1898.] INSECTS AND ARACHNIDS FfiOM SOCOTRA. 381 



Butler's T. niveus ; another female is more heavily marked ; the 

 third female agrees with his T. eandidus. In the male a few 

 yellow and orange scales form a minute speck proximally, adjacent 

 to the black dot at the end of the cell on the underside of the hind 

 wing. A similar yellowish speck occurs in the females, but tends 

 towards the costal rather than the proximal aspect of the dot. 



Dr. Butler now considers his T. niveus to be the wet-season 

 and T. eandidus the dry-season form of the same species. In 

 reference to the faunistic affinity between Socotra and the 

 Mascarene group (stijjni, p. 377), it is of interest to note that 

 T. aldahrensis Holl, from Aldabra, appears to be the nearest 

 relative of the Soeotran T. nivem '. 



" The male was taken on Dec. 19th in the sandy coast-plain of 

 Grhalansyah. It was rescued from the jaws of a lizard." — E. N. B. 



Catopsilia florella Fabr. (Nos. 43-46.) 



Catopsilia pyrene Swains. ; Butl. Proc. Zool. Soc. 1881, p. 178. 



Four specimens ; 1 d" , 3 $ . The male and two of the females 

 are much worn. 



" Only seen in the plain of Tamarida. Flight strong." — 

 /?. N. B. 



Papilionin.e. 



Papilio bennetti, sp. n. (Nos. 47, 48.) (Plate XXX. tig. 3.) 



Type in Hope Museum, Oxford. 



Two specimens, both probably S , but the abdomen of one is 

 imperfect. These resemble P. demoleus Linn., from the African 

 mainland, but may be distinguished by the following characters : — 

 (1) On the upper surface all the yellow marknigs are much reduced 

 in size, and the secoiid s2iot from the dorsal border of the yellow 

 median chain in the fore wing is more or less 71-shaped, instead 

 of being irregularly rhombic as in P. demoleus. (2) There is a 

 broad black area of almost uniform width between the median and 

 the submarginal chains of yellow spots on the fore wing. The 

 corresponding area in P. demoleus is comparatively narrow, and 

 conspicuously denticulated in consequence of the relatively large 

 size of the median yellow spots. (3) On the under surface the 

 pale snlnnaryinal spots of the hind umig are quadrate, or even 

 elongated in a direction at right angles to the border of the wing ; 

 whereas in P. demoleus they tend to be oblong, with the long 

 diameter parallel to the hind border. The same applies to the 

 series of rudimentary eye-like marks immediately proximal to the 

 yellow submarginal row. Another feature which is probably 

 distinctive is the fact that in the eye-like mark within the cell on 

 underside of the hind wing the blue edging with its accompanying 

 buff crescent extends only along the posterior side of the tri- 

 angular black patch, instead of being continued along two sides, 

 the posterior and the dorsal, as in P. demoleus. An approach to 



» See Butler, Ann. & Mag. Nat. Ili-t. l«07. xx. p. 464. 



Proc. Zool. Soc— 1898. Xo. XXVI. 2Q 



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