1906.] NATURAL SCIENCES OF PHILADELPHIA. 17 



March 6-19, 1905. Id" (^,10 9 9. (Foster, Hebarcl Coll.) Asun- 

 cion, Paraguay. 2 d^c^, 2 9 9 . (A. N. S. P.) 



The specimens from Corumba are slightly larger than individuals 

 of the same sex from the other localities. Considerable variation 

 also exists in the form of the fastigium, the 9 from Chapada having 

 it rather broad, but otherwise inseparable, while one individual from 

 Sapucay has the same portion more acute than usual, in a considerable 

 measure approaching 0. minor. The tips of the tegmina are sharper 

 and more acute in individuals from Chapada, Corumba and Sao Paulo 

 than in Asuncion specimens, but the series from Sapucay includes 

 practically both extremes. Some specimens have the dorsal dark 

 lines absent and the coloration but little varied. 



The species has previously been recorded from Santos, Brazil, 

 Formosa and Resistencia nel Chaco, Argentina. 

 Orphula minor (Giglio-Tos).-' 



1897. M[etaleptea] minor Giglio-Tos, BoUett. Mus. Zool. Anat. Comp. 



Torino, XII, No. 302, p. 23. [San Lorenzo, Jujuy, Argentina; Caiza and 



Aguairenda, Bolivian Chaco.] 



Caiza, Bolivia. (Borelli, A. N. S. P.) One 6". 



Chaco. (Borelli, A. N. S. P.) One 9 . 



These authentic specimens, received from the Turin Museum, show 

 that the species is a member of the genus Orphula and closely related 

 to 0. pagana. From the latter species it differs in the slenderer head, 

 with less prominent and somewhat longer eyes, and the more acute 

 fastigium. 



MERMIRI^. 

 SYRBULA Stai. 



The genus Syrhula presents two extreme types, one represented by 

 admirahilis, and the other by montezuma and eslavoe. These extremes 

 might with justice be separated, as has provisionally been done by 

 the author (i.e., subgenus Hems), but for the presence of a type like 

 S. acuticornis, which is clearly an annectant form. 

 Syrbula montezuma (Saussure). 



The specimens from Cuernavaca, ^Mexico, previously recorded by 

 the author as *S. valida and eslavoe, and from La Joya, San Luis Potosi, 

 Mexico, are referable to this species, which is closely related to S. 

 eslavoe and differs chiefly in the less constricted lateral carinae of the 

 pronotum. 



* Bolivar's Orphula jucunda {Adas Soc. Espan. Hist Nat., XXV, p. 15) from 

 the Rio Atalapo is probably a member of this genus, but apparently quite dis- 

 tinct from either 0. pagana, with which it was originally compared, or 0. minor. 



2 



