230 BRAZILIAN ORTHOPTERA 



from nearly l)lackish to pale buffy, but this is probably due to 

 the immersion in liquid preservative, to which all have been 

 subjected. 



Xeoblattella adspersicoUis (Stal) 



1860. Blatta adspersicoUis St&l, Kongl. Svenska Fregat. Eugenies Resa, Zool., 

 i, p. 308. [Rio de Janeiro, Brazil.] 



Para, Para. (C. F. Baker.) One male. 



Ceara, Ceara. (F. Rocha.) One male. [U. S. N. M.] 



Xeoblattella pellucida (Burmeister) 



1838. Bl[atta] pellucida Burmeister, Handb. der Entom., ii, abth. ii, pt. 1, p. 

 498. [Para, Brazil.] 



Independencia, Parahyba. (Mann and Heath.) Two fe- 

 males. 

 Para, Para. (C. F. Baker.) One male, two females. 



We have tentatively identified this species as Burmeister's 

 form, agreeing as it does with his very brief description, but dif- 

 fering in some features from all the other described species. It 

 is a robust insect belonging near fraterna Saussure and Zehntner. 

 The species has the interspace between the eyes very wide, equal 

 to one and one-half times the depth of the eye, while the supra- 

 anal plate of the female is deeply divided with margining digiti- 

 form processes; the subgenital plate of the female is very slightly 

 produced with the distal margin subsinuato-truncate. The male 

 supra-anal plate is greatly produced and very delicate, with the 

 distal margin broadly rounded; subgenital plate transverse, 

 moderately stout, the styles set in sockets laterad at the bases of 

 the cerci, mesad of which the plate is produced symmetrically in 

 rounded projections, the ventral surfaces of which are strongly 

 convex, and between these projections the margin of the plate is 

 concave. 



Four of the seven females seen by us carry oothecae, their 

 position being vertical with the carina dorsad. 



The ventral surface of the abdomen in the female bears a broad 

 medio-longitudinal bar of shining black, which reaches caudad 

 to all but the extreme margin of the subgenital plate. In the 

 male this is represented by a much narrower bar, which is atten- 

 uate caudad. 



