
JOHNSTON AND MAWSON—AVIAN AND Fish NEMATODES 553 
Male, 2:8-5 mm, in length; vestibule +1 mm. long; anterior part of 
vesophagus +14 muu., posterior part +6 mm, long; exeretory pore +17 ym, behind 
head. Spicules, 50 and 100p long, Candal alae somewhat narrow for the genus, 
supporting four pairs of preoral and five pairs of postanal papillae. The ventral 
surface around the cloaca is beset with small euticular tubercles. 
Larval worms, often encysted, and of a type veferred to in a previous 
paper (J, and M. 1941, 260) under Acuaria (s.1.) sp., larvae, as having been 
recovered from two birds and from Relropinna semoni, are now recorded from 
various hosts, namely Nunnoperca australis, Pseudaphritis urvillii, and Pleetro- 
plites ambiguus. These worms are also very like certain larvae from fish from 
subantaretic waters recorded in B.A.N.Z.A.R.E. Reports (J. and M. 1945). 
Without infection experiments, it is probably impossible to tell which are the 
larvae of Ascarophis sp. or Spinttectus spp. from fish, and which of them belong to 
Acuariids living as adults in birds. Most of the known Acuariid life histories 
however involve an arthropod intermediate host, so it is probable that larvae 
found in fish will grow to the adult stage in the same host. 
STREPTOCARA RECTA (Linst). 
Streptocara recta (Linst) is again recorded from Podiceps ruficollis novae- 
hollandiae. The measurements of the single female in this collection are as 
follows: body length 5:2 mm.; length of vestibule 27; length of anterior part 
of oesophagus -25 mm., of posterior part 1-2 mm.; vulva 2mm, from posterior end 
of body; eggs 85p by 18. 
LITERATURE. 
Freitas, J, F., and Lent, H. J. (1935) : ‘*Capillaviinae de animaes de sangue frio,”’ 
Mem. Inst. Oswaldo Cruz, xxx, 241-284. 
Johnston, T. H. (1912) : ‘Notes on some Entozoa.’* Prov. Roy. Soc., Queensland, 
xxiv, 63-91. 
Johnston, T. H., and Mawson, P. M, (1940); ‘‘Some Nematodes Parasitic in 
Australian Freshwater Fish.’’ Trans. Roy. Soc., 8. Aust., lxiv, 340-952, 
Johnston, T. H., and Mawson, P, M. (1941): *'Some Nematode Parasites of 
Australian Birds.’ Proc. Linn. Soc., NSW, xvi, 250-256, 
Johnston, 'T. H., and Mawson, P. M. (1944) ; “Remarks on some Parasitic Nema- 
todes from Australia and New Zealand.”” Trans. Roy. Soe., 8, Aust., ieviti 
(1), 60-66. 
Johnston, T. H., and Mawson, P. M, (1945): ‘‘Capillariid Nematodes from South 
Australian Fish and Birds.’ Trans. Roy, Soc, 8. Auest., bxix (2), 243-248. 
Johnston, ‘I’. T., and Mawson, P. M. (1945) : ‘‘Purasitic Nematodes.’? B.A.NZ. 
Antarct. Res, Exp., B, v (2), 73-160. 
