LIXUS. | lil 
the funiculus is sometimes longer than the first. The first ventral segment is not 
or very faintly depressed along the middle in the male. About half the numerous 
examples from Guerrero belong to the varietal form. Length 11$-17, breadth 
2—4 millim. 
20. Lixus sulcimargo, sp. n. 
Very elongate, rather shining, black; clothed above with a very short, fine, sparse, greyish pubescence, and 
with a narrow, depressed, submarginal line of ashy pubescence on the elytra, which is continued forwards 
along the upper part of the flanks of the prothorax; the under surface and legs cinereo-pubescent. Head 
closely, minutely punctate, foveate between the eyes; rostrum very stout, feebly curved, shorter than the 
prothorax in both sexes, shining, not very closely punctate. Prothorax convex, gradually narrowing 
from the base forwards, the base strongly bisinuate ; densely, minutely, rugulosely punctate, with a few 
scattered coarser punctures intermixed, the basal depression oblong and rather shallow ; anterior margin 
with an obtuse tooth opposite the lower angle of the eyes. Elytra very elongate, closely fitting to the 
base of the prothorax, and here not or but little broader than it, widening to slightly beyond the middle 
and then narrowing to the apex, the apices somewhat produced ; seriate-punctate, the interstices flat, 
rugulosely punctate, the seventh depressed. First ventral segment flattened along the middle in both 
sexes. Body apterous. 
Length 16-164, breadth 43-5 millim. (d @.) 
Hab. Panama, Volcan de Chiriqui 4000 feet (Champion). 
One pair. Very like LZ. teniatus, but with a stouter rostrum, the prothorax not 
transversely wrinkled at the base, the elytra distinctly dilated beyond the middle, 
with the anterior margin less thickened, and the apices rather sharp and somewhat 
produced. 
From the still more nearly allied Z. apterus it may be separated by the flat elytral 
interstices, the seventh depressed and with a condensed line of pubescence. 
21. Lixus teniatus, sp.n. (Tab. VII. figg. 13, 13a, ¢.) 
Very elongate, rather shining, black, the antenne partly rufescent; clothed above with a very short, fine, 
scattered, greyish pubescence, and with a narrow depressed line of longer and denser white pubescence 
running along the margins of the prothorax and elytra; the under surface and legs cinereo-pubescent. 
Head closely, minutely punctate, foveate between the eyes; rostrum of the ¢ moderately stout, feebly 
eurved, a little shorter than the prothorax, closely punctate, that of the 2 slightly longer, and smoother 
and more shining at the tip. Prothorax convex, longer than broad, subconical, the sides parallel behind 
in the g; densely rugulosely punctate, and sometimes with a few coarser punctures intermixed, trans- 
versely wrinkled at the base, the basal depression transverse and rather shallow; anterior margin with 
an almost obsolete tooth opposite the lower angle of the eyes. LHlytra very elongate, widest at or a little 
beyond the middle, the basal margin thickened and raised, and projecting laterally beyond the hind angles 
of the prothorax, the apices separately rounded ; shallowly seriate-punctate, the interstices flat, rugulosely 
punctate, the seventh depressed. First ventral segment deeply depressed along the middle in the ¢, and 
flattened in the 2. Body apterous. 
Length 14-20, breadth 33-53 millim. (¢ @.) 
Hab. Mexico, Jacale (Sallé), Las Vigas in Vera Cruz (Hoge); Guaremaua, Purula. 
and Sabo in Vera Paz, Atlantic slope (Champion). 
Numerous examples. JDistinguishable from our other apterous species with a 
