APION, 55 
as I suppose, the male differs from the female only in having the rostrum rather 
shorter. 
This is a very obscure little Apion, but its form is more slender than that of most of 
the species whose descriptions resemble it. 
18. Apion tantillum, sp. n. 
Angustum, nigrum, subnitidum, elytris subanescentibus; rostro opaco, sculpturato, basi lato; prothorace 
angusto, subcylindrico, dense fortiter punctato; elytris sat profunde, anguste sulcatis. 
Long. 12 millim. 
Hab. GUATEMALA, near the city (Champion). 
Rostrum nearly as long as the head and thorax, curved, thick, broad and flat at the base, 
unusually dull owing to a dense, fine sculpture ; antenne inserted rather farther from 
the eyes than the width of the interval between these ; eyes not prominent, small, the 
head narrow, though the space between the eyes is rather broad; this space is quite 
flat, densely and indistinctly punctured. ‘Thorax slender, not narrowed in front, the 
punctuation close, coarse, and distinct. Elytra narrow, but much broader than the 
thorax, their grooves moderately deep, rather narrow, indistinctly punctured. Middle 
coxe contiguous. 
We have received three examples of this obscure Apion; they do not exhibit any 
sexual distinctions. The broad, flat base of the rostrum, its peculiar dull surface and 
fine sculpture are rather peculiar. 
19. Apion lassum, sp. n. 
Angustum, subnitidum, nigrum, elytris subsenescentibus ; rostro mediocri, cylindrico, sat nitido; prothorace 
minus gracili, subcylindrico, fortiter punctato ; elytris sat profunde sulcatis. 
Long. 2 millim. 
Hab, GuateMaLa, Chiacam (Champion). 
Rostrum a little longer than the head and thorax, moderately stout, cylindrical, 
shining, except at the base; antenne inserted a little farther from the eyes than 
the width of the space between them ; eyes a little prominent, the interocular space 
moderately broad, feebly striate. ‘Thorax only very slightly narrowed in front, closely 
and coarsely punctured, with a short channel in front of the scutellum.  Elytra 
narrow, rather deeply sulcate, the grooves distinctly punctured, the interstices rather 
narrow. Middle coxe distinctly separated. Two examples. 
This bears some resemblance to Apion guatemalenum, but is a narrower insect and 
less shining; the two are not likely to be confounded when seen side by side. A. lasswm 
is, however, probably a species intermediate as regards the colour of the legs between 
the two divisions into which I have divided the genus, as there is a slight deficiency of 
black colour on the anterior tibiz, so that the expression “Jegs entirely black” is not 
quite satisfactory in the case of this insect. 
