In 1927 and 1928 Hiraishi published some observations which he had made on Ascariasis in swine in the absence of Vitamin A. He claimed that he had been successful in overcoming the resistance of the pigs to the human strain of Ascaris lumbricoides by lowering the vitamin A content of the diet and that he was able to produce much heavier infestations with Ascaris lumbricoides of swine origion in A-avitaminosed pigs. As all other factors were apparently controlled, he draws the conclusion that vitamin A has a direct bearing on the susceptibility of the pig to infestation with round worms. Unfortunately these publications are not readily available in England and only summaries of results have been available to the present writer. But from the data given and in comparison with the effect of the vitamins on Ascaridia (Ackert et alia, 1929 and 1931 a & b) and on hookworm (Foster & Cort, 1931 and 1932), these conclusions would seem to be justified.

Venkatarayan (1932) gave a short account of the occurrence of galls on Andropogon pertusus Willd., a common pasture grass of South India. He described the appearance of the galls, their distribution on the plant, the symptoms to which they give rise and established the fact that the nematode causing them is a species of Tylenchus to which, however, he did not give a specific name. He pointed out that there were no earlier records of the occurrence in India of galls on grass or cereals due to nematodes apart from those caused by Anguillulina tritici in the ears of wheat.

1. The occurrence of Syngamus nasicola Linstow, 1899, in sheep, cattle and goats in the West Indies is recorded.

2. The species is re-described, on the basis of West Indian material and cotypes from deer and goat.

3. The species is contrasted with S. laryngeus Railliet, 1899, with which it has affinities and has hitherto been thought to be identical.

4. Special emphasis is laid on the use of the internal structure of the buccal capsule in differentiating the two species.

5. Syngamus kingi is compared with S. nasicola and it is concluded that the two species are identical, in which case S. kingi becomes a synonym of S. nasicola.