236 Annuls <>f the South African Museum. 



FAMILY AORIDAE. 



1899. Aoridae Stebbing, Ann. Mag. Nat. Hist. ser. 7, vol. 4, p. 211. 

 1906. id. Das Tierreich, 21, pp. 585, 736. 



1909. Chevreux, Bull, de 1'Inst. oc. Monaco, no. 150, p. 5. 



1910. Stebbing, Sci. Ees. "Thetis," pt. 12, p. 605. 

 1912. Pearse, Proc. U.S. Nat, Mus. vol. 43, p. 372. 



GEN. AOEA Kroyer. 



1845. Aora Kroyer, Naturli. Tidsskr. ser. 2, vol. 1, p. 328. 



1888. Stebbiug, Challeng. Rep. vol. 29, p. 1072 (Synonymy). 



1906. id. I.e. p. 587. 



1910, id. Gen. Cat. S.A. Crust, p. 459. 



AORA TYPICA Kroyer. 



1845. Aora typica Kroyer, I.e. p. 328, pi. 3, figs. 3a-l. 



1906. Stebbing, I.e. p. 587, fig. 101 (Synonymy). 



1907. Chevreux, Mem. Soc. Zool. Fr. vol. 20, p. 510. 



1908. Stebbing, S.A. Crust, pt. 4, p. 84. 



1909. Chilton, Subantarct. Is. N. Zeal. vol. 2, p. 645. 



1910. Chevreux, Mtm. Soc. Zool. Fr. vol. 23, p. 242. 



1911. Chilton, Tr. N.Z. Inst. vol. 43 [1910], p. 565. 



The $ and $ specimens from South Africa referred to by Stebbiug 

 (I.e. 1908, p. 84) are very near to the form described by Stebbing in 

 1888 as A. kergueleni. The 1st gnathopod in <$ has no setae on 2nd 

 joint, nor tooth on anterior margin, 4th joint projects beyond end of 

 5th, inferior margin of 5th and 6th and apex of 6th with long setae, 

 finger f length of 6th, inner margin feebly serrate. Fifth peraeopods 

 lost. Rami of 3rd uropod subequal and a little longer than peduncle. 

 Telson broader than long. 



Littoral specimens from Table Bay are similar. The spine on inner 

 apex of 6th joint of 1st guathopod of appears to be usually absent. 

 Fifth and 6th joints of 2nd guathopod of <$ rather narrower than in 

 Stebbiug's figure of A. ~kerguele.ni, nearly 3 times as long as wide. 

 Peraeopod 3 with 2nd joint tapering distally, hind margin straight 

 or slightly concave, infero-posterior angle with 1 spine ; 2nd joint of 

 4th peraeopod similar but rather more pyriform ; 2nd joint of 5th 

 peraeopod broadly oval, nearly as broad as long, hind margin convex, 

 postero-inferior angle with 1 spine. 



The peculiar feature of these specimens is the length of the rami of 

 the 3rd uropod, which are equal to or even in some cases a little shorter 



