Coleopterous Suhfamily Dynastinae. 171 



The name nigi'ocephala applied by Sclioulierr to Olivier^s 

 C. melanocephala (pronounced by Illiger to be distinct from 

 the melanocephala of Fabricius) had been previously used by 

 De Geer, and I have therefore called the species G. olivieri. 



Cyclocephala stolata, Er., is evidently synonymous with 

 C dispar, Herbst {=C. dorsalis, Burm.). 



Cyclocephala pubescens, Burm., must be added to the list of 

 Central- American species, the examples from Nicaragua and 

 Panama assigned by Bates to C. lucida, Burm., really be- 

 longing to the former, first recorded from Peru. It was 

 independently described with the name pubescens by both 

 Burmeister and Erichson ; but Dr. Ohaus states that the 

 types of both authors had the same origin, and, although 

 the descriptions differ greatly, there is no doubt that they 

 represent varieties of the same species. C. pubescens and 

 C. lucida belong to a group of very closely related and 

 variable forms Avhich all pass through a range of almost 

 identical colour-phases. The typical })hase of C. lucida 

 appears to be confined to Mexico. The specimens from 

 Guatemala (Zapote) form a smaller and less spotted variety. 

 C. pubescens, which replaces it to the south, is with difficulty 

 distinguishable from this variety, but in the female the 

 lateral lobe of the elytra forms a minute but very prominent 

 tongue, whei'eas in C. lucida it is an obtuse angulation. The 

 oedeagus of the male is rather more slender. 



The following is another very closely related species : — 



Cyclocephala venezuelce, sp. n. 



Eufo-testacea, nitida, capite toto, vittis pronoti duabus postice 

 abbreviatis, elytrorum marginibus anticis et lateralibus (his 

 postice abbreviatis), macula circumscutellari ad marginem con- 

 nexa punctisque utrinque tribus, tibiis tarsisque nigris ; capite 

 sat fortiter punctato ; protborace elytrisque parce baud profunde 

 punctatis ; abdomine cum pygidio fulvo-birto : 



cJ , pedibus anticis multo crassatis : 



2 , elytris extus post medium obtuse dilatatis. 



Long. 19-22 mm. ; lat. max. 10-12 mm. 



Hab. Venezuela. 



This closely resembles C. lucida, but is rather more 

 shining and scantily punctured. It differs also by its black 

 head, tibise and tarsi, the two thoracic marks which reach 

 the front margin, but are curtailed behind, and the black 

 margin to the anterior part of the elytra, which unites with 



