Abstract
Stomachoglossa bryophilum n. sp., Westindicus rapax n. sp., Caribenema siddiqii n. sp. and C. longidens Thorne, 1967, are described from St. Lucia. S. bryophilum n. sp. is distinctive because of its combination of body length, tail length and odontostyle length and in having about 40 longitudinal grooves at the mid-body region. A female of this species was observed feeding on the body contents of a dead mesostigmatid mite. W. rapax n. sp. can be distinguished from W. brachycephalus by possessing eight male supplements, five pairs of caudal pores on the male tail and two to three pairs on the female tail. W. rapax is a predator and was observed feeding on the body contents of enchytraeids, a tardigrade and a Xiphinema sp. C. siddiqii n. sp. differs from C. f erox and C. longidens in having six onchia in the vestibule and six basal thickenings around the guide ring. C. siddiqii n. sp. is close to C. drepanodon n. comb. (Syn. Carcharolaimus drepanodon Loof, 1964) from which it differs in having numerous denticles in the vestibule, longer odontostyle and three pairs of caudal pores.
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