JAMES A. G. REHN 283 



taxonomic value, as extremes of these conditions and interme- 

 diates are in a series of fifteen males and four females from Bar- 

 tica, British Guiana, now before us. We are unable to find in 

 our series any appreciable difference in the surface of the body, 

 which is said to be smoother in hrunneri. The immature females 

 are in different instars. 



LOCUSTINAE 

 Prionolopha serrata (Linnaeus) 



1758. [Gryllus {Bulla)] serratus Linnaeus, Syst. Nat., X cd., p. 427. ["Indiis."] 

 Para, Para. (C. F. Baker.) One male. 



Diedronotus angulatus (St^l) 



1873. T[ropinotus] angulatus St^l, Ofv. Kong. Vet.-Akad. Forh., 1873, no- 

 4, p. 52. [Bahia, Brazil.] 



Cear^, Ceara. (W. M. Mann.) One male. 



Baturite Mountains, Ceard. (W. M. ]Mann.) One male, 



one female. 

 Natal, Rio Grande do Norte. (W. M. Mann.) One male. 

 Ceara-Mirim, Rio Grande do Norte. (AV. M. Mann.) Two 



males, three females, one juv. male. 

 Baixa Verde, Rio Grande do Norte. (W. M. Mann.) One 



female, one juv. female. 

 Independencia, Parahyba. (Mann and Heath.) Three 

 males, four females. 

 These specimens have all been immersed in alcohol and in 

 consequence have lost much of their original coloration. Cer- 

 tain individuals — all of the Independencia males, one of the 

 Ceard-Mirim males and the males from Ceara and Baturite 

 Mountains, and one Ceara-Mirim and one Independencia female 

 — have a strongly contrasted pattern sprinkled with umber points, 

 more or less thickly according to the incUvidual. The broad 

 infuscate bars along the lateral portions of the pronotal disk are 

 indicated in several of the pale females, as is frequently the case 

 in D. discoideus. 



Brunner's D. mexicanus is closely related to angulatus, more 

 so than to D. discoideus. The present records, with that of the 

 typical material and one from Bonito, Pernambuco, Brazil, are 

 the most eastern for the species, which ranges southward to Para- 

 guay and northern Argentina and westward to Peru. 



TRANS. AM. ENT. SOC, XLII. 



