462 Mr. G. J. Arrow on new 



(5" , clypeo laevi, froute utrinque intra oculos sat acute tuberculata : 

 5 , clypeo rugose punctato, fronte ad oculos vix tuberculata. 

 Long. 7 mm. ; lat. 5 mm. 



Hah. E. Brazil (R. Grande do Norte) : Ceara-Mirim 

 (Parahyba), IiKlependencia, Bahia. 



A series of boili sexes of this insect was obtained at Baliia 

 in 1860 by the late Alexander Fry. One of these (a male) 

 becomes tlie type. The specimens found by Messrs. Mann 

 and Heath at Ceara and Independencia are all females. 



Tliis is near B. ccesum, Kl., and, indeed, the short descrip- 

 tion of that species applies to our females so far as the head 

 and thorax are concerned, but the puncturation of the elytra 

 •sufficiently distinguishes it. The punctures do not stand 

 close together, but rather far apart, and the rows are not 

 almost equidistant except upon the anterior half of the elytra, 

 being distinctly arranged in pairs beyond the middle. 

 B. glohosum, Cast., the fragmentary description of which 

 renders it entirely unrecognizable, is a larger species. 



The prothorax is of the same form in both sexes, having a 

 longitudinal channel slightly dilated at the front margin and 

 a feeble two-pointed eminence in the depression. The clypeus 

 is smooth in the male and rugosely punctured in the female, 

 and there is a sharp tubercle close to the inner margin of each 

 eye of the male, but scarcely perceptible in the female. 



Like all the species from this region of the earth, this is a 

 dwarfed form. The genus, which is found in all tropical 

 countries, is evidently represented in South America by the 

 allied genus Athyreus, whose head-quarters are in that region. 

 It is interesting to find that in Chili, the only part of South 

 America in which well-developed species of Bolboceras occur, 

 Athyreus is apparently unrepresented. 



Athyreus Jissicollis^ sp. n. 



Castaneo-rufus, elytris pallidioribus, corpore subtus dense lateribiis- 

 que supra parce flavo-birsutis, an tennis etiam ilavis, capita et 

 protborace baud dense granulatis, illo subplano, clypeo carinis 4 

 medio in coruu aouto brevi convergentibus, utroque latere supra 

 autennam elevato et aiigulato ; pronoto medio excaYato sub- 

 laevigato, carinis 2 baud acutis medio angulatis margiiiato, lateri- 

 bus medio profunde fissis, margine antico medio acute tuberculato 

 tuberculisque duobus minutis utrinque positis ; elytris punctato- 

 striatis, iaterstitiis Isevibus ; tibiis anticis 5-dentatis. 



Long. 14 mm. ; lat. 9 mm. 



Hah. E. Brazil: Natal {W. M. Mann). A single 

 specimen. 



