APION, 59 
Rostrum about as long as the head and thorax, moderately stout, deflexed, a little 
incrassate at the insertion of the antenna, slightly narrowed at the tip; eyes small, not 
prominent, the space between them rather narrow, bearing two or three raised lines; 
antenne short, inserted a little behind the middle of the rostrum. Thorax short, 
transverse, a good deal narrowed from the middle to the front, densely, rugosely 
sculptured, with a fine short channel in front of the scutellum. LElytra short and 
broad, slightly shining, moderately finely, not deeply sulcate, the sulci deeply punctate, 
the interstices quite flat. Under surface with scarcely any pubescence. Middle coxe 
more widely separated than usual. 
We have received sixteen examples of this species, but I cannot detect any indication 
of the sexes. 
27. Apion constricticolle, sp. n. (Tab. II. fig. 21.) 
Angustum, nigerrimum, nitidum, nudum; rostro brevi, cylindrico ; prothorace elongato, cylindrico, anterius 
et posterius transversim impresso, fere impunctato; elytris elongatis, leviter striatis. 
Long. 2-23 millim. 
Hab. Mexico, Atoyac in Vera Cruz in April and May (#. H. Smith); GuaTeMa.a, 
near the City, Purula (Champion); Panama, Volcan de Chiriqui, Caldera (Champion). 
Rostrum short, thick, not curvate, scarcely longer than the head, the antennz inserted 
just behind the middle ; eyes rather small, but convex and prominent, placed much in 
front of the thorax, the space between them rather broad, feebly impressed. ‘Thorax 
narrow and elongate, cylindrical, but rendered irregular in outline by the two broad 
depressions, which are more distinct at the sides. Klytra long and narrow, black, 
shining, finely striate, the interstices broad and flat. 
I can see no sexual distinctions among the extensive series obtained of this very 
distinct species. Extremely little variation of any kind is exhibited, except that the 
large series of examples from Purula have a very obsolete bituberculation of the 
rostrum between the insertion of the antenne. In immature specimens the legs are 
more or less piceous. A. longicolle and A. terminale are allied to A. constricticolle, 
but as the legs are not entirely black they are placed in the next division. 
28. Apion heterogeneum, sp. n. (Tab. III. fig. 7.) 
3. Latiusculum, nigrum, opacum, superne fere nudum; rostro crassiusculo, anterius tenuiore ; antennis 
elongatis, hirsutis ; prothorace lato, lateribus rotundatis, fortiter Tugoso-punctato ; elytris sulcatis, inter- 
stitiis convexis ; pedibus difformibus. 
Long. 3 millim. absque rostro. 
Hab. Mexico, Omilteme in Guerrero 8000 feet, in August (H. H. Smith). 
Antenne elongate and thick, armed with long sete, inserted about the middle of the 
rostrum; the base of this latter thick, sculptured, the apical portion cylindrical, smooth, 
and shining; eyes convex, the interval between them wide, with a short, shallow 
II 2 
