268 JAMES A. G. REHN. 



Measurements : 



Length of body, ...... 12. mm. 



Length of tegmina, . 

 Greatest width of tegmina, 

 Length of pronotum, 

 Greatest width of pronotum, 



12.2 

 3.5 

 2.9 

 3.6 



Blattella tlelieaf ula Guerin. 



1857, Blntfa (Phyllodromia) delicatula Guerin, in La Sagra, Hist. l'Ue de Cuba, 

 Anim. Artie, p. 346. [Cuba.] / 



Two males; Cabanas, Pinar del Rio, Cuba. May 18 and 21. 

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



Blattella azteca (Saussure and Zehntner). 



1S93, Blatta azteca Saussure and Zehntner, Biol. Cent.-Amer., Orth., i, \>. 43. 

 [Teapa, Tabasco, Mexico.] 



Male and female ; El Yunque, Porto Rico (800 feet elev.). Feb- 

 ruary. (C. W. Richmond.) [U. S. N. M.] Jamaica. [A. N. S. 

 Phila.] 



This species has only been recorded from the type locality. 



The Porto Rican specimen measures as follows : 



Length of body, 9.7 mm. 



Length of tegmina, .... 

 Greatest width of the tegmina (about), 

 Length of pronotum, 

 Greatest width of pronotum, . 



14.5 

 3.2 

 3.5 

 4.5 



Blattella festse (Giglio-Tos). 



1898, B[latta] Festse Giglio-Tos, Boll. Mus. Zool. ed Anat. Comp. Torino, 

 xiii, nr. 311, p. 2. [Gualaquiza, Ecuador.] 



One male; Venezuela. [A. N. S. Phila.] 



This specimen is referred here with some little doubt, as no trace 

 exists of fuscous markings on the tegmina, which are said to be pres- 

 ent in festce, otherwise the specimen agrees perfectly with the latter 

 species. This form is related to B. alaris (Saussure and Zehntner).* 



Blattella pavida n. sp. 



Types: £ and 9; Piedras Negras, Costa Rica. (Schild and 

 Burgorf.) [Cat. No. 6934 and 6935, U. S. N. M.] 



Allied to B. vitrea Brunner,f but differing in the undivided supra- 

 anal plate of the male, the more acuminate character of the same 

 plate in the female, and in the differently shaped costal region of 

 the wing. 



* Biol. Cent.-Amer., Orth. i., p. 43. 



f Nouv. Syst. Blatt., p. 109, tab. ii., fig. 8. 



