Sept., 1904 ] Caudell : Orthoptera from Paraguay. 181 



exhibit more or less variation in this respect. Besides these two speci- 

 mens from Paraguay and the type of bormansi from the Galapagos 

 Islands, the National Museum contains specimens of this species from 

 California, Arizona and Florida in the United States and from Porto 

 Rico in the West Indies. The synonymy of bormansi with azteca is 

 based upon a study of the above material. The United States speci- 

 mens were identified several years ago by Prof. Scudder who critically 

 examined them at my request. He pronounced them to be azteca and 

 did not attempt to refute my statement that they were specifically 

 similar to the type of his bormansi. These United States specimens 

 are females and measure 11. 5 to 13.5 mm. in length exclusive of the 

 forceps, and the banding of the femora and the number of pallid seg- 

 ments of the antennae are quite variable. In both size and coloration 

 these two forms intergrade and I feel safe in the establishment of their 

 synonymy. The identity of Kirby's A. anfcnnafa from Bermuda with 

 azteca was pointed out by Bormans. 



Immature specimens of some species of Psaiis bear a strong resem- 

 blance to certain apterous species of this genus and a careful study is 

 often necessary to separate them. 



Labia paraguayensis, new species. 



Feviale. Brown, paler below ; legs pale yellowish. Antennse 11 to 12 jointed, 

 brownish, unicolorous. Pronotum scarcely as broad as the head, subquadrate, slightly 

 broader than long, the lateral borders very thin. Elytra slightly longer than the pro- 

 notum, unicolorous; wings aborted. Abdomen flattened, broad, widened in the mid- 

 dle, the third and fourth segments of the female with lateral folds, the fourth segment 

 of the male similarly furnished. Forceps of the female moderately stout, triquetrous, 

 contiguous at the base, slightly curved, especially at the tip where the points cross a 

 little when the forceps are closed; inner margin straight to near the tip and with 

 several dull unequal serrations, contiguous to the tip when closed ; forceps of the male 

 subcylindrical, moderately and quite uniformly incurved, widely separated at the base 

 and armed on the inner edge at the middle of the apical half with a small tooth and 

 at the middle of the basal half with an angular projecting shoulder, small but distinct. 

 Pygidium of the male prominent, quadrate, the truncate tip slightly notched at each 

 side. 



Length, exclusive of the forceps, J and 9' 7-5 n""™-; forceps, $, '2..'2t^ mm., 

 9 , 1.75 mm. 



Two females, February ; one female, one male, no date. 

 Type. — No. 8025, U. S. National Museum. 



Apterygida linearis Eschscholtz. 



Forficula linearis Esch., Entomogr., i, 81, 1822. 



Forficitla ianiafa Dohrn, Stett. Ent. Zeil., xxiii, 2jO, 1862. 



