AT^NIUS. 97 



evenly punctured ; the elytral interstices convex, and behind gradually more carinated 

 with conspicuous punctures on each side ; the scutellum concave, with a smooth carina 

 down the middle ; and the outer apex of the four hinder tibia? produced into a long 

 acute spine. The species is possibly the Euparia atramentaria, Erichs., of Peru, but the 

 absence of mention of the sculpture of the scutellum leaves the matter in uncertainty. 



6. Ataenius euglyptus. 



A. scutellari affinis et similis, sed scutello piano, medio basi foveolato ; capite rufescente, toto sequaliter subdense 

 punctulato ; thoraee punctis majoribus et rainoribus subdense intermixtis, lateribus grossius confluenter 

 punctatis, basi subtiliter marginata utrinque versus angulum sinuato-truncata, lateribus antice late depressis 

 et puncto magno ; elytris eleganter exarato-striatis et in strias punctatis, interstitiis (versus humeros 

 punctulatis exceptis) Isevibus, l°-4 m dimidio basali planis, cseteris convexis, versus apicera acute carinatis ; 

 tibiis 4 posticis apice longe spinosis. 



Long. 5| inillim. 



Rob. Mexico, Las Vigas (Edge). 



Evidently very near Euparia catenulata, Erichs., of Peru, from which it differs in the 

 plane interstices of the elytra. 



7. Ataenius perforatum. 



Ataenius perf or atus, Harold, Col. Hefte, i. p. 83 \ 



Hob. Mexico, Cordova (Salle) ; Guatemala, near the city, Aceituno, San Geronimo. 

 Balheu, Cubilguitz (Champion) ; Panama, Bugaba, Volcan de Chiriqui, Caldera (Cham- 

 pion). — South America, Colombia 1 . 



A little larger and more convex than A. strigicauda, and with much more strongly 

 punctured thorax ; the elytral interstices smooth, towards the apex carinated, and 

 scored with a fine stria on each side. The scutellum has at the base two oblong 

 fovese. 



8. Ataenius complicatus. 



Ataenius complicatus, Harold, Col. Hefte, v. p. 102 1 . 



Hab. Mexico, Chilpancingo (Edge); Guatemala, Zapote (Champion). — South America, 

 Brazil * 



Closely allied to A. perforatus and A. euglyptus, but the elytral interstices throughout 

 acutely cariniform, and the surface beset with erect bristles. In consequence of the 

 narrowed interstices the lateral scored line on the side of each, seen in a rudimentary 

 form in most of the allied species, has here become a broad furrow separated from the 

 stria proper by a lesser carina. The scutellum has in the middle of the base a large 

 triangular opaque fovea. The base of the thorax is not margined, but in some examples 

 a fine impressed line is seen on the deflexed edge in the middle. 



biol. centr.-amer., Coleopt., Vol. II. Pt. 2, Sept ember -1887. 00 



