412 HETEROMERA. 
others in their more depressed form, faint sculpture, flat elytral interstices, comparative 
small and transversely convex thorax, and feebly lobed tarsi; but I am unable 
satisfactorily to separate them from Allecula. 
1. Tarsi broadly lobed beneath ; form oblong ovate ; elytra rather deeply 
punctate-striate or with strie of coarse punctures. 
1. Allecula castaneipennis, (Tab. XVIII. fig. 16, 2.) 
Moderately elongate, brownish-piceous, the elytra more or less castaneous, rather dull, almost glabrous. Head 
very closely and moderately finely punctured; mandibles slender, deeply cleft; antenne (2) slender, 
ferruginous or fusco-ferruginous ; prothorax narrow, subcylindrical, nearly as long as broad, the sides 
almost straight from the middle to the base and gradually narrowing in front, the hind angles obtusely 
rectangular, the basal fovese small but rather deep, the surface very closely and coarsely punctured ; 
scutellum very finely and sparsely punctured ; elytra long, much wider than the prothorax, a little rounded 
at the sides but almost parallel in their basal half, with somewhat coarsely and closely punctured rather 
deep strie, the interstices convex, flatter on the basal half of the disc, and with widely scattered minute 
punctures; beneath more shining, sparsely and somewhat finely, the sides of the metasternum and the 
flanks of the prothorax very coarsely, punctured, the sides of the ventral segments exceedingly closely and — 
minutely punctured and very finely pubescent; legs fusco-ferruginous, thickly pubescent, the penultimate 
joint of the tarsi very broadly lobed beneath. 
Length 10-123 millim.; breadth 3-4 millim. ( 9.) 
Hab. Panama, Volcan de Chiriqui 3000 feet (Champion).—CoLomB1a, Bogota (coll. 
F. Bates); Amazons, Paré (H. W. Bates). 
Three female examples. This widely distributed insect has the penultimate joint of 
the tarsi very broadly lobed beneath, and is further distinguished by its coarsely and 
closely punctured, narrow, subcylindrical thorax, castaneous elytra, almost glabrous 
body, and other characters mentioned above. A. castaneipennis is allied to various 
undescribed Tropical-American species. 
2. Allecula rugicollis. (Tab. XVIII. figg. 17, 17,6.) 
Moderately elongate, dull brownish-piceous, the elytra usually lighter in tint, thickly clothed with short pubes- 
cence. Head very closely and rugulosely punctured; mandibles somewhat deeply cleft; antenne rather 
slender, brownish-piceous ; prothorax not much broader than long, very feebly convex, the sides a little 
rounded, widest at the middle, and almost straight or slightly narrowed behind, the basal foveze obsolete, 
the surface unimpressed, and very closely, uniformly, and rugulosely punctured ; scutellum very closely 
punctured ; elytra moderately long, with rather finely punctured strie, the punctures very closely packed, 
the interstices moderately convex, and very closely, finely, and subasperately punctured, the apices rounded 
in both sexes; beneath more shining, very closely and somewhat coarsely punctured, the sides of the 
metasternum and the flanks of the prothorax very coarsely so ; legs brownish-piceous. 
g. Anterior tibiz sinuous within. The lateral lobes of the last ventral segment very broadly spoon-shaped, 
rounded at the apex, shallowly emarginate within towards the base, and roughened; the central sheath 
acuminate. (Fig. 17a.) , 
Length 10-103 millim.; breadth 33-4 millim. (¢ @.) 
Hab. Mexico, Acapulco (Hége). 
Six examples. ‘This species is distinguished by its dull surface, rugulose head and 
thorax, slender antenne, &c.; it is not closely allied to any other enumerated here. 
