1920.] F. F, lyAiDLAW : A new species of Pseudophaea. 



27 



The males of the section may be differentiated as follows : — 



A. Large species, hinder-wing exceeding 30 mm. in length ; 

 its length bearing the ratio to its greatest breadth of 

 about 5:1. 

 a. Length of hind-wing nearly 4.0 mm. Syntho- 



racic colour pattern similar to that of female. 



No longitudinal dorsal mark on segments 2-'? 



of abdomen 



Length of hinder-wing about 32 mm. Syntho- 

 racic colour pattern shows specialization when 

 compared with that of the female. A light 

 longitudinal line on segments 2-3 of abdomen. 



Smaller form. Hinder-wing less than 25 mm. in length. 

 Its length bearing the ratio 4. : i to its greatest breadth. 

 Colour pattern of synthorax specialized 1 ; black 

 above, blue at the sides 



a. Apical mark of hinder-wing about three-sevenths 

 of wing-length 



/3. Apical mark of hinder-wing about two-fifths of 

 wing-length 



P. dispar, 

 Ramb. Nilgiri 

 Hills. 



P.fraseri, n. sp. 

 W. Coast of 

 India. 



P. impar, Selys. 



Sub-sp. impar, 

 Selys, Malacca. 



Sub-sp. inae- 



quipar, Selys, 



Borneo. 



Measurements of hinder- wings of species belonging to the 

 section. 



Base of hinder- 

 wing to nodus. 



P. dispar, Ramb. ... 175 mm. 

 P.fraseri, n. sp. ... 12 mm. 

 P. impar, Sdys ... 10 mm. 



i The colour pattern of the synthorax of the females of the two species I have 

 examined is, as will have been inferred, very much alike. It resembles also that 

 found in Bayadera. I regard this pattern as probably primitive for the genus. 



