Mr. n. Shelford's SfAuUcs of the Blattidx. 489 



7. Pscudothyrsoccra scutigera, Wlk. 



Pscudomoiis scutigera, Walker, 1. c. p. 212 (1868). 

 $. Sarawak ( Wallaee). 



8. Pseudothyrsoeera xantliophila, Wlk. (Plate XXX, figs. 1 

 and 2). 



Blatta cmntJio2)hila, Walker, 1. c. p. 230 (1868). 

 $. Menado, Celebes ( Wallace). 



Fulvous. Antenna? black, slightly incrassated in basal half 

 and hirsute ; apex of maxillary palpi black. Pronotum trapezoidal, 

 covering vertex of head. Tegmina with thirteen costal veins, 

 discoidal field with seven longitudinal sectors, three of which are 

 given off from the anterior ulnar branch, four from the posterior 

 ulnar, the latter are strongly angled. Supra-anal lamina triangular, 

 produced, the posterior angles bear each a short downwardly directed 

 spine ; sub-genital lamina produced, narrow, covered with a dense 

 pile of long hairs, asymmetrical, the left posterior angle strongly 

 produced, no styles. 



Total length 13 mm. ; length of tegmina 10'8 mm. 



9. Isclinoptera reversa, Wlk. 



Isclinoptera reversa, Walker, 1. c. p. 147 (1869). 

 ^. Singapore ( Wallace). 



Rufo-castaneous. Basal half of antennte, terminal joints of 

 maxillary and labial palpi, fuscous. Pronotum trapezoidal, sides 

 deflexed, not covering vertex of head. Tegmina with nineteen costal 

 veins, discoidal field with ten longitudinal sectors. Wings with the 

 mediastinal vein three-branched, radial vein unbranched, twelve 

 costal veins, ulnar vein with nine branches, three of which go towards 

 the dividing vein. Supra-anal lamina triangular, sub-genital lamina 

 ample, its border notched, two styles. Legs with the genicular 

 angles of the femora, the tiba? and tarsi fuscous, all the femora with 

 genicular spines, formula of apical spines, \, \, ^, anterior margin 

 of front femora with numerous spines, the more distal short and 

 closely set. 



Total length 20 mm. ; length of body 13 mm. ; length of tegmina 

 15 mm. 



10. Isclinoptera crytlirina, Wlk. 



Blatta crythrina, Walker, 1. c. p. 219 (1868). 

 $. Brazil. 

 This is synonymous with Ischnoptera rufa, Br. 



