380 HETEROMERA. 
prosternum subhorizontal, the apex convexly produced and received by the broadly and moderately deeply 
excavate mesosternum ; legs moderately long, rather coarsely but not very closely punctured, more or less 
seneous, the first joint of the posterior tarsi longer (in the male much longer) than the apical joint; the 
anterior tibie nearly straight, but with their inner edge a little sinuous, and the fifth ventral segment 
with a large semicircular impression in the middle behind (in the female merely flattened), in the 
male. 
Length 113-15 millim. ;. breadth 4-5 millim. (¢ 9.) 
Hab. Nicaragua (Sallé), Chontales (Belt, Janson). 
Numerous examples of both sexes. This is one of the large number of interesting 
species known only as yet from Nicaragua. The cylindrical shape, bright eneous 
surface, short subquadrate and finely margined thorax, and convex elytral interstices 
readily separate O. nicaragquensis from the other species here described. 
++ Elytra with interrupted longitudinal testaceous streaks. 
4, Otocerus interruptus. (Tab. XVI. fig. 21, @.) 
Elongate, a little convex, somewhat flattened above, greenish-zneous, rather dull. Head in front closely and 
somewhat coarsely punctured, behind exceedingly coarsely and rugosely so, shallowly longitudinally 
impressed between the eyes, the latter very large, convex, and approximate (separated only by a very 
narrow space); antenn (2) rather short, stout, subserrate within (the inner apical angle of each joint 
angularly produced) from the fourth joint, the latter nearly twice as long as and much wider than the 
third joint, joints 6-8 the longest and widest, subequal, 9 and 10 narrower than 8, and decreasing slightly 
in length and breadth, 11 rather longer than 10, bluntly and obliquely rounded at the apex, the joints dull 
black, a little lighter at the base ; prothorax rather flat, broad, strongly transverse, the sides immarginate, 
about equally, but very slightly, narrowing in front and behind, and armed a little before the middle 
with a strong blunt tooth, the base and apex slightly sinuate, the latter acutely margined throughout, 
the basal foves large and deep but irregular, the anterior angles laterally prominent, the hind angles 
subacute and outwardly directed, the disc broadly but irregularly canaliculate and irregularly depressed 
on each side, the entire surface uneven and exceedingly rugosely punctured; scutellum subtriangular, 
sparingly punctured, shining ; elytra moderately long, the disc broadly flattened towards the base, parallel 
in their basal third, thence rounded and converging to the apex, crenate-striate, the punctures approximate, 
coarse, and more transverse in shape towards the base, and outwards from the middle rapidly becoming 
very much finer and shallower, the interstices very strongly raised and convex (the first and second 
flatter) throughout, and very sparingly and minutely punctured, the surface greenish-sneous, shining, 
the third to the seventh interstices in part testaceous, the testaceous colour not extending to the base on 
the third and fourth interstices, and more or less interrupted on the others at and behind the middle; 
beneath reddish-brown, rather dull, almost glabrous, shallowly and sparingly but somewhat coarsely 
punctured, the sides of the metasternum and the flanks of the prothorax very coarsely so; legs rather 
long, very closely and roughly punctured, dull brownish-piceous, the femora and tibie at the base reddish ; 
the first joint of the hind tarsi very long, longer than the apical joint. 
Length 14 millim.; breadth 44 millim. ( 9.) 
Hab. Panama, Chiriqui (Zrétsch). 
This species will be readily identified from our figure; it has no near known ally, 
though an undescribed form from Cayenne in Mr. F. Bates’s collection slightly 
approaches it. 
