484 COLYDIIDE. 
9. Sosylus annectens, sp. n. 
Robustus, niger, sat nitidus, antennis extrorsum pedibusque piceis; prothorace minus subtiliter strigoso- 
punctato; elytris costatis, costa prima ad apicem extensa, intervallis rude substrigoso-sculpturatis. 
Long. 63 millim. 
Hab. Panama, Volcan de Chiriqui 3000 feet (Champion). 
Head densely rugose ; eyes prominent. Hpistome prolonged, its anterior angles acute 
and curved on to the underside of the head; it is canaliculate along the middle, and 
does not possess the rugose sculpture of the vertex. Thorax rather short, rounded at 
the sides and narrowed behind; the disc densely covered with a rather coarse strigose 
sculpture; a deeply impressed, transversely oblique line on each side near the base. 
Elytra with the coste very distinct, the first of them connected at the apex with the 
apical margin; the intervals broad, each bearing three lines, of which the median is 
quite irregular, being broken up into short strigosities; on the apical declivity the 
intervals are free from this sculpture. 
Only one specimen was obtained of this remarkable insect. No doubt it is a male, 
and it is not improbable that the structure of the epistome may be different in the 
female. 
10. Sosylus salvini, sp.n. (Tab. XV. fig. 14.) 
Major, nigerrimus, nitidus; prothorace parce punctato; elytris costatis, intervallis tristriatis. 
Long. 11 millim. 
Hab. Panama, Volcan de Chiriqui 3000 feet (Champion). 
Head short, shining, feebly longitudinally bi-impressed, sparingly punctate ; epistome 
short; eyes large and convex. Thorax moderately long, narrowed behind, very shining, 
black, remotely punctured. Elytra with the coste very distinct, the first not connected 
with the apical margin, but almost touching it; the intervals broad, each marked with 
three well-separated striz. 
We have received but one example of this fine insect. Prolonged reiterated efforts 
have quite failed to extend the antenna, and I think it possible that the basal joint is 
deprived of the usual freedom of motion, and that such movements as may be made 
usually take place by means of the articulation between the first'and second joints. 
11. Sosylus chontalensis, sp. n. 
Piceus, nitidus, prothorace subtiliter sat crebre punctato, angulis obtusis; elytris obtuse costatis, intervallis 
levigatis. 
Long. 63 millim. 
Hab. Nicaragua, Chontales (Belt). 
Epistome broad and short, front margin feebly bisinuate, angles distinct.. Head 
finely punctate, the punctures dense on the middle of the upper part. Thorax elongate, 
narrowed behind; hind angles obtuse, front angles quite rounded ; surface finely and 
