302 LAMELLICOKJSTIA. 



Bab. Mexico \ San Andres Tuxtla (Salle), Jalapa (Edge) ; British Honduras, R. 

 Sarstoon (Blaneaneaucc) ; Guatemala, Capetillo, Zapote (Champion) ; Nicaragua, 

 Chontales (Belt). 



Mexican specimens have the elytra pale testaceous, with the suture and a very long, 

 oblique, dorsal vitta on each elytron castaneous, or they are spotless ; in those from 

 Guatemala the dark castaneous pigment prevails, and the broadened oblique vitta some- 

 times coalesces with an equally widened sutural border, the outer margin also being 

 castaneous. In the darker examples the thorax is red. The hind margin of the 

 thorax has a continuous, deeply impressed groove. The marginal callus of the elytra 

 in the female is obsolete, or exists only as a slightly raised spot distant from the margin, 

 which latter is thickened (but straight) for a short distance. 



An example from Jalapa is figured. 



9. Cyclocephala sanguinicollis. 



Cyclocephala sanguinicollis, Burm. Handb. der Ent. v. p. 49 1 . 

 Hob. Mexico 1 , Toxpam, Santecomapan (Salle). 



In form, colour, and sculpture, this species closely resembles C. gravis, which belongs 

 to the section with sinuated clypeus. The female elytral dilatation differs, however, 

 much from that of C. gravis, being much behind the middle, and accompanied by a 

 small, narrow callus. 



10. Cyclocephala mutata. 



Cyclocephala mutata, Gemm. & Harold, Cat. Col. iv. p. 1243. 



Cyclocephala frontalis, Burm. Handb. der Ent. v. p. 50 x (1847) (nee Chevrolat in Icon. Kegne Anim. 

 p. 90 (1830) ; Ann. Soc. Ent. Er. 1865, p. 30). 

 Bab. Mexico, Cordova (Edge), Playa Vicente, Campeche (Salle), North Yucatan 

 (Gaumer), Yucatan 1 ; Costa Eica (Salle, Van Patten), Volcan de Irazu 6000 to 

 7000 feet (Bogers) ; Panama, Volcan de Chiriqui 4000 to 6000 feet (Champion). 



Among the numerous unicolorous testaceous species with black crown, this is 

 distinguished by its semi-ovate clypeus, variable in size, but smaller and relatively 

 narrower than in C. signata, with the front edge sometimes almost obtusely truncated, 

 but renexed and without trace of emargination. The thorax is relatively much smaller 

 than in C. signata, but the sides and hind angles are similarly rounded. The upper- 

 side is light yellowish, the underside generally more rufous. The male has long hind 

 tarsi with long claws ; the female is distinguished from the same sex of the allied species 

 by the lateral margin of the elytra a little behind the middle being dilated, forming a 

 lobular projection, near which the surface has a slight callosity. This is probably what 

 Burmeister means by his phrase "Das weibchen zeigt de schmale randschwiele recht 

 deutlich." 



