( XXXV ) 



" In all these characters frohenia agrees closely with the 

 other yellow-marked Neptis of the African islands that I have 

 examined, viz. : N. dmnetorum, Boisd., N. inayottensis, Oberth. 

 and N. comorarum, Oberth." 



Dr. Karl Jordan kindly consented to investigate the 

 evidence of affinity founded upon the male genital organs. 

 The following account prepared by him entirely supports 

 Mr. Marshall's conclusions, although I was at the time un- 

 fortunately not able to submit either coviorarum, or viayottensis 

 to dissection. 



^'Neptis sackcva, Boisd., and its nearest allies differ fi'om the 

 majority of the species of Neptis in one very conspicuous 

 character in the genital organs. The clasper of these species 



saclaoa (Madagascar). 



is divided by a narrow sinus at the apex into two lobes. 

 The ventral lobe (Fig. A, a) is bi'oad and rounded, being 

 almost the same in the' various allies of saclava. The dorsal 

 lobe (h), on the other hand, exhibits easily recognised specific 

 differences. This lobe is somewhat twisted. In saclava 

 (Fig. A) the top of the dorsal lobe lies over the outer surface 

 of the ventral lobe, not being visible in a view from the inner 

 side as hei-e represented. Dorsally the lobe bears a thin ridge 

 which is moi'e or less denticulate. This ridge pi;ojects more 

 in Continental specimens {N. saclava maiyessa) than in 

 Malagasic ones {N. s. saclava, Fig. A). The specimens 

 dissected show some individual variability in the shape of the 

 lobe. 



