44 LAMELLICOENIA. 



1. Scatimus ovatus. (Tab. n. fig. 23.) 



Scatimus ovatus, Harold, Berl. ent. Zeitschr. 1862, p. 401 *. 



Eab. Mexico 1 , Cuernavaca, Cordova, Toxpam, Playa Vicente {Salle), Juquila, 

 Chilpancingo (Edge); Panama, Bugaba, Volcan de Chiriqui, David, Tole (Champion). 



An example from the Volcan de Chiriqui is figured. 



2. Scatimus patruelis. 



Scatimus patruelis, Preudhomme de Borre, Ann. Soc. Ent. Belg. xxx. p. 108 (1886) 1 . 

 Edb. Mexico 1 . 



CHCERIDIUM. 



Chceridium, Lepeletier de Saint-Fargean & Serville, Encycl. Meth., Ins. x. p. 356 (1825); 

 Lacordaire, Gen. Col. iii. p. 93; Harold, Col. Hefte, iv. p. 32 (1868). 



A genus, so far as at present known, peculiar to America. The great majority of its 

 species belong to the tropical regions of the continent, and only a few inhabit the 

 temperate zones north and south. Nearly forty species have been described. 



1. Choeridium iilaesum. 



Chceridium illcesum, Harold, Col. Hefte, iv. p. 53 r . 

 Eab. Mexico \ Tuxtla (Salle), Tonila in Colima, Jalapa (Edge). 



Belongs to a group of closely-allied species, of which the well-known C. capistratum 

 of North America may be taken as the type. It is larger than C. capistratum and more 

 oblong. According to a specimen in the Salle collection labelled C. illcesum in Von 

 Harold's handwriting, it is distinguished from that and most other nearly-related species 

 by the nearly plane pygidium (" leviter convexum " according to Von Harold), the 

 scarcely widened last ventral segment and the faintly punctured fore margins of the other 

 ventral segments. The thorax is smooth, except in the middle of the base, which is 

 narrowly margined. As to the obsoletely-punctured elytral striae adduced by Harold 

 as a distinguishing character, this seems to be variable, the striae (especially towards the 

 sides) being sometimes as strongly crenate-striate as in the allied forms. 



2. Chceridium chrysopyge. 



G. illceso proxime affine; majus, aterrimum, politum; pygidio piano, medio vix perspicue carinato, viridi-aurato 

 spleri didissimo, oblongnm ; tborace margine laterali prope angulos anticos verticaliter arcuato, basi anguste 

 marginato et crenato-punetato, medio linea dorsali impresso ; elytris crenato-striatis (apice striis profrmdius 

 exaratis), interstitiis fere planis ; corpore subtus nigro, femoribus 4 posticis cuprascentibus, segmentis 

 ventralibus planis, subtiliter annulato-punctatis ; antennis fulvo-testaceis. 



Long. 8-10 millim. 



Eab. Guatemala, San Geronimo (Champion). 



A large number of examples, all alike except in size. The species differs from 



