188 Transactions. 



sternite (fig. 6) with only slightly convex sides, converging caudad, angles 

 broadly rounded, caudal margin gently emarginate. Coxopleurae with 

 rounded caudal margin, pores large and small, about 50 in number, 

 including a row of small pores partly concealed by the anal sternite, a 

 broad pore-free margin bearing about a dozen setae. Femur of penult legs 

 spinescent above and laterally, below with many short fine hairs, but not 

 so finely pubescent as in the last species ; 1-9 times as long as broad. 

 Anal legs : femur 1-9 times as long as broad, covered with many spinescent 

 setae, prefemur 2-0 times as long as broad, with less stout setae than 

 the femur, tibia 1-8 times as long as bread ; dental formula 1+13 + 7 

 (1 +11 +7 in paratype), no special raised keel for the teeth on the tibia, 

 a moderate keel bearing the teeth ol the first tarsal joint, but not extending 

 beyond the dentate area, as in C. ignivia n. sp. 



Length, 27 mm. 



Loc— Mount Algidus (T. Hall). 



Cryptops akaroa n. sp. (Figs. 7 to 9.) 



Colour dull yellowish-brown, head orange. Head without sulci, over- 

 lapped by the 1st tergite. Tergal sulci complete from the 4th segment, 

 extending two-thirds along the 20th. Anal tergite with straight sides, 

 slightly converging caudad, caudal portion triangular with blunt median 

 angle. Presternum with chitinized gently convex anterior margins, medianly 

 slightly emarginate, bearing a few submarginal hairs. Sternites with trans- 

 verse arm of cruciform sulci visible from 2nd, longitudinal arm visible from 

 4th to 19th segment ; transverse arm recurved and more distinct than 

 longitudinal, which extends from the transverse arm half-way to the anterior 

 and posterior margins of the sternites. Anal sternite (fig. 7) with distinctly 

 convex sides converging caudad, and merging by broadly rounded angles 

 to the slightly convex caudal margin. Coxopleurae with 40 large and 

 small pores, a wide pore-free margin with about 10 setae caudad. Femur 

 of penult logs (fig. 8) 1-7 times as long as broad, with a few long sharp 

 setae above and at the sides, and with numerous shorter more slender 

 hairs below. Anal legs (fig. 9) very stout, femur ] -6 times as long as wide, 

 covered with numerous stout spinescent setae, prefemur 1-75 times as 

 long as wide, with longer setae than the femur, tibia 1-8 times as long as 

 wide ; dental formula 2 + 11 -1-7. 



Length, 25 mm. 



Loc. — Akaroa (G. A.). 



This species differs from the last in its stouter penultimate and anal 

 legs, the form of the anal sternite, and the fewer coxopleural pores. 



Cryptops ignivia n. sp. (Fig. 10.) 



Colour light yellowish-brown, head darker. Head overlapped by 1st 

 tergite. Tergal sulci faint but nearly complete on 5th, complete from 6th 

 nearly to caudal margin of 20th. Last tergite with sides slightly con- 

 verging, triangular process with median angle rounded. Presternum with 

 anterior margins chitinized, almost straight, with a very slight edentation 

 at their junction ; one or two very small submarginal hairs. Sternal 

 sulci not deeply impressed, transverse recurved and more distinct than 

 longitudinal , which reaches only half-way to front and hind margins 

 of the sternites. Anal sternite with slightly convex, posteriorly converging 

 lateral margins ; angles rounded, caudal margin with the slightest trace 

 of a median emargination. Coxopleurae truncated and setose caudally ; 



