126 HETEROMERA. 
Hab. t Norta America, Texas (coll. F. Bates)—Muxico?, Yucatan (coll. F. Bates), 
Etla, Juquila, Cuernavaca, San Andres Tuxtla, Cordova, Putla, Vera Cruz (Sallé), Jalapa, 
Vera Cruz (Hoge), Monclova in Coahuila, Minas Viejas, San Luis Potosi (Dr. Palmer) ; 
GUATEMALA, near the city, Duefias (Salvin), Yzabal (Sal/é), near the city, Duefias, Cape- 
tillo, San Joaquin, San Gerdénimo, Zapote, Volcan de Atitlan (Champion); Nicaragua 
(Sallé, coll. F. Bates), Chontales (Janson); Costa Rica (Van Patten), Irazu, Cache 
(Rogers); Panama, Caldera, Volcan de Chiriqui, Bugaba (Champion).—WeEst Inp1Es, Cuba!. 
This species is abundant throughout Central America; it is also found in Cuba and 
Texas. 
Examples from Dejean’s collection from Mexico and Cuba are before me; these are 
identical with our common: Central-American species. The name B. punctulatus, Jacq. 
Duv., having been previously used by Solier (Gay’s Hist. Chil. p. 233, 1851) for 
another species, I adopt the MS. name JB. interstitialis, Chevr. This species may be 
known from B. dilatatus by the comparatively less transverse thorax, the sides of which 
are less rounded and wider towards the base, the angles much more distinct, and the 
surface not so closely and less confluently punctured ; the strie more deeply impressed 
and the punctures coarser, the interstices more distinctly, less finely, and not so closely 
punctured; the upper surface more shining. In some examples the sides of the thorax 
are rather less rounded and straighter towards the base than in others; in one example 
from Juquila the thorax is broader and more strongly rounded at the sides, though 
agreeing in all other respects with the very long series of upwards of one hundred 
examples before me. Labelled Opatrinus striatus, Say, in the Sallé collection. 
5. Blapstinus longicollis. 
Elongate oval, subparallel, moderately convex, black, opaque, densely clothed with recumbent brownish hairs. 
Head coarsely, closely, and equally punctured, the epistoma somewhat deeply emarginate; prothorax 
feebly convex, comparatively elongate, rather broader than long, widest at the base, the sides almost 
straight (rarely feebly sinuate) from the middle to the base, and slightly narrowed and rounded anteriorly, 
the angles prominent and subacute, the base strongly bisinuate, very closely and rather coarsely punctured, 
the punctures separate and rather finer than upon the head, with an obsolete central channel; scutellum 
closely and finely punctured ; elytra elongate, subparallel, slightly wider than the prothorax at the base, 
regularly punctate-striate, the punctures moderately coarse, transverse, and somewhat deeply impressed, 
the interstices flat, finely and not very closely punctured; legs black; anterior tibie similar in both 
sexes. Beneath slightly shining, first and second ventral segments rather coarsely punctured and wrinkled ; 
in the male the metasternum and ventral surface longitudinally and broadly excavate in the middle, 
Length 74-84 millim. (3 9.) 
Hab. GuatEMata, Champerico (Champion); Nicaracua, Chontales (Belt), Granada 
(Sallé). 
Six examples. A comparatively long and narrow species; the upper surface opaque, 
and densely clothed with recumbent brownish hairs; the thorax long, and the sides 
almost straight behind. In general form this species resembles somewhat the Old 
World genus Gonocephalum. 
