CYCLOCEPHALA. 303 



The specific name adopted by Burmeister was preoccupied by Chevrolat for an 

 evidently very distinct Cuban species, the sole example of which, as Chevrolat records, 

 was destroyed. 



11. Cyclocephala sororia. (Tab. XVII. fig. 22, <j .) 



Cyclocephala cerea, Burm. Handb. der Ent. v. p. 51 ? 



G. mutatce proxime afflnis, differt tantum corpore magis ovato, tarsis posticis S cum unguibus paullo breviori- 



bus, et prsecipue $ elytris nee callosis nee margine dilatatis. 

 Long. 17-20 miUim. <J $ . 



Hab. Mexico, Yolos (Salle) ; British Honduras, R. Sarstoon (Blancaneaux) ; Guate- 

 mala, Zapote, Capetillo (Champion) ; Costa Rica (Salle, Van Patten). 



The females of this species are readily distinguishable from those of the preceding 

 by the lateral margin of the elytra being simple, like that of the male, except for the 

 rather more thickened edge ; there is no trace of the slight lobular projection or surface- 

 callus. The males show no constant difference : all that can be said is that their 

 general form is more ovate, and the hind tarsi, with their claws, when very attentively 

 compared appear to be a little shorter. The colour is the same, but a good proportion of 

 examples, especially from Guatemala, are very dull castaneous on the underside. The 

 punctuation of the whole upper surface varies in both species, but it is nearly always 

 very fine, and the sides of the forehead and thorax show no trace of the larger punctures 

 which are so conspicuous in C. signata and its immediate allies. The pygidium in both 

 species is glabrous and nearly smooth ; but in C. sororia it is generally more highly 

 polished and freer from punctuation than in C. mutata. 



The species must be closely allied to the Jamaican C. cerea, Burm., but the descrip- 

 tion of the latter equally well applies to C. epistomalis. 



A Costa Rican specimen is figured. 



12. Cyclocephala epistomalis. 



C. mutatce et G. sororice simillima, sed differt clypei margine antico elevato et incrassato epistomateque declive 

 vel fere horizontali. Elongato-ovata, convexa, fulvo-testacea, subtus cum pygidio piceo-nigra, nitida, 

 capite nigro, femoribus rufo-testaceis ; tborace sparsim subtiliter punctulato, angulis posticis mediocriter 

 rotundatis ; elytris sat dense punctulatis, striis geminatis flexuosis punctulatis utrinque duabus ; pectore 

 fulvo-piloso ; pygidio polito, subtiliter pilifero-punctulato, $ leviter longitudinaliter convexo ; prosterni 

 processi! postcoxali alto. 



Long. 20 millim. $ . 



Hab. Guatemala (Salle), Capetillo (Champion). 



Two examples only, both females. In one the raised anterior margin of the clypeus 

 is slightly sinuated, in the other it is rounded ; the outline of the clypeus is semiovate 

 only by including the anterior margin of the epistome. The affinities of C. epistomalis 

 are with C. mutata of the present group, and not with C. mafaffa of the sinuated-clypeus 

 group. The peculiarity in the form of the clypeus lies in the broad and very oblique posi- 



