ON HELMINTHES. Se 223 
3 species previously found in the Arctic zone are now recorded 
from the Antarctic for the first time, viz. :— 
In Megaptera longimana ; 
Filaria crassicauda Creplin. 
Echinorhynchus turbinella Dies. 
In Leptonychotes weddelli : 
- Ogmogaster plicatus (Creplin). This species isa parasite 
of whales in northern seas. 
1 species recorded outside the Antarctic zone has now been 
found within the Circle, viz. :— 
In Megalestris maccormicki : 
Tetrabothrius cylindraceus Dies. 
15 species found within the Antarctic circle are new, viz. :— 
NEMATODA. 
KATHLEENA SCOTTI, sp. n., from Diomedea melanophrys. 
An Ascarid nearly related to Ascaris osculata which is 
designated type, infra, of a new genus Kathleena. 
Whitish, firm, round-worms. Male 15x0-9 mm. Female the 
same or slightly larger. Interlabia very large, pentagonal. 
Short-curved cesophageal appendage 0°2 mm. Intestinal cecum 
18 mm. (ésophagus 2°53x0-4 mm. Spicules 3x2°7 mm. 
Tail of male terminates in blunt digitate process. 
ACANTHOCEPHALA. 
ECHINORHYNCHUS CAMPBELLI, sp. n., from Zrematomus ber- 
nacchit. 
Male 9mm. Female 10 mm. Thin-walled. 2:5 mm. broad. 
Proboscis 2 mm. Hook-bearing rostellum 0°5 mm. Hooks 14 
linear series of 8 hooks each. ‘Testes oval, occupy the third 
fourth of the body. 
EcCHINORHYNCHUS RENNICKI, sp. n., from Zrematomus ber- 
nacchit. 
Male3°7mm. Female4mm. Proboscis] mm. Hook-bearin 
rostellum 0°73 mm. Hooks in 12 linear series of 6 each. Those 
of alternate rows are in line transversely. Each hook protrudes 
from a transparent cuticular lapel. Lemnisci are long and 
slender. 
ECHINORHYNCHUS DEBENHAMI, sp. n., from Zrematomus ber- 
nacchi. 
Male 2°2 mm. Female 2:2 mm. Sickle-shaped. Stout, 
cylindrical rostellum with hooks in 12 linear series of 6 each. 
Lemnisci bag-like, extending but little behind proboscis. Testes 
large, occupying anterior half of body-cavity, deeply lobed. 
Female crowded with eggs. 
