SUNIUS.—DIBELONETES. 601 
13, Sunius cinctiventris. 
Elongatus, linearis, testaceo-ferrugineus ; antennis, palpis pedibusque pallide flavis, abdomine segmento penultimo 
nigricante. 
Long. 43 millim. 
Hab. Mexico, Teapa (Pilate, Sallé); GuateMa.a, near the city, San Gerénimo, San 
Isidro (Champion); Panama, Volcan de Chiriqui 2000 to 3000 feet (Champion). 
Antenne elongate. Head oblong, quite as broad as the elytra, distinctly pterygiate. 
Thorax elongate, slightly narrower than the elytra, a good deal longer than broad. 
Elytra longer than the thorax, asperate-punctate. Hind body densely punctate; penul- 
timate segment black, with the hind margin red; terminal segment ferruginous. 
This insect is very similar to the North-American S. longiusculus, but has longer 
antenne, more distinctly pterygiate head, a longer thorax more slender behind, rather 
longer elytra, and only one segment at the extremity of the body dark. 
The name I have used was proposed by Chevrolat for this species. Fauvel labelled 
it S. attenuatus, Er., and Sallé S. lateralis, Kr.; but it is improbable that either is 
correct. From Guatemala we have received only one or two examples from each 
locality. 
14. Sunius testaceus, 
Sunius testaceus, Er. Gen. et Spec. Staph. p. 613°. 
Hab. GuaTEMALA, near the city (Champion); Nicaracua, Managua (Sallé).—Sovru 
America, Colombia (Moritz) !. 
I have not seen any Colombian exponent of S. festaceus, and it cannot be considered 
certain that our exponents are really the Erichsonian species. We have received only 
one example from Nicaragua and two from Guatemala. 
DIBELONETES. 
Dibelonetes, Sahlberg, Act. Soc. Fenn. ii. 1847, p. 791. 
Sunius (spurii), Erichson, Gen. et Spec. Staph. p. 645 (pars). 
Sunides, Motschoulsky, Bull. Mosc. 1858, ii. p. 688, t. 1. f. c. 
This genus was established on rather indefinite characters, and has since been merged 
in Sunius ; it will, however, be a proper course to maintain it as distinct, and include 
in it such Sunii as have the labrum large in the middle, bispinose, 7. e. furnished with 
two teeth or long spines, but without median excision; there is usually a very minute 
additional lateral denticle on each side. The teeth of the mandibles are constantly 
different in the two genera. In Swnius the labrum is not prolonged in the middle and 
is feebly bidenticulate. 
The genus is, I believe, peculiar to the New World, and more specially characteristic 
of the tropical regions. In addition to the numerous species found within our limits it 
BIOL. CENTR.-AMER., Coleopt., Vol. I. Pt. 2, August 1886. 4 HH 
