis, Bates, Trans. Ent. Soc. 1872, p. 183 (nec Guérin). 
Modice elongatus, glaber, flavus, partibus oris, antennis, lineolis duabus discoidalibus thoracis, apiceque 
elytrorum nigris; antennis pedibusque nigris, femoribus annulo fulvo; corpore subtus flavo, metasterno 
postice abdominisque segmentis tribus medianis nigro-fasciatis ; thorace subelongato, medio vix rotundato, 
antice angustato posticeque vix strangulato, supra grosse punctato, callis tribus levibus; elytris parallelis, 
planis, apice truncatis angulisque acutis, grosse crebre punctatis. 
Long. 6 lin. 
Hab. Nicaragua, Chontales (Belt). 
Although agreeing with Guérin’s description of his 2. apicalis, from Bolivia, as far 
as it goes, I doubt the probability of this being the same as his species, as Guérin makes 
no allusion to the distinguishing character afforded by the elongated and rather narrow 
thorax. The above description will suffice to distinguish FR. longicollis from R. 
dorsiger, and probably from &. apicalis, if as I suspect, the thorax is of similar form 
in these two southern species. 
BIOL. CENT.-AMER., Coleopt., Vol. V., April 1880. g 
