42 Annals of the Soiith African Museum. 



than twice as broad as the pentagonal fifth. The short rami 

 of the latter are fringed each with four setae, and a spicule on 

 either side of the setae. The second antennae are similar in 

 character to those of the female, but less elongate and without 

 reverted teeth. The mouth-organs showed near agreement with 

 those of the female, with the maxillipeds stronger. 



The specimens measured varied betweed 5 - 5 and 6 - 5 mm. in 

 length for the females, with egg-strings about three times as 

 long ; the male was a little over 3 mm. in length. 



Locality. Algoa Bay. The parasites were obtained by Dr. 

 Gilchrist from the tail of a shark. 



FAMILY LERNAEIDAE. 



(See General Catalogue of S.A. Crustacea, p. 560.) 

 GEN. LERNEAENICUS, Lesueur. 



1824. Lerneaenicus, Lesueur, Journ. Ac. Philad., vol. 3. 



1861. Lernaeenicus, Steenstrup and Liitken, K. Danske Vid. Selsk. 



Skr., ser. 5, vol. 5, pp. 398, 400. 



1861. Lerneaenicus, Steenstrup and Liitken, loc. cit., pp. 401, 432. 

 1899. Lernaeenicus, Bassett- Smith, Pr. Zool. Soc. London, p. 484. 

 1908. Wilson, Proc. U.S. Mus., vol. 35, p. 458. 



It is obvious that Steenstrup and Liitken, from whom I 

 borrow the reference to Lesueur, must be giving the original 

 spelling of the generic name in their list of corrigenda on p. 432. 

 They there note an additional erratum on p. 347, where Ler- 

 naeonicus is printed instead of Lerneaenicus. 



LERNEAENICUS MEDUSAEUS ?, Wilson. 



1908. Lernaeenicus vnedusaeus ?, Wilson, Proc. U.S. Mus., vol. 35, 



p. 458, pi. 76, figs. 99, 100. 



On a small fish, which Dr. Gilchrist informed me he had 

 named Scopelus argenteus, there occurred a parasite displaying 

 a genital segment and neck, together 6*5 mm. long, with egg- 

 strings not quite double that length. The very short neck, 

 sharply bent, left the remainder of the animal immersed 

 between the gills of the fish, but so firmly embedded in its 

 tissues that very patient endeavours produced no intelligible 

 result, except such as might well correspond with that described 



