280 J. A. G. KEHN. 



Periplaneta americana (Linnaeus). 



1788, [Blatla] americana Linnsens, Syst. Nat., s ed., p. 424. ["America."] 



One male and one female ; Luquillo, Porto Rico. March 4, 1900. 



(C. W. Richmond.) Nuevo Gerona, Tsla de Pinos, Cuba. July 1, 



1900. (Palmer and Riley.) [U. S. N. M.] 



Periplaneta australasia? (Fabricius). 



1793, [Blafta] australasise Fabricius, Ent. Syst., ii, p. 7. [" Capta freqens in 

 nave e raari pacifico & regionibus Australasia? revertente."] 



Eleven specimens; six males (two immature), five females; San 

 Carlos, Costa Rica. (Schild and Burgdorf.) [U. S. N. M.J El 

 Guama, Pinar del Rio, Cuba. March 5. (Palmer and Riley.) 

 [U. S. N. M.] San Diego de los Banos, Pinar del Rio, Cuba. 

 April 22, 1900. (Palmer and Riley.) [U. S. N. M.] 



One specimen from San Carlos bears a very great superficial 

 resemblance to P. americana. 



Subfamily Chorisoneukin,e. 



Genus CHORIiONEURA Brunner. 



1865, Chorisoneura Brunner, Nouv. Syst. Blatt, p. 255. Type. — By selection,* 

 C. nigrifrons (Serville). 



Chorisoneura flavipeuiiis Saussure and Zehntner. 



1893, Chorisoneura flavipennis Saussure and Zehntner, Biol. Cent.-Amer., Orth., 

 i, p. 81. [Atoyac, Vera Cruz, Mexico.] 



Three specimens; one male, two females; Turrialba, Costa Rica. 

 (Schild and Burgdorf.) [U. S. N. M.] 



As the female of this species has never been diagnosed, I have 

 appended a description of the same. 



Size small ; form elongate ovate. Head projecting somewhat beyond the pro- 

 notum ; interspace between the eyes greater than that between the ocelli ; eyes 

 reniform ; antennae reaching to the apex of the tegmina. Pronotum sub-ovate, 

 transverse; anterior and posterior margins rotundate-truncate, lateral margins 

 rounded, the greatest width being posterior; dorsum flat, lateral portions very 

 slightly depressed. Tegmina sub-hastate, apex acute; basal field reaching to the 

 middle of the tegmen, sub-scabrous; discoidal vein practically straight from near 

 the base to the apex, median vein parallel for a greater part the length of the 

 tegmina, median rami comparatively few in number and rather obscure; anal 



* The originally included species were: 



nigrifrons, discoidalis, 



flavoantennata, mysteca, 



sordid". 

 Of these nigrifrons can very rationally be selected as the type, as Brunner gives 

 a figure of this species. 



