172 Mr. G. J. Arrow o)i the 



the large juxtasciitellar spots. It is equally closely allied 

 to C. tutelina, Burm.j in which the small elytral spots are 

 absent and the lateral lobe of the elytra in the female is 

 smaller and more abrupt. 



Two species have received the name of C villosa, the first 

 being a Bolivian species of Blanchard^s. I propose to sub- 

 stitute burealis for villusa, Burm., a North-American insect. 



Chalepus leucophthahnus , Fisch., appears to me from the 

 description to be Cijclocephala melanocephala , F., or one of 

 the two or three closely similar species. 



A peculiar sexual diflPerence characterizing a large pro- 

 portion of the species of Cyclocephala has been overlooked. 

 It occurs in the mandibles, those of the male being con- 

 spicuously toothed extenuilly at the extremity. This is very 

 apparent in the following new species : — 



Cyclocephala gregaria, sp. n. (PI. IV. fig. 11.) 



Nigra, prothoi'ace, scutello, clytrorum macula utrinque media, vitta 

 suturali juiicta (hac apice plerumque dilatata), abdomiue pectore- 

 que plus minusve fulvis vel rufis ; breviter ovata, corpore supra 

 et subtus plus miuusve fulvo-hirsuto (femiuis autem interdum 

 fere glabris) ; clypeo sat magno, antice truncato, rugoso, vertice 

 puuctato ; protliorace parce subtiliter punctato : scutello paulo 

 punctato ; clytris intcqualiter baud profundo punctatis : 



S , subtiliter punctata, sat dense et louge pilosa, pygidio precipue, 

 mandibulis apice extus recte reflexis, tarsis anticis crassis, uugue 

 majori minute fisso : 



2 , elytris grossius et magis seriatim punctatis, paulo birsutis, 

 pygidio uitido, parce punctato et hirsute, clytrorum lateribus 

 multo post medium valde angulatis. 



Long. 17-21 mm. ; lat. max. 9-5-11 mm. 



Hab. Colombia : INIedelliu [Buckley), Cauca Valley ; 

 Ecuador : Macas [Buckley). 



Var. pallida. Fulva, capito, pedibus, pectoris lateribus, clytro- 

 rumque marginibus a basi ad partem tertiam fuscis. 



Hah. Medcllin. 



I have received this from Messrs. Staudingcr and Bang- 

 Haas with the unpublished name I have adopted. It is 

 nearly related to C. conspicua, Sharp, but difl'ers in its hairy 

 clothing and immaculate pronotum. The markings are very 

 variable. In one specimen the elytra arc black, with a large 

 quadrate reddish i)at('b near the mubllo of each. Normally 

 there is also a stripe of the same colour upon the posterior 



