316 Mr. R. I. Pocock on some femur of this Monotreme 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 Ictidosuckus primcevus, gen. et sp. n. The following are some of the principal measurements of the bones : — millim. Lower jaw : symphysis to coronoid process 94+ Depth of jaw at largest tooth (canine P) 10 Height of largest tooth 5 Antero-posterior diameter of largest tooth 2*3 Length of scapula 73+ Width of upper part of scapula 19 Width in narrow 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. + ) probably 90 Width of femur near middle 8 Length of tibia 94 Width of tibia at lower third 9x5 Pearston, S. Africa. XLI. — Some new Arachnida from Cape Colony. By R. I. Pocock. Order SOLIFUG^E. Genus Solpuga, Lich't. Solpuga Schonlandi, sp. n. J 1 . — Colour a uniform pale yellow, as in 8. 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-h'ngii, but with upper jaw armed with only one minor tooth in front of and remote from the two large distal teeth ; the
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