62 Annals of the Carnegie Museum. 



the head, upper half of the sides of the pronotum and pleurae heavily 

 longitudinally striped with black, the upper edge of which gradually 

 merges with the dorsal color. Genicular area of the hind femora and 

 the base of the tibiae scarcely marked or even tinged with black, 

 fuscous, or ferruginous. Antenna dark olive-green. 



Length of body, 9 , 27 mm.; of pronotum, 5 mm.; of tegmina, 21 

 mm.; of hind femora, 14.5 mm.; of antennae 8.5 mm. 



The type is unique, and belongs to C. JM. Ace. No. 6178. 



Genus Tetrat^nia Stal. 



Tetratcenia St.Il, Recens. Orth., I, pp. 34, 53 (1873); Kirby, Syn. Cat. Orth., 

 Ill, p. 418 (1910). For further bibliography see Kirby, I. c. 



The genus Tetratccnia is composed of several species of medium- 

 sized, highly colored locusts, which, judging from the greatly lamellate 

 edges of the hind tibiae, live among aquatic plants. At least a half 

 dozen species are known. 



112. Tetrataenia phila Rehn. 



Telratania phila Rehn, Proc. Acad. Nat. Sci. Philad., May, 1918, pp. 172-175, 

 PI. I, figs. 25, 27. 



The specimens were at first doubtfully determined as Gryllus 

 siirinamus Linnaeus, but, when compared with the description of 

 Rehn's new species T. phila, their identity with it was at once detected. 

 There are four males and two females. They are labelled as follow^s: 

 one male and a female, "Cayenne, Mch., C. M. Ace. 5897," a male 

 and female "Oucatopi Island, S. M. Klages, June, 1918, Ace. 6178"; 

 one male (imperfect) " Cayari Island, Uassa Swamp, May, 1918, Ace. 

 6177"; and a male, Benevides, Para, Brazil, Oct. 1918, also taken 

 by Klages, C. M. Ace. 6174. 



These specimens are very uniform in both size and color. 



113. Tetrataenia australis sp. nov. 



There is a single mutilated male of a species of Tetratccnia from 

 the Province del Sara, Bolivia, collected by J. Steinbach during the 

 period March-April, 1913, at an altitude of about 350 meters above 

 sea-level. Although the mutilation consists in the absence of both 

 hind legs, it seems worth while to briefly characterize it under the 

 above name, since it seems to come from the most southern locality 

 from which a representative of the genus is recorded. 



