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PACIFIC SCIENCE, Vol. XXI, April 1967 
40 X 60 p-44 X 72 [i, with thick walls and 
radial muscle fibres strengthening it; the mean 
diagonals of the oral pouches are about 50% of 
the diagonal of the pharynx. The narrow 
oesophagus is 0.12-0.18 mm long and bifur- 
cates into the intestinal crura just behind the 
male terminalia. These crura lack both intercrural 
branches and bridges, and have very few outer 
branches; they terminate posteriorly at different 
levels in the posterior third of the hindbody, 
where their ends are slightly inflated. The crus 
on the inhibited side of the haptor is the longer, 
reaching to opposite the fifth clamp or so from 
the posterior end of the longer row, well in 
front of the two clamps of its own side. 
The intestinal crus on the side of the body 
Figs. 12-17. Engrauliphila grex gen. et sp. nov. 12, Complete worm, ventral view; 13, clamp, ventral 
view; 14, anchors; 13, hind end of haptor with the anchored lappet; 16a and 16b, male genital pore with 
the armed penis; 17, ootype and ovarian region, ventral view. 
