BY T. H. JOHNSTON AND MAVIS .1. WALKER. 68 



(4) Loxosoma sp., found by Goddard (1909, p. 725), 

 on a marine leech, Pontobdella australiensis Godd. No 

 locality is mentioned, but presumably it was collected in 

 New South Wales. 



(5) Loxosoma sp. Macdonald (1876, p. 211) drew 

 attention to and figured certain structures associated with 

 two species of marine leeches {Pontobdella and a gill-bearing 

 form) from Shark Bay, West Australia. He regarded them 

 as spermatophores and noted that those found on the 

 Pontobdella were different to those occurring on the other 

 leech. Goddard (1909) referred to Macdonald's discovery 

 and showed that the structures seen by him were really 

 two different species of an endoproct polyzoon, probably 

 Loxosoma, infesting Pontobdella australiensis and 

 Branchellion sp. respectively, the former belonging to 

 the same species (No. 4) as that examined by Goddard. 



LITERATURE. 

 1886. Busk — Report on th<> Polyzoa. Part 2. Challenger Reports, 

 17 (1), 1886. 



1909 (tODD.4RD — Contributions to our Knowledge of Australian 

 Hirudinea, Part 4, with a note on a parasitic endoproctous 

 Polyzoon. P.L.8., N.S.W., 34, 1909 (1910), pp. 721-732. 



1915 Hedley — -An ecological sketch of the Sydnej' Beaches. P.R.S., 

 N.S.W., 49, 1915, pp. 15-77. 



1884 HiNCKS — Contributions to a general liistory of the Polyzoa, xiii., 



Ann. Mag. Nat. Hist. (5), 13, 1884, pp. 363-5. 

 1876 .AIacDokald — On a new genus of Trematoda and some new or 



little-known parasitic Hirudinei. Tr. Linn. Soc, sei'. 2, 2, 



1876 (1877), ijp. 209-212. 

 1889 Whitelegge — List of the marine ami freshwater invertebrate 



fauna of Port Jackson and the neighbourhood. P.R.S. 



N.S.W., 23, 1889, pp. 163-327. 



