Contributions to the Crustacean Fauna of South Africa. 433 

 FAMILY JAEEIDAE. 



1910. Jacridae, Stabbing, J. Liun. Soc. Lond. Zool. vol. 31, 



No. 207, p. 224. (References.) 



GEN. JAEEA, Leacb. 



1814. Jaera, Leacb, (?Tr. Linn. Soc. vol. 11, p. 373), Edinb. Encycl. 



vol. 7, p. 434. 



1825. ,, Desmarest, Consid. Gen. Crust, p. 316. 

 1840. M. Edwards, Hist. Nat, Crust, vol. 3, p. 147. 



1840. Jae.rnUna, id. ibid. p. 150. 



1887. Jaera, Pfeffer, Jahresber. Hamb. wiss. Anst. vol. 5, p. 134. 

 1893. Stebbing, Hist. Crust, p. 379. 

 1897. laera, J. O. Sars, Crust. Norw. vol. 2, p. 103. 

 1905. Jaera, Richardson, Bull. U.S. Nat. Mus. No. 54, p. 449. 

 1905. Tattersall, Fish. Ireland Sci. Invest. 1904, No. 2, p. 51. 



JAEEA SEERATA, n. sp. 

 (Plate XXXVIII. A.) 



Body glabrous except for a few scattered setae on the sides. 

 Head without rostrum, anterior margin nearly straight, antero- 

 lateral angles acutely produced, lateral margins with six teeth and 

 scattered setae, eyes oval, black. 



Peraeon segments subequal, antero-lateral angles of first segment 

 each with a stout spine, no marked gap between the anterior four 

 segments and the posterior three. 



Pleon nearly equal to last three peraeon segments, longer than 

 broad, oval, lateral margins with scattered setae and towards apex 

 with six teeth, notches for uropods well marked, leaving a median 

 point. 



First antenna reaching to end of 5th peduncular joint of second 

 antenna, 1st joint very stout, 2nd and 3rd slender, not distinguished 

 from the 3-jointed flagellum. 



Second antenna about twice length of head, 3rd joint with a dis- 

 tinct scale bearing 2 setules, 5th and 6th joints subequal, flagellum 

 as long as peduncle, 15-jointed. 



Upper lip as in /. marina. 



Mandibles as in /. marina, the molar very prominent, the joints of 

 the palp slightly increasing in length from the first. 



Maxillipeds, 4th and 5th joints larger than 3rd or 6th joints, but 



