1904.] NATURAL SCIENCES OF PHILADELPHIA. 57 



abdominal segment exhibits no such character as "anguhs posticis in 

 dentem sat longum productis instructo/' and for that reason I have 

 queried the determination, ahhough the specimen fully agrees other- 

 wise . 



Genus CALYNDA Stdl. 

 1875. Calynda Stal, Recensio Orthopterorum. Ill, pp. 24 and 78. 

 Type. — C. bicuspis Stal. 



Calynda bicuspis StM. 



187.5. C[alynda] hicuspis Stal, Recensio Orthopterorum, III, p. 78. [Chi- 

 riqui.] 



One female; Tucurriciue, Costa Rica. (Schild and Burgdorf.) 

 [U. S. N. M.] 



This specimen is considerably larger than Stal's type, but agrees 

 absolutely with the diagnostic characters given by him. A character 

 apparently overlooked by Stal is the presence of a rounded foliaceous 

 lobe on the basal portion of the inferior lateral carinas of the median 

 femora. 



Genus BOSTEA StM. 



1875. Bostra Stal, Bihang till K. Svenska Vet. Akad. Handlingar, bd. 2, 

 No. 17, p. 6. 



Type. — Bacteria turgida Westwood. 

 Bostra incompta n. sp. 



Type. — d^; San Carlos, Costa Rica. (Schild and Burgdorf.) [Cat. 

 No. 6,977, U. S. N. M.] 



Apparently closer related to B. turgida (Westwood) than to B. dor- 

 suaria Stal, From turgida it differs in the very much greater size and 

 the shape of the terminal abdominal segments. From dorsuaria it 

 can readily be distinguished by the unarmed head and smaller size. 



Size large; form very slender and elongate ; surface glabrous. Head 

 rather short, very slightly longer than the pronotum, subequal in 

 width ; eyes circular, not prominent ; antennae about equal to the body 

 in length, basal joint oblong, scarcely depressed. Pronotum subequal 

 in width, half again as long as broad. Mesonotum slightly shorter than 

 the median femora, slender and subequal except for a slight posterior 

 expansion. Metanotum (with median segment) not cjuite three- 

 fourths the length of the mesonotum, scarcely wider than the meso- 

 notum; median segment equal to over two-thirds the length of the 

 metanotum itself. Abdomen with the six basal segments elongate, 

 all at least three times as long as broad, the length of segments decreas- 

 ing toward the apex; seventh dorsal segment somewhat bullate. 



