8 PSELAPHID A. 
remains quite distinct. The ninth and tenth joints of the antenne are transverse, but 
not excessively short; the terminal joint very thick and large. The fovea near the 
middle of the base of the thorax is large and distinct. The elytra have a well-marked 
sutural stria which is extremely deeply impressed at the base; and external to this 
stria, and separated therefrom by a raised space, another deep rather long impression 
which is not continued backwards as a stria. 
Though very similar to H. singularis this is a larger insect, readily distinguished by 
the broader head, the more widely separated antennary tubercles, and the long setosity 
of the tibie. The sexual distinctions are slight, and almost confined to a difference in 
the shape of the hind body, this latter being rather longer, with the under surface more 
curvate, and the middle of the ventral rings flattened, in the male. In each sex there 
is a fine pencil of hairs at the extremity of the hind tibia, and an extremely slight 
incurvation of the tibia itself near the apex. 
13. Hamotus parvipalpis. 
Rufo-niger, pedibus rufis; palpis testaceis, his articulo ultimo parum magno et graciliter subovali; elytris intra 
humeros breviter impressis. 
Long. 24 millim. 
Hab. Panama, Bugaba, Volcan de Chiriqui 2500 to 4000 feet (Champion). 
This species is closely allied to H. singularis, having a similar structure of the antenne 
and of the thoracic fover; it is, however, well distinguished by a number of characters, 
the most important of which is the smaller and more slender terminal joint of the 
maxillary palpi. The pubescence of the surface is darker than in the allied species ; 
the antenne are extremely thick, with the joints 4-10 strongly transverse, and the 
terminal joint very broad; the head is not broad, and the antennary tubercles, though 
not very broad, are well separated, so that the small fovea between them is quite 
definite. The thorax is smaller and more globose than in H. singularis. 
I have seen only two examples; unfortunately both are in a very decayed condition. 
14. Hamotus rostratus. | 
Piceus, elytris sanguineis, palpis pedibusque rufis, pube elongata minus dense vestitus ; antennis longioribus, 
articulis intermediis haud transversis ; capite gracili rostrato, vertice foveolis grandibus impresso ; palpis 
majoribus. 
Long. 3 millim. 
Hab. Panama, Bugaba (Champion). 
Antenne with the ninth and tenth joints elongate, intermediate in breadth between 
those preceding it and the terminal joint, this latter elongate, rather stout, not quite 
twice as long as broad. Palpi very large. Antennary tubercles convex, separated by 
a deep depression in which the frontal fovea is lost; the two fovee on the vertex large. 
Thorax subglobose, rather large ; the basal fovea only moderately large, filled with fine 
pubescence. Elytra red, with very elongate erect pubescence, the intrahumeral plica 
