Mr. R. Shelford's Studies of the Blattidie. 233 



Brief diagnoses of these two sub-families may be given 

 as follows : — 



EcTOBllNiE. — Femora spined henccUh ; suh-genitnl lamina 

 of female not provided tvith valves ; supra-anal lamina not 

 quadrate or lohatc ; wings lohen present with a conspicuous 

 triangular apical field or reflected apical area, the ulnar 

 vci7i simple or hifurcatc ; tarsi without pulvilli. 



PhyllodromiiN/E. — Femora spined beneath; suh-genital 

 lamina of female not provided with valves; swpra-anal 

 lamina not quadrate or lohate ; ivings when present with 

 or 'without a triangtdar apical field, never toith a rcficeted 

 apical area, the ulnar vein ramose ; tarsi luithout pulvilli. 



In spite of this new importance attached to the form of 

 the vena ulnaris of the wings only three changes of genera 

 are necessitated, viz. Fscudectohia is transferred from the 

 EctobiinEe to the Phyllodromiinas ; Hcmithyrsoeera, Sss., 

 and Mallotohlatta, Sss. and Zhntn., from the Phyllodro- 

 miinae to the Ectobiina^ Fscudectohia was considered by 

 de Saussure as a division only of the genus Thcganoptcryx, 

 Br., but such species as F. insularis, Sss., and F. liturifera, 

 Stal., in their general facies are quite Phyllodromiine in 

 appearance and moreover have the femora strongly spined, 

 whilst the supra-anal lamina in some species is produced. 

 Hcmithyrsoeera nigra, Br., and H. histrio, Burm., have been 

 actually re-describcd by de Saussure (Mel. Orthopt. ii, 

 pp. 50 and 52, 1869) as Thcganoptcryx indica and Th. 

 jucunda respectively, surely sufficient testimony to the 

 difficulty of discriminating between Ectobiinaa and Phyllo- 

 dromiinoe, if no account is taken of the form of the vena 

 ulnaris alarum. MaJJ otohlatta is placed by de Saussure 

 and Zehntner with some doubt in the Phyllodromiina3, 

 and the sub-family Ectobiina-. is suggested by these 

 authors as the correct resting-place for this interesting 

 genUvS. If the form of the vena ulnaris alarum in con- 

 junction with the extent of the triangular apical field is 

 consulted by systematists, I believe that little or no 

 difficulty will be experienced in deciding into which of the 

 two sub-families a given species is to be placed. Some 

 exceptions, it is true, must be noted ; firstly, the new 

 genus described below on page 247, which, though quite 

 evidently closely allied to Anapleeta, nevertheless has the 

 vena uhiaris alarum ramose ; secondly, Fhyllodromia 



