D J n as 1 1 dffi /r m Trap I'ca I America. 139 



Ilah. Costa Rica, San Jos(^, La Palma, Irazu; Panama, 

 Chiriqui. 



This differs from the two species just distinguished by its 

 more peHucid and lig-htly punctured elytra and its dark, very 

 smootli pygidium. Tlie thorax is without a posterior marginal 

 line. From C. sororia^ Bates, to which it has a very close 

 superficial resemblance, it is distinguished by its shorter and 

 broader clypeus, which is not punctured but finely rugose, 

 its less punctured elytra and impunctate pygidium. The 

 females are at once recognizable by the lateral expansion of 

 the elytra, which is absent in C. sororia. In the latter 

 species the marginal line of the thorax loses its constancy, 

 our series showing every transition from a complete condition 

 to its entire obliteration behind. 



The North-American C. immaculata, Oliv., has been re- 

 corded by Bates from Cordova in Southern Mexico, on tha 

 strength of a single specimen which proves to be specifically 

 distinct, though nearly related. The species must therefore 

 be supposed to range no further southwards than Northern 

 Mexico, a single specimen only having occurred so far south 

 as Lerdo. 



The other species is here described : — 



Cyclocephala fusciventriSj sp. n. 



Ovata, testacea, vertice, abdomine, thoracis disco utrinque punc- 

 tisque elytrorum duobus post medium fusco-rufis ; capite crebre 

 rugoso, clypeo magnitudinis mediocre, subtruncato ; prothorace 

 sat crebre punctato, liuea media Isevi, lateribus regulariter cur- 

 vatis, angulis posticis obhteratis, anticis acutis; scutello punc- 

 tato ; elytris leviter costatis, grosse punctatis ; pygidio subtiliter 

 rugoso et setoso. 



Long. 12-5 mm. 



Hob. S. Mexico, Cordova. 



The dark markings of the upper surface are only faintly 

 indicated in our specimen, but the fuscous abdomen imme- 

 diately distinguishes it from C. immaculata, in which the 

 abdomen is very pale. The pygidium is very coarsely punc- 

 tured in that species, whereas in the present one it is very 

 finely rugose. The clypeus of G.fasciventris is rather laro-er 

 and the club of the male antenna is less elongate. 



Cyclocej)haIa acuta^ sp. n. 



Testacea, capite, abdomine eljtrorumque basi et sutura infuscatis ; 

 capite medio rufo-maculato, sat crebre punctato, clypeo magno' 



