222 PROCEEDINGS OF THE ACADEMY OF [PaRT II 



in large part from the vicinity of Rio de Ja-neiro, type locality of 

 many of the older species described from South America. 



As a result, the present study has aided greatly in clearing up the 

 identity of a number of older names. Several of these are of great 

 importance in that they represent genotypic species. Such are; 

 Neoblattella adspersicollis, Liosilpha pumicata, Phoraspis picta, 

 Petasodes mouffeti, Monastria biguttata, Brachycola tuherculata and 

 Parahormetica bilohata. 



The 155 specimens treated, represent 27 genera and 38 species, 

 of which 3 genera and 9 species are new. 



Among the new species described, Dasyblatta thmimasiairomFara, 

 and Oulopteryx meliponarum from near Passa-Quatro, Minas Geraes, 

 represent extremely unusual types. The latter species is of addi- 

 tional interest, in being the first Blattid known to be symbiotic 

 with bees. 



ECTOBIINAE. 



Anaplecta bivittata Brimner. 



1865. A [naplecta] bivittata Brunner, Nouv. Syst. Blatt., p. 63. [ 9 , Brazil.] 



Tijuca, Rio de Janeiro, Brazil, 800 to 900 meters, 1 cf. 



Though in a poor state of preservation, the present specimen is 

 seen to agree closely with a male, previously recorded by Rehn, 

 from Para, Brazil. The squarely truncate tegminal maculation is 

 a striking feature of coloration in the species. Slightly darker 

 transverse suffusions across the face, suggested in these specimens, 

 may prove to be a more conspicuous feature of coloration in better 

 preserved material. Length of body 5.6, length of tegmen 5.3 mm. 



Anaplecta xanthopeltis new species. Plate IX, figures 1 and 2. 



This insect appears to be closely related to A.fusca Shelf ord, des- 

 cribed from a unique female from Cachabi, Ecuador. The present 

 male differs from the description of that species in the larger size, 

 pale head and pronotum and in features of wing venation. 



In the present specimen the interval between the discoidal vein 

 and its branch caudad^^ is wider and is crossed by three transverse 

 veinlets, this area being very weakly defined distad, the branching 



^^ In Shelford's description oifusca termed the "medio-discal'' field, though the 

 area so termed elsewhere and designated as the medio-discoidal field by us, is 

 shown by that author's figure oi fusca to be the area caudad of that to which he 

 has referred. 



