. Discovery reports. Discovery (Ship); Scientific expeditions. NEMATODA 547 Contracaecum spiculigerum (Rud., 1809) A large number of specimens of this extremely common and cosmopolitan species were collected from the stomach of a cormorant (P/ialacrocorax magellaniciis) at St Martin's Cove, Hermite Island, Cape Horn (Station 222). Contracaecum clavatum (Rud., 1809) Adult or immature specimens which are referred to this species were collected on about six occasions from the stomach or intestine of Merliiccius sp. at various places off the Falkland Islands (Stations WS 73, 90, 96, 99). These wor
. Discovery reports. Discovery (Ship); Scientific expeditions. NEMATODA 547 Contracaecum spiculigerum (Rud., 1809) A large number of specimens of this extremely common and cosmopolitan species were collected from the stomach of a cormorant (P/ialacrocorax magellaniciis) at St Martin's Cove, Hermite Island, Cape Horn (Station 222). Contracaecum clavatum (Rud., 1809) Adult or immature specimens which are referred to this species were collected on about six occasions from the stomach or intestine of Merliiccius sp. at various places off the Falkland Islands (Stations WS 73, 90, 96, 99). These worms are rather small, as compared with specimens of C. clavatum from hake and cod in northern latitudes, and the males have shorter spicules, but a specific distinction does not seem justifiable. A single small male, apparently of the same species, occurred in the intestine of Stromateus sp. at Station WS 78, and an immature specimen in the stomach of Gadus sp. at Station WS 99 (both off the Falklands). Contracaecum rectangulum (v. Linstow, 1907) A number of specimens of this species, of various ages, occurred among the stomach contents (chiefly Cephalopod remains) of a sea-leopard {Hydrurga leptonyx) in the South Sandwich region, January 22, 1928. Immature forms, probably also of this species, were collected from the intestine of another sea-leopard at Station 184, March 15, 1927, and from the stomach of a crab- eater seal (Lobodon carcinophagiis) at Station 187, March 18, 1927. Both these stations were in the Palmer Archipelago. Contracaecum zenis, sp. n. (Fig. 4) Four adult females from Zeus capensis off South-west Africa, July 8,1927. The worms are stated to have been found in the body-cavity, but had probably escaped from the alimentary canal. The length of the specimens varies between 55 and 70 mm., and the maximum thickness reaches 1-5 mm. The cuticular striations are fine (about 0-005 mm. apart). The dorsal lip has wide cuticular expansions laterally, and the anterior lo
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