114 Curaacea: 11. Diastylidae, 3. Diastylopsis, 4. Adiastylis 



longer than the exopod and- has 4, 3, 3 spines on its 3 joints respectively; 

 colour yellowish white. L. Q about 5 mm. 



New Zealand, Bay of Plenty. 



8. D. dentifrons (Zimmer) 190^ Leptostylis d., Zimmer in: Zool. Jahrb., Syst. 

 V, 18vi p. 688 tf. Z. AA. BB. | 1908 Diastylopsis d., Zimmer in: Ergeb. Tiefsee-Exp., v. 8' 

 p. 158, 190 t. 46 f. 109— 120 j 1909 D. d., Zimmer in: Ergeb. Schwed. Siidp.-Exp., v.t> 

 nr. 3 p. 26. 



Very near to D. anmdata (nr. 5) but here the distal section of the 

 telson carries 9 pairs of lateral spines and a strong apical pair, and the 

 telson itself is scarcely longer than the peduncle of the uropods, of which 

 the rami are onlv Vs*^^ ^^ long as the peduncle but subequal one to the other^ 

 the 1st joint of the endopod not so long as the 2"'^ and 3^ combined, the 

 spines of the 3 joints being respectively 1, 3, 2. Colour yellowish white, 

 L. reaching 11 mm. 



Rhodes Bay, Kerguelen, 19 m. 



D. insularum (Calm.) 1908 Leptostylis (?) i.. Caiman in: Ann. nat. Hist., ser. a 

 v.l p. 234 tf. 1— 5 a | 1911 Diastylis l, Caiman in: Tr. zool. Soc. London, r. IBiv 

 p. 342, 385. 



Agrees closely with D. nenzealanica (nr. 1) in form and armature of telson and 

 uropods, in having the 3d joint of the Hd maxilliped wider than the 4tli, and the 

 3d and 4tli peraeopods of the ? provided with minute 2-jointed exopods. but is 

 distinguished by the carapace, which has the pseudorostral Iqbes horizontal, acute^ 

 much more produced in 9 than in (5, eyelobe a little broader than long, inflated, but 

 without pigDient, frontal lobe crossed by 2 low, rounded, creseentic ridges, with a shallow 

 depression at the end of each of its bounding sutures; a longitudinal depression between 

 the branchial regions, a slight elevation of the dorsal hind margin, the whole surface 

 spinulate and an oblique forward running line of spinules on each antero-lateral surface. 

 Antenna 1 of (5 with 3d joint much shorter than 1st or 2nd, instead of subequal, as- 

 in ?, to each. Peraeopod 1 has the 6tli joint a little longer than either of the subequal 

 5th and 7th joints. L. between 9 and 10 mm. Seems to be a variety of D. neozealanica. 

 New Zealand, Bay of Islands; Lyttleton Harbour, 2— 9 m. 



D. sp. (Calm.) 1908 Leptostylis sp., Caiman in: Ann. nat. Hist., ser. 8 v.l p. 239. 

 Agrees closely with D. thileniusi (nr. 7), but has carapace and pedigerous segments- 

 together not longer than the pleon, 3d pedigerous segment not strongly produced backwards 

 at the sides, so that the interval is slight between peraeopod 2 and 3, and the telson 

 is armed with only 3 pairs of lateral spines. L. largest S 3-3 mm. Probably young 

 stage of D. thileniusi. 



New Zealand, Bay of Islands. 



4. Gen. Adiastylis T. Stebbing 



1912 Adiastylis, T. Stebbing in: Ann. S. Afr. Mus., v. 10 v ]). 146, 148. 



Telson cylindric, with lateral spines on the short, narrowed distal 

 section. Eye wanting. Maxilliped 1 with branchial leaflets not very numerous. 

 Maxilliped* 3, 2"'^ joint distally widened, the following joints not widened. 

 First peraeopod elongate. 



4 species. 



Synopsis of species: 

 j Peduncle of uropods longer than the telson — 2. 

 \ Peduncle of uropods shorter than the telson — 3. 



