338 Mr. E. I. Pocock on Scolopendra vallda, Lucas. 



gin of each pleura midway between the anal tevgite and the 

 process. 



Proximal tarsal segment of all the legs, except those of the 

 anal somite, always armed with a spur. 



Claws of all the legs always armed with two spurs. 



Femora of all the legs, except those of the nmeteenth, 

 twentieth, and twenty-tirst somites, unarmed. Femora of 

 legs of the nineteenth somite always armed above at the 

 apex with one or two spines. Femora of legs of the twentieth 

 somite always armed above at the apex with two or three 

 spines, which in larger forms are borne upon a longer process. 

 An accessory spine may be present upon the middle of the 

 upper surface of the femur. 



Femora of anal somite furnished mostly with about 15 or 

 18 spines arranged in longitudinal series typically as fol- 

 lows : — 3 . 2 on the upper surface, 3 on the upper inner mar- 

 gin, 2 on the inner surface, 2 . 3 . 2 on the lower surface ; but 

 since each series is liable to variation either in the number 

 or position of any or all of its constituent spines, it follows 

 that so many modilications of this typical arrangement are 

 possible that it rarely happens that two individuals are 

 exactly alike, or that one individual presents the same 

 arrangement of spines upon the femora of the right and left 

 sides. Femoral process conspicuous, armed with from two to 

 six spines, but for the most part with five — two larger at the 

 apex, three smaller nearer the base. Length of anal legs 

 varying from one fourth to one seventh of the length of the 

 body. Thickness of the femur or of the patella varying from 

 one third to one half of its length. The patella not armed 

 with spines. 



Length of largest specimen from Gran Canaria 109 millim. 

 „ „ „ Bushire 113 „ 



„ ,, „ Socotra 190 „ 



To redescribe the forms most nearly allied to Sc. vali'da, 

 Lucas, were waste of time and space, since excellent descrip- 

 tions of them may be found in the papers of Dr. Meinert, 

 Dr. Kohlrausch, and von Porath, to which references are 

 given. 



Scolopendra prasina, C. Koch. 



1863. Scolopendra prasina, C. Koch, Die Myriopoden, ii. p. 23, fig. 146. 

 1876. Scolopendra nitida, Poiatb, fev. Vet. Akad. Haudl. Bib. iv. 

 no. 7, p. 8. 



