LIXUS, 103 
basal constriction of the elytra not apparent. About eighty specimens have been seen, 
varying greatly in size and in the amount of pubescence on the surface. Several 
South-American Liat have dentate femora, but our insect seems to be different from 
all those described *. | 
2. Lixus cavicollis, sp. n. 
Lizxus cavicollis, Chevr. in litt. 
Elongate, robust, subfusiform, moderately shining, black, clothed with a very short, sparse, cinereous pubescence, 
which is often mottled on the elytra; the legs and under surface with intermixed longer hairs. Head 
excessively minutely punctate, with intermixed slightly coarser punctures, foveate between the eyes; 
rostrum shining, very stout, about as long as the prothorax in both sexes, longitudinally sulcate between 
the points of insertion of the antenna, the punctuation a little sparser than that of the head. Prothorax 
convex, conical, about as long as broad, strongly bisinuate at the base, the median lobe almost covering 
the vertical scutellum ; densely, minutely punctate, with scattered, intermixed, coarser punctures, the 
basal impression large, rounded, and very deep; anterior margin with a short obtuse tooth opposite the 
lower angle of the eyes. Elytra very elongate, much wider than the prothorax, abruptly and sinuously 
narrowed at the base and narrowing from the middle to the apex, the apices acutely produced, the 
common basal impression broad and deep, the anterior margin somewhat raised ; seriate-punctate, the 
interstices flat and minutely, rugulosely punctate. Beneath shining, sparsely, very minutely punctate, 
with intermixed coarser punctures. First and second ventral segments with a deep groove down the 
centre in the ¢. Body winged. 
Length 16-22, breadth 44-73 millim. (co 2.) 
Hab. Mexico, Sierra de Durango, Tumbala in Chiapas (£lohr), Guerrero (Baron), 
San Andres Tuxtla, Toxpam (Sallé), Cordova (Hége), Fortin, Teapa (47. H. Smith) ; 
British Honpuras, Rio Sarstoon (Blancaneaux); Guatemala, Coban (Sallé, Conradt), 
Chiacam, Tamahu, Escuintla, San Isidro, Zapote, Capetillo (Champion); Costa Rica, 
Alajuela (Orozco, in Mus. Brit.), San José (Biolley). 
L. cavicollis is quoted by Boheman as synonymous with Z. fimbriolatus, but it differs 
from that species in its broader and more robust form, the scantier pubescence (which 
is not all concentrated laterally), the very stout, comparatively short rostrum in both 
sexes, and the larger depression at the base of the prothorax. ‘This is a common 
insect in Mexico and Guatemala, whence we possess a long series, varying only in size. 
3. Lixus fimbriolatus. 
Licus fimbriolatus, Boh. in Schénh. Gen. Cure. ili. p. 42 (1836); op. cit. vii. 1, p. 457 (excl. 
syn.) *. 
Lixus macer, Lec. Proc. Am. Phil. Soc. xv. p. 160 (1876) °; Casey, Ann. N. York Acad. Sci. vi. 
pp. 197, 208', 7 
Lizus oblongus, Sturm, in litt.’ 
Lizus murcidus, Sturm, in litt.° | 
Hab. Nortu America, Southern and Western States4 to Colorado and Texas 3.— 
Mexico? (Sallé, ex coll. Sturm+), Puebla, Oaxaca (Sallé), Matamoros Izucar, Tacam- 
* L, manifestus, Kirsch, from Bogota, is an allied form, but Dr. Heller assures me that Central-American 
specimens cannot be referred to it. 
