260 Mr. R. Shelford's Studies of the Blattid^. 



pronotum is strongly produced backwards. Tegmina with the 

 mediastinal area, except at the base, and eight oblique costal streaks, 

 testaceous. The sub-genital lamina and the discs of the sterna of 

 the three preceding segments bright rufous. Coxte white-edged. 

 Cerci black, not spatulate. 



Total length 12 mm. ; length of tegmina 10 mm. 



One example {W. F. H. Roscnhcrg coll. Nov. 1896). 

 (Oxford Museum.) 



The species appears to be quite distinct from all tbe 

 other black species of this geuus; it approaches P. 

 hiduosa, Sss., more closely than any other. 



21. P. bicolor. n. sp. (Ecuador, Paramba.) (Plate XVI, 

 figs. 12, 12a; and Plate XIV, fig. 7.) 



(J. Head and antenna; (mutilated) black. Pronotum orange-red 

 with some very obscure darker markings. Tegmina fuscous with 

 the costal margin narrowly fulvous for two-thirds of its length. 

 Wings fusco-hyaline. Abdomen bright luteous except the last five 

 terga and the sub-genital lamina which are black ; on the 6th 

 tergum is a prominent mamillary tubercle covered with an orange 

 pubescence and with a small opening on each side. Cerci black with 

 the two terminal joints white. Coxae and trochanters bright luteous ; 

 the 2nd and 3rd pairs of femora bright luteous with the apices 

 fuscous ; the 1st pair of femora, the tibiae and tarsi fuscous ; the 

 tibial spines rufous. 



Length of body 13-5 mm. ; length of tegmina 14 mm. 



One example ( IV. F. H. Rosenberg coll. Mar. 1897). 



This species is quite distinct fi^om all the known forms. 

 The opening of the so-called repugnatorial glands on the 

 6th abdominal segment is remarkable and unlike any other 

 known to me. The 7th abdominal tergum is almost 

 entirely covered by the 6th tergum, the posterior border 

 of which is incised. 



II. Cerci spatulate. 



22. P. femoralis, Wlk. (Brazil, Rio de Janeiro.) 



Pscudomops fcmoralis, Walker, 1. c. p. 81, n. 18 (1868). 

 Thyrsocera crinicornis, Brunner, 1. c. p. 126, n. 21 (1865). 



Brunner's description of P. crinicornis applies with 

 great exactitude to this species, four examples of which 



