432 SEKRICOKNIA. 



3 triangular, twice the length and twice the width of 2, 11 elongate, a little longer and narrower than 10. 

 Prothorax convex, nearly as long as broad, almost square, slightly narrowed in front, the sides feebly 

 sinuate before the base ; the hind angles acute and moderately long ; the surface closely, minutely punc- 

 tate, with scattered coarser punctures intermixed ; the base abruptly incised on either side, and with a 

 short deep sulcus extending forwards from it. Elytra nearly three times the length of the prothorax, 

 and wider than it at the base, narrowing from a little below the base to the apex ; deeply punctate- 

 striate, the interstices very convex, becoming narrowly costate before the apex, and minutely punctate. 

 Beneath closely, minutely punctate, with scattered coarser punctures intermixed. Claws bicuspid, the 

 inner tooth short and very fine. 

 Length 7, breadth 2 millim. ( 3 .) 



Hdb. Guatemala, Champerico (Champion). 



One example. This species differs from all its allies in the form of the antennae, 

 claws, and front. The base of the thorax has a single notch on either side, from 

 which a short deep sulcus extends forwards. 



6. Horistonotus obliterates. 



Moderately elongate, not very convex, shining, sparsely clothed with fine yellowish-cinereous pubescence ; 

 brown or rufo-castaneous, the anterior and hind angles of the prothorax and the base of tbe elytra 

 rufescent in dark examples ; the antennae ferruginous, the legs testaceous. Head finely punctured, with 

 numerous coarse punctures intermixed ; antennae slender, extending very little beyond the base of the 

 prothorax in the female, longer in the male. Prothorax much broader than long, moderately convex, 

 considerably wider at the base than at the apex, the sides rounded anteriorly and subparallel from the 

 middle to the base ; the hind angles rather obtuse, excavated above for the reception of the humeri ; the 

 surface closely, minutely punctate, with intermixed scattered coarse punctures, the latter conspicuous on 

 the anterior half and at the sides, becoming finer towards the base ; the base sinuate on either side, 

 without trace of notches or sulci. Elytra about two and one-half times the length of the prothorax, and of 

 the same width at the base, slightly flattened on the disc, subparallel to the middle and narrowing thence 

 to the apex, the humeri subangular and somewhat prominent ; rather coarsely punctate-striate, the 

 interstices feebly convex, almost flat towards the suture, and sparsely punctured. Beneath very finely, 

 closely punctate, with coarse punctures intermixed. Claws rectangularly dilated from the middle to 

 the base. 



Length 5-6f , breadth \\-2\ millim. ( <$ £ .) 



Hab. Mexico, Huetamo in Michoacan (Hbge), Teapa in Tabasco (coll. Janson), 

 Yucatan (Pilate, in coll. Janson), Temax in North Yucatan (Gaumer) ; Guatemala, 

 San Geronimo (Champion) ; Nicaragua, Chontales (Janson). 



Seven specimens, varying greatly in size and colour, the single examples from Teapa 

 and Chontales being very small. This insect closely resembles Esthesopus humilis, 

 Cand. (except that there are no coarse punctures at the base of the thorax), and one of 

 the two specimens doing duty for that species in the Janson collection, determined by 

 Candeze himself, belongs to H. obliteratus, it having the fourth tarsal joint simple. 

 The present species is nearly allied to the Antillean H. asthenicus, Cand., but it is more 

 elongate and more parallel, with the thorax wider in front. The coarse scattered 

 punctures on the thorax are conspicuous on the anterior half and at the sides. 



