PACHTSCHELUS. 149 



male is widely emarginate in the middle of the apex, with four teeth (placed obliquely) 

 on each side, the first, second, and third of these subequal, strong and acute, the out- 

 side one smaller (fig. 22 a). 



28. Pachyschelus cinctus. (Tab. VIII. fig. 15.) 



Ovatus, convexus, niger, obscure aenescens, pube breyi griseo-alba tectus ; elytris macula magna communi 



rotundata calva. 

 Long. 1| lin. 



Eab. Guatemala, Eio Maria Linda 500 feet (Champion) ; Panama, Volcan de 

 Chiriqui 2000 to 4000 feet (Champion). 



A short ovate species, arcuately acuminate posteriorly. The head and thorax are 

 densely punctured, clothed with greyish-white pubescence, the latter apparently with 

 two small bare spots on the disc. The scutellum is bare and shining. The elytra are 

 shining, with some indistinct lines of punctures ; clothed with greyish-white pube- 

 scence, except a large round spot, common to both elytra. The terminal segment of 

 the abdomen of the male is very slightly sinuate on each side, almost truncate at the 

 apex (with the angles rounded), with twelve or fourteen short, small, not very sharp 

 teeth (fig. 15). In some lights a slight coppery-purple tint may be seen at the sides of 

 the elytra. 



y 29. Pachyschelus irroratus. (Tab. VII. figg. 23, 23 a.) 



Elongatus, ovatus, convexus ; capite thoraceque seneis, punctatis, parce griseo-pubescentibus ; elytris brunneo- 

 cupreis, sub bumeris tborace perpaullo latioribus, postice gradatim angustatis, evidenter punctatis, pube 

 brevissima grisea irroratis. 



Long. 1| lin. 



Eab. Mexico, Mazatlan in Sinaloa (Edge). 



This is a very elongate-ovate, convex species. The head is not much imbedded in 

 the thorax. The thorax is much less short than usual, and also much less narrowed 

 anteriorly, comparatively more gently emarginate in front ; distinctly punctured, the 

 punctures not very far apart. The scutellum is smooth. The elytra immediately below 

 the shoulders are only a trifle wider than the thorax, and thence to the apex are in a 

 gentle curve narrowed to the apex ; the punctuation is somewhat strong and irregular ; 

 the short pubescence does not appear to form any distinct pattern. The terminal 

 segment of the abdomen of the male has eight moderately large teeth arranged in a 

 curve, broad at their base, gradually acuminate, the outer tooth smaller than the 

 central ones (fig. 23 a). 



30. Pachyschelus laticeps. (Tab. vill. fig. 16.) 



Elliptico-ovalis, leviter convexus, nitidus ; capite lato, thorace scutelloque brunneo-cupreis ; elytris purpureis, 



crebre punctatis, fascia post medium apiceque griseo-pubescentibus, lateribus medio obtuse angulatis. 

 Long. 1| lin. 



