ON THE ANGUILLULID X. 107 
marked off by a constriction from the rest of the body. Integument with longitudinal 
strie 10000 apart. 
Spear qoo long. Œsophagus about th of total length; anterior half narrow, posterior 
much wider. Intestinal cells not having tessellated arrangement, but well filled with 
rather small fat-particles. Anus 55y" from posterior extremity. Vulva slightly posterior 
to middle of body. 
Male not seen. 
Hab. Amidst rich mould and decaying leaves, from a damp and shady wood, Falmouth. 
4, D. TENUICAUDATUS, n. sp. (Plate IX. figs. 43, 44.) 
Female. Length 4j", breadth 415". 
External Characters.— Body tapering very gradually anteriorly, but rapidly behind anal 
cleft, where it terminates in a long filiform extremity. Head truncate, furnished with 
two small papille. Integument with longitudinal markings. 
Spear zes long. Œsophagus about ith of total length, posterior half enlarged. Intes- 
tinal cells well marked. Anus 555 from posterior extremity. Vulva slightly posterior 
to the middle of body. 
Male not seen. 
Hab. Fine sandy mud from pond, Tunbridge Wells. 
9. D. mrırıcı, n. sp. (Plate X. figs. 45-47.) 
Female. Length 45", breadth 41". 
External Characters.—Body white, tapering very slightly anteriorly, and not at all 
posteriorly, where it is blunt and rounded. Head bluntly rounded, marked off by a con- 
striction; no papille. Integumental markings not apparent. 
Spear 333' long. (Esophagus rather less than lrd of total length, posterior half en- 
larged. Intestinal cells having a tessellated arrangement, and containing light-coloured 
fat-particles. Anus x45" from posterior extremity. Vulva slightly posterior to middle 
of body; segments of uterus very short, extending only about 137’ on either side of 
vagina. | 
Male. Length 45", breadth 415". 
Esophagus much shorter than in female. Anus zo from posterior extremity. 
Spieules 66e, long. Suckers 9, mid-ventral, the first being 459 above anus, and the 
others being equidistant and 3455 apart. 
Hab. About the roots of wheat growing in a sandy soil, and also between the lower 
sheaths of its leaves: Broadmoor, Berks. 
6. D. FILIFORMIS, n. sp. (Plate X. figs. 48, 49.) 
Female. Length 44", breadth shy: 
External Characters.—Body very long and slender, tapering only slightly anteriorly, 
but considerably posteriorly, where it terminates in a fine point. Head truncate; no 
papillae, Integumental markings not visible. 
` Spear 53," long. Œsophagus ith of total length, posterior third enlarged. Intes- : 
P2 
