414 



PROCEEDINGS OF THE ACADEMY OF 



[June, 



The type represented by centurio is especially interesting as all the 

 species are in hand and their differential characters easily seen. Driiry's 

 centurio is quite distinct from the others and need not be considered 

 as its size is diagnostic. The three others — auricornis, pulc?iella* and 

 varipennis — can be easily separated by the outline of the dorsal aspect 

 of the pronotum, jmJchella representing an extreme broad, inflated 

 type with an almost rectangulate caudal angle (fig. 14), varipennis 

 (fig. 12) representing the other extreme with the pronotum compressed 

 and the caudal angle strongly and acutely produced. Between these 

 two extremes is auricornis, presenting a rather broad pronotvmi with 

 the angle acute but not long produced (fig. 13). 



Fig. 12. 



Fis. 13. 



Fig. 14. 



Fig. 12. — T(eniopoda varipennis, dorsal view of female type. Fig. 13. — T. auri- 

 cornis, ditto of female from Alta Mira, Tamaulipas. Fig. 14. — T. pul- 

 chella, ditto of female from Jalapa, Vera Cruz. 



CHROMACRIS Walker. 

 Chromacris trogon Gerstaecker. 



1873. Romalea trogon Gerstaecker, Stett. Entom. Zeit., XXIII, p. 186. 

 [Costa Rica.] 



San Carlos, Costa Rica. (Schild and Burgdorf.) [U. S. N. M.] 

 Five males, three females. 



Pozo Azul de Pirris, Costa Rica. May-June, 1903. (C. F. Under- 

 wood.) [A. N. S. Phila.] One male. 



Carrillo, Costa Rica. [Hebard collection.] Seven males, two fe- 

 males. 



This series is remarkably uniform in coloration. 



EHICNODERMA Gerstaecker. 



1889. Rhicnoderma Gerstaecker, Mittheil. Naturwiss. Ver. Neu-"\'orpomm. 

 Riigen, XX, p. 28 



Type. — R. olivaceum Gerstaecker. 



* This is the species previously recorded bv mvself as T. centurio; see Trans. 

 Amer. Ent. Soc., XXVII, p. 228 f XXIX, p. 12. 



