ACANTHOCEPHALA 



SS7 



Sub-family ECHINORHYNCHINAE (?) 



Echinorhynchus s.l. 



An immature specimen of "Echinorhynchus" occurred in the intestine of Para- 

 chaoiichthys georgiciuus at Stromness, Soutli Georgia, January 7, 1927. 



P- 









Fig. 13. Bolbosoma hamiltom. Anterior end 

 of female. 6., " bulb ";/>., proboscis. 



0-5 MM. 

 Fig. 14. Bolbosoma haniiltoni. Proboscis of female. 



Family RHADINORHYNCHIDAE 



Rhadinorhynchus wheeled, sp. n. 



(Fig. 15) 



This species^ occurred in the intestine (especially the rectu'm) of the following fish s : 



Notothenia rossii Stromness and Grytviken, S. Georgia, December 1926 and January 



1927 

 Parachaenichthys georgianus Stromness, January 1927 

 Trematomus ? hansoni Cumberland Bay, South Georgia 



The collector's label in one tube (from Notothenia rossii, Stromness) says "Approxi- 

 mately 300 in one fish — many in rectum and extending right up the intestine. When 

 fresh a yellow colour". 



The worms measure 3-8 mm. in length and 1-4-2 mm. in maximum thickness. The 



1 Since this report was sent to press, an account has been published by Van Cleave (Ann. Mag. Nat. 

 Hist. (10) IV, p. 229, August, 1929) of a form from " Trematomus or Notothenia" from the South Shetlands, 

 which he names Aspersentis austriniis, gen. et sp. n. This form seems to approach very closely to Rhadino- 

 rhynchus wheeleri, though in certain details the two descriptions are not in complete agreement. 



