BLATTA. 43 



Var. minor ? Magis testacea ; alia venis subfuscis. c? • 



$ . Long. 15 ; elytr. 17-5, latit. elytr. 5-75, pronot. 4-2, latit. pronot. 6 miUim. 



S . Long. 15 ; elytr. 19, latit. elytr. 5-5, pronot. 4, latit. pronot. 6 millim. 



Hab. Mexico (Sumichrast), Atoyac in Vera Cruz (Schumann), Tabasco (H. H. 

 Smith). 



Comp. Blattd chichimeca (no. 16). 



3. Blatta brunneriana, Sauss. 



Blatta brunneriana, Sauss. Rev. et Mag. de Zool. 1868, p. 98. 7 ; Miss. Scient. Mex., Orthopt. 

 p. 32. 8, 1. 1. fig. 20 (1870). 

 Hab. Mexico, Eastern Cordillera (Sumichrast). 



4. Blatta delicatula, Guer. 



Blatta delicatula, Guer. Ins. de Cuba (Ramon de la Sagra), p. 346 ; Sauss. Mem. Mex., Blatt. 

 p. 104. 43, fig. 17 ; Miss. Scient. Mex., Orthopt. p. 33. 9. 



Hab. Mexico. — Antilles, Cuba. 



5. Blatta azteca, sp. n. 



5 . Testacea. Pronotum ellipticum, translucidurn, disco ochraceo vel leviter brunneo-irrorato, vitta media 

 pallidiore obsoletissima. Elytra abdomen superantia. Ala3 subhyalinse, venis campi antici et intermedii 

 ferrugineis, campus anterior dimidia parte apicali vel apice ferruginescente ; venis costalibus 6-7 primis 

 apice longe leviter incrassatis ; vena ulnari 4-5-ramosa, ramis partim furcatis. Campus intermedius ad 

 venas ferruginescens. Campus radialis subvitreus, venis brunneis. Abdomen supra fuscescens. Lamina 

 supra-analis distincte trigonali-incisa, ultimum segmentum ventrale prominulum, apice frequenter com- 

 pressum. 

 Long. 11-8 : elytr. 14, latit. elytr. 4, pronot. 3*25, latit. pronot. 4-8 millim. 



Hab. Mexico, Teapa in Tabasco (H. H. Smith). 



This species is very closely allied to B. brunneriana. It has the pronotum somewhat 

 larger and the wings not infuscated. In B. brunneriana the first nine of the venae 

 costales are much more thickened and clavated, being terminated by elongated brown 

 thickenings. B. azteca also much resembles B. alaris ; but the wings are not reticulated 

 with brown colour, and the venae costales are more thickened. The second branch of 

 the vena mediastina forms three vense costales, and the lamina infra-genitalis is much 

 produced beyond the last ventral segment. 



6. Blatta alaris, sp. n. 



5 . Testacea. Caput inferius fusco varium. Oculi remoti. Pronotum ellipticum, disco flavicante, punctis 

 nonnullis fuscis. Elytra abdomen superantia, parum elongata. Alae venis fuscis ; campo anteriore fusco- 

 reticulato, venis costalibus parum numerosis, apice vix incrassatis; vena ulnari 3-4-ramosa. Pedes 

 testacei. Abdomen rufo-fiavescens, leviter fusco-umbratum, marginibus pallidis. Lamina supra-analis 

 late trigonalis, apice brevissime fissa, ab ultimo segmento ventrali parum superata. Cerci graciles. 



Long. 11-25 j elytr. 11, latit. elytr. 4, pronot. 3, latit. pronot. 5 millim. 



Gg2 



