412 ENTOMOLOGICAL NEWS [Nov., '12 



being, in this respect, exactly like the macropterous ones. All 

 of those in the latter condition have the tibiae with the perfo- 

 rations on both faces. In consequence it is apparent that the 

 presence or absence of the perforation of the cephalic face of 

 the cephalic tibiae is variable in individuals which are clearly 

 referable to the same species, hence of neither generic or spe- 

 cific importance in this connection.* 



The two species of Anaxipha found within our limits are 

 closely related and from the material in hand we find the fol- 

 lowing characters by which the two can be separated : 



A. Ovipositor of female longer, one-half as long as the caudal 

 femora ; pronotum less decidedly transverse ; caudal femora more 

 elongate, of male longer than tegmina; tympanum of male tegmina 

 with the length little greater than the width exiguaf 



AA. Ovipositor of female shorter, not one-half as long as the cau- 

 dal femora; pronotum very decidedly transverse; caudal femora 

 shorter, of male shorter than the tegmina; tympanum of male with 

 the length at least one and one-half times the width. . .pulicariaj: 



In addition to these features, pulicaria is always uniformly 

 paler and less maculate, the external face of the caudal femora 

 always lacking the medio-longitudinal line which is almost in- 

 variably found in exigua, while the generally pronounced facial 

 markings of exlgua are almost never indicated in pulicaria. 



Females of pulicaria are at first glance liable to be confused 

 with that sex of Falcicula hebardi Rehn, but the much more in- 

 flated and flea-like caudal femora and slenderer ovipositor of 

 the latter are excellent characters to separate the two. The 

 males, however, are very easily separated by the absence of a 

 tympanum on the tegmina in Falcicula. 



* The presence or absence of a tympanum on the cephalic face of 

 the cephalic tibiae has been shown by Saussure (Melang. Orthopt. 

 II, pp. 313, 366) to be variable in two genera of Gryllinae Gryllus and 

 Cry I lodes. 



t Acheta exigua Say, Jour. Acad. Nat. Sci., Phila., IV. p. 309, 1825. 

 ["Missouri, near Konza Indian Village," which from the original 

 charts of the expedition is found to be about eighty miles west of 

 Kansas City, on the Kansas River, in Kansas.] 



$ Gryllus pulicarius Burmeister, Handb. der Entom., II, abth. II, 

 pt. I, p. 732, 1838. [Jamaica.] For the facts in regard to the use of 

 this name see the author's remarks, Proc. Acad. Nat. Sci., Phila., 

 1912, p. 274. 



