792 PROCEEDINGS OF THE ACADEMY OF [Nov., 



The other characters, both structure and color, are similar to the 

 type. 



PELMATOSILPHA Dohrn. 



Pelmatosilpha rotundata Scudder. 



1900. Pelmatosilpha rotundata Scudder, Proc. Davenport Acad. Nat. Sci., 

 VIII, p. 93, PI. II, fig. 5. [Texas; Panama.] 



Reventazon river, plains of Santa Clara, altitude 200 meters. De- 

 cember. 1904. [No. 3.] (P. Biolley.) One femal . 



CHORISONEURA Brunner. 

 Chorisoneura flavipennis Saussure and Zehntner. 



Surubres river at San Mateo, altitude 250 meters. Under stones on 

 the border of the river. February, 1905. [No. 8.] (P. Biolley.) 

 One female. 



La Palma, altitude 1,600 meters. May, 1905. In decayed leaves. 

 [No. 11a.] (P. Biolley.) One male. 



Slightly darker, but otherwise inseparable from a female from Tur- 

 rialba, Costa Rica. 



HOLOCOMPSA Burmeister. 

 1838. Holocompsa Burmeister, Handb. d. Entom., II, Abth. II, Pt. I, p. 491. 

 Included Corydia cyanea, collaris and fulva Burmeister, of which 

 collaris {=Blatta nitidula Fabricius) has been selected as the type by 

 Kirby. 



Holocompsa cyanea (Burmeister). 



1838. C[orydia] cyanea Burmeister, Handb. d. Entom., II, Abth. II, Pt. I, 

 p. 169. [St. Thomas.] 



Surubres river at San Mateo, altitude 250 meters. In house. Feb- 

 ruary, 1905. [No. 10.] (P. Biolley.) One specimen. 



This species has previously been recorded in America only from the 

 West Indies. 



BLABERUS ServiUe. 

 Blaberus thoracicus Saussure and Zehntner. 



Reventazon river, plains of Santa Clara, altitude 200 meters. De- 

 cember, 1904. [No. 1.] (P. Biolley.) One female. 



This individual is larger than the measurements given in the original 

 description, and has the pattern of the disk of the pronotum slightly 

 different. 

 Blaberus bioUeyi n. sp. 



Type: 9 ; Reventazon river, plains of Santa Clara, Costa Rica. 

 Altitude 200 meters. December, 1904. [No. 2.] (P. Biolley.) [A. 

 N. S. Phila.] 



