106 EKOTYLID^E. 



Mas tarsorum articulis duobus primis latioribus, femoribus anticis parum incrassatis, segmento ventrali primo 

 puncto piligero. 



Hab. Costa Eica ( Van Patten). 



This insect scarcely differs from C. guatemalos, excepting that the thorax is wholly 

 black. In the male, however, there is a structural difference in the apex of the front 

 tibiae, this in C. costaricensis being grooved on the inner side for the reception of a 

 small carina in the femoral groove, upon which the tibia closes. 



Two specimens, both males. 



10. Cypherotylus gaumeri. (Tab. VI. fig. 8, <j .) 



Breviter oblongus, postice ovatus, convexus, niger, nitidus ; prothorace transverso, utrinque oblique foveolato ; 

 elytris testaceis, punctis impressis sat magnis, humeris, maculis duabus magnis, fasciam obliquam in 

 medio fere interraptam formantibus, apice epipleurisque nigris ; pedibus quatuor posticis corallino- 

 annulatis. Long. 16 millim. 



Mas femoribus anticis incrassatis, segmento primo ventrali puncto piligero. 



Hab. Mexico, Temax in North Yucatan (Gaumer). 



There is no known species with which this can be very well compared. The form is 

 that of C. boisduvali, but no other species of that group with the hind femora ringed 

 with red is known to me ; the rings are similar to those of C. annulipes, though rather 

 wider. The single specimen received is a male, and the thorax is wide and formed 

 almost as in the male of 0. boisduvali, but the elytra are shorter. 



11. Cypherotylus boisduvali. (Tab. V. fig. 23, $ .) 



Erotylus Boisduvalii, Chevr. Col. Mex. Cent. i. fasc. 4, no. 90 l ; Lac. Monogr. Erotyl. p. 466 2 . 

 Cypherotylus Boisduvalii, Crotch, Cist. Ent. i. p. 540 3 . 

 Erotylus californicus, Lac. Monogr. Erotyl. p. 467 4 . (Var.) 



Hab. North America, California 4 . — Mexico 1 2 3 , Puebla, Orizaba, Tlatingo, Parada, 

 Chiapas (Salle), Jalapa, Las Vigas (Hoge); Guatemala, Calderas 6000 feet, San 

 Geronimo, Purula (Champion). 



The elytra in this species are convex, even, with largish, not very numerous, black 

 dots ; their colour is ochraceous. The thorax is uneven, with two oblique foveas on 

 each side, and a deep transverse one at the base. The elytra are more firm in texture, 

 and more shining than in the following two species ; the suture is finely raised, but 

 there is not a stria. We have received a large number of examples. 



The true C. boisduvali does not occur in the United States ; the species thus 

 identified by Crotch (Trans. Am. Ent. Soc. iv. p. 358), is described below under the 

 name of C. aspersus. The variety might perhaps be now restored to specific rank, but 

 the number of examples in the collection before me is hardly sufficient to enable 



