1898.] INSECTS AND ARACHNIDS FROM SOCOTRA. 391 



by the pattern on the abdomen, of which the form also is different. 

 In S. dufourii the pale posterior extremity shows on its posterior 

 border five distinct pale points ; the present species shows only 

 three, and those somewhat irregularly defined. The present Spider 

 is also of much larger size than either of those mentioned, the 

 length given of ,S. dufourii being 12 millim., and that of S. madajas- 

 cariensis 11 millim., whereas Selenops diversus measures in length 

 10 lines, or nearly as possible 21 millim. 



EXPLANATION OF THE PLATES. 

 Plate XXX. 



Fig. 1. Byhlia hoydl, sp. u., J , p. 375. 

 la. ,, „ >, c?! underside. 



2. „ „ „ 2. 



2a. ,, „ .,2, underside. 



.3. Papilio hennetti, sp. n., cT, p. 38L 

 4. Poecilocerus sokutranns, sp. nov., (^ p. 381. 



Plate XXXI. 



Fig. L Selenops diversus, sp. n., J, p. 390. 



1 a. „ „ „ Genital apertures. 



2. Nephila hennetti, sp. n., J, p. 387. 



2a. „ „ „ Genital apertures. 



3. Gasferacantha soda/is, sp. n., ^ > P- 388. 



4. Tetragnatha bot/di, sp. n., p. 389. Cepbalothorax and eyes. 

 4a&4i. „ „ „ Falx and fang in two positions. 



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