440 Mr. R. I. Pocock on 



second antero-posteiiorly constricted in the middle and, like 

 the third, with a pair or two pairs ot weak tubercles (grains) ; 

 fourth with a pair of much stronger subraedian tubercles and 

 some weaker ones at the side ; fifth with a transverse row of 

 tnbercles, of which two are larger but more wide apart than 

 those of the fourth ; sixth with a row of weak tubercles some 

 distance in front of the posterior border of the scute, with a 

 shallow transverse groove running just behind them. First 

 and second free abdominal tergal plates also with a weak 

 groove and weak row o£ tubercles, third more coarsely and 

 numerously tubercular. Sterna grooved and tuberculated. 



Palp. Trochanter with 1 long and 1 short spine below; 

 femur with 6 spines below, the fourth and sixth the shortest, 

 third the longest; 6 + 2 spines above and 3 on the inner side; 

 tubercular externally ; patella with 2 long internal spines ; 

 tibia with 4 internal and 5 external, whereof the first and 

 third are small and subtubercular, this segment also with scat- 

 tered tubercles ; tarsus with 3 pairs of very long spines, also 

 1 small proximal spine on outer side and 1 small distal tubercle 

 on each side. 



Legs as in 8. prehensor ; the lateral branches of the claws 

 of third and fourth legs almost twice as long as the median 

 branch. (PL XL fig. 3 a.) 



(J . — Like the female, but with dorsal area flatter, less 

 convex longitudinally. 



Palpi longer and stouter, with the spines shorter, except 

 one on the inner surface of the femur, which is very long, 

 crossing its fellow of the opposite side in front of the man- 

 dibles, when the two palpi are approximated. 



Measurements in millimetres. — $ . Total length 6; palp 5 ; 

 first Itg, 1 , second 12, third 11, fourth 8 (approx.). 



Loc. New Zealand : Q,\in&ic\\\\Yc\\ (^Arthur Dendy). 



This new species and S. prehensor (the only other species 

 of this genus that has been discovered) may be compared as 

 follows : — 



a. Carapace ■with two small tubercles near tlie middle of 



its anterior border and three spines on each side ; 

 spine on ocular tubercle low, not higher than long ; 

 dorsal tubercles coarser prehensor, Poc. 



b. Cai-apace -without anterior submedian tubercles and 



■with only a single long spine on each side ; ocular 

 epine higher than its basal length ; dorsal tubercles 

 weaker bicoriiis, sp. n. 



"With regard to the claws of the third and fourth legs of 

 the Triaenonychidae, it may be observed that the suppression 



