826 K. I. POcocK 



Loc. Village of Thao (Garin Ghecu 1200-1400 m.). Two spe- 

 cimens cf^ and 9 obtained by Sig. L. Fea. 



Resembles Orlhomorpiia doriae in tlie majority of its characters, 

 but differs slightly in colour and also in the shape of its keels, 

 and the greater visibility of the pore from above. 



Dedicated to Sig. F. Silvestri. 



SYNOPSIS OP THE PRECEDING SPECIES OF ORTHOMORPHA. 



a The constiiction between the cylindrical and the keel- 

 bearing halves of the somites very conspicuously beaded, 

 a' Terga with a wide median flavous baud; marked with 



a strong longitudinal groove bisulcata. 



b^ Terga black with yellow keels and no strong longi- 

 tudinal groove, 

 a' Margins of the keels strongly denticulate and 



posterior angles acutely produced .... li'dlfera. 

 b- Margins of keels not strongly denticulate and 



posterior angles less acutely produced . . . coarctata. 

 b Constriction between the two halves of the somites not 

 conspicuously beaded, 

 a' Body narrow, about ten times as long as wide ; 



sternal area of last pair of legs coxiform; keels small coxlsternis 

 6* Body wider, less than ten times as long as wide, 

 sternal area of last pair of legs not so deeply divided; 

 keels larger. 



a* Upper surface of the segments ornamented with a 

 pair of yellow or reddish longitudinal bands for- 

 med of spots or stripes; keels yellow, 

 a' The bands reduced on each somite to a pair 

 of subspherical yellow spots situated in front 



of the sulcus; keels small pardalis 



b^ The yellow bands continuous, extending over 

 the whole of the keel-bearing portion and 

 over the cylindrical portion of the terga, 

 a" Keels quite small, without a trace of an- 

 terior border or angle ; the posterior angle 

 acute but small and spiniform and only in 

 the hinder third of the body far surpassing 

 the line of the posterior border of the terga comotti 

 i" Keels larger their posterior angles long, 

 strong and spiniform. 



