316 Mr. R. I. Pocock on some 



femur of this Monotrerae were a rounded instead of a flattened 

 bone, the general resemblances between it and that of the 

 fossil form would be very marked. The lower end of the 

 femur especially is flattened and quite Monotreme-like. 



The tibia and fibula are both long simple bones, con- 

 siderably longer than the radius. The fibula is only about 

 half the thickness of the tibia. 



As soon as a thorough examination has been made of the 

 more fragmentary remains, and the more perfect elements 

 more thoroughly cleared of matrix, an endeavour will be made 

 to describe in detail, with figures, the various remains of this 

 primitive type, for which I propose the name Ictidosuchus 

 priincBvus, gen. et sp. n. 



The following are some of the principal measurements of 

 the bones : — 



millim. 



Lower jaw : symphysis to coroDoid process 94+ 



Depth of jaw at largest tooth (caniue ?) 10 



Height of largest tooth 5 



Antero-posterior diameter of largest tooth 2*3 



Length of scapula 73+ 



U'idth of upper part of scapula 19 



Width in nan'ow middle region 9 



Width at base 28 



Length of humerus (72 millim. +) probably 82 



"Width of humerus near middle 9 



Length of femur (86 millim. 4-) probably 90 



Width of femur near middle 8 



Length of tibia 94 



Width of tibia at lower third 9 x o 



Pearston, S. Africa. 



XLI. — Some nevj Arachntda from Cape Colony. 

 By R. I. Pt)COCK. 



Order SOLIFUG^. 

 Genus SoLPUGA, Licht. 



Solpuga Schonlandi, sp. n. 



J . — Colour a uniform pale yellow, as in S. venator ; 

 width of head less than tibia of palp and than patella or tibia 

 of fourth leg. Form of mandible recalling that of S. Dar- 

 Jingii, but with upper jaw armed with only one minor tooth 

 in front of and remote from th^ two large distal teeth ; the 



