LOBOPODA. 409 
slightly carinate in the middle, the sides of the depression very closely punctured; ventral segments 1~3 
very sharply and strongly carinate down the middle, 5 foveolate in the centre. The lateral lobes of the 
last ventral segment rather long and stout, a little curved towards the apex, the apices blunt; the central 
sheath compressed, widening outwardly and narrowed a little towards the end, the apical portion 
somewhat shovel-shaped, the apex rather broadly truncate and slightly hooked above. (Tab. XVIII. 
fig. 12.) 
Length 74-8 millim.; breadth 3-37 millim. (¢ 9.) 
Hab. Panama, Volcan de Chiriqui ( Champion). 
Five examples. This insect possesses very remarkable sexual characters. It is one 
of several allied forms inhabiting Central America. 
42. Lobopoda obsoleta. (Tab. XVIII. fig. 13.) 
Moderately elongate, blackish-bronze, moderately shining, glabrous. Head finely and rather sparsely punc- 
tured; eyes very large and approximate in the male; prothorax a little sinuate at the sides behind, the 
hind angles rectangular or subacute, the disc slightly transversely depressed in the middle before the base, 
the basal fovex rather deep, the surface finely and rather closely punctured, a narrow longitudinal space 
on the disc impunctate; elytra rather rapidly narrowing from about the basal third, with deep finely 
punctured striw, the striz still more finely punctured towards the suture, the interstices slightly convex 
and impunctate; beneath more shining, the ventral surface almost impunctate but with very shallow 
longitudinal wrinkles, the metasternum with a few fine scattered punctures in the middle and some 
shallow coarse ones at the sides, the fifth ventral segment unimpressed ; legs sparsely pilose, brownish- 
piceous, the tarsi lighter; antenna varying in colour from testaceous to piceo-ferruginous. 
g. Anterior tibise angularly widened on the inner side before the middle. The lateral lobes of the last ventral 
segment long, thin, and curved, rounded at the apex; the central sheath broad, the apical portion hori- 
zontal, somewhat spoon-shaped, and narrowing towards the apex, the extreme apex abruptly widening 
out on each side and truncate. (Fig. 13.) 
Length 8-83 millim.; breadth 3-3} millim. (<.) 
Hab. Muxico, Jalapa (Hoge); Guatsmata, Capetillo, Volcan de Atitlan (Champion). 
Three male examples. JL. obsoleta closely resembles LZ. cariniventris; it is, however, 
readily separated by the more finely punctured elytral striz (especially noticeable on 
the disc), the larger eyes, the much smoother metasternum, the ventral surface in the 
male not carinate or impressed, &c., as well as by the differently shaped cedeagus. 
43. Lobopoda glabrata. (Tab. XVIII. figg. 14, 14a, ¢.) 
Moderately elongate, black or brownish-black, shining, glabrous. Head with scattered fine punctures; eyes 
3. 
moderately large, narrowly separated in the male, more distant in the female; prothorax convex, sinuate 
at the sides behind, the hind angles rectangular or subacute, the disc with a shallow depression at the base 
between the deep fovese, the surface exceedingly finely and remotely punctured ; elytra moderately long, very 
gradually narrowed from a little below the base, rather more parallel in the female, with finely and somewhat 
remotely punctured very deep striz, the interstices convex, very strongly so towards the apex, and 
impunctate; beneath brownish-piceous, the ventral surface closely and moderately finely punctured, the 
metasternum very much more coarsely and sparsely so, the fifth ventral segment broadly and shallowly 
impressed in the middle in both sexes; legs sparsely pilose, brownish-piceous, the tarsi lighter; antenne 
piceo-ferruginous. 
Anterior tibie subangularly widened on the inner side before the middle. The lateral lobes of the last 
ventral segment moderately long, slender, inwardly curved, the apices bent downwards and slightly 
hooked ; the central sheath compressed, widening outwards, the apical portion somewhat spoon-shaped, 
BIOL. CENTR.-AMER., Coleopt., Vol. LV. Pt. 1, October 1888. 3 GG 
