Diagnosis. Female 0.4 mm ; a = 18; b = 3.3; y
= 12.5; V = 68
Lips completely amalgamated, rounded. Corpus of esophagus at
first half as wide as neck, tapering in basal fourth to an obscure junction
with the isthmus. Nerve ring at base of corpus. Excretory pore
opposite nerve ring. Tail uniformly conoid to truncate terminus.
Habitat- Pineapple field, Oahu, Hawaiian islands. Grown on agar
plate by Miss Juliette Oliveira.
Cephalobus parvus is distinctive because of its small size and
form of lips and tail.
(Description- Thorne, 1937)