28 RHYNCHOPHORA. 
15. Trachelizus turgidirostris. 
Trachelizus turgidirostris, Boh. in Schénh. Gen. Cure. v. p. 493 '. 
Hab. Mexico!, Toxpam, Catemaco (Sallé), Atoyac in Vera Cruz (H. H. Smith); 
Guarema.a, Teleman and San Juan in Vera Paz, Zapote, El Tumbador (Champion) ; 
Nicaragua, Chontales (Belt); Panama, Volcan de Chiriqui (Champion). 
Though so widely distributed in our region, this appears to be a rare insect, as we 
have received only twenty-three examples. It exhibits considerable variety in size and 
punctuation. Usually it may be known by the existence of some large but not deep 
punctures on the flanks of the prothorax near the base. The depression on the vertex 
is very elongate, angular in front, but more or less regularly prolonged as a channel on 
the metarostrum. The apices of the elytra of the male, seen beneath, are not expla- 
nate. ‘The punctures of the elytra are distinct but remote, so that the interstices are 
not at all elevated. 
Boheman’s description! accords better with this species than with any of the others, 
and Sallé’s collection contained specimens labelled with this name. The description 
of the Swedish naturalist was apparently made from a single female in Chevrolat’s 
collection, and is far from characteristic. 
16. Trachelizus fracticornis, sp. n. (Tab. I. fig. 24, ¢ .) 
Rufo-niger, nitidus ; rostro basi profunde argute sulcato; prothorace sulcato, anterius obsolete transversim im- 
presso ; elytris seriatim fortiter punctatis. 
Long. 9-14 millim. 
Hab. Mexico, Cordova (Sailé); British Honpuras, Belize (Blancaneauax) ; Guate- 
MALA, Las Mercedes, Cerro Zunil (Champion); Nicaragua, Chontales (Belt, Janson) ; 
Panama, Volcan de Chiriqui (Champion). 
This is one of the most distinct species of the group, with the elytra more or less 
indistinctly striped with red and black ; the club of the antenne is not so well marked 
as usual, the ninth and tenth joints being short and bead-like, and the terminal joint 
not long; the basal joint, on the other hand, is remarkably elongate, especially in the 
male, and the antenne are geniculate, somewhat as in the Curculionide proper. The 
very broad thoracic groove is limited in front by an obsolete transverse impression, 
placed a considerable distance from the front margin. The elytra have a broad groove 
next the suture; the first series of punctures is placed in this groove, and therefore 
concealed ; the second series consists of very large punctures, but near the apical portion 
the punctures of this series are small; the third series consists of quite small punctures, 
and so forms a remarkable contrast to those adjoining it. On the under surface the 
whole of the head and prorostrum are dull, so that the serial punctures can only be 
detected by the position of their sete. In the male the last ventral plate is furnished 
with two contiguous tufts of yellow long pubescence; the apex of each elytron is a 
