102 MR. H. CHARLTON BASTIAN’S MONOGRAPH 
vergence of the bright lines representing the lumen. Intestinal cells Well marked 
Anus riy from posterior extremity. Vulva at middle of body. 
Male, not seen. 
Hab. Small freshwater pool, in boggy ground, amidst decaying moss and liverwort, 
Falmouth. 
4. M. TUNBRIDGENSIS, n. sp. (Plate IX. figs. 31, 32.) 
Female, length 4”, breadth 41,". 
External Characters—Body scarcely tapering at all anteriorly, except quite at the 
extremity, opposite the pharyngeal cavity, where it becomes suddenly diminished in size: 
posteriorly it narrows rather abruptly behind anus, and then terminates in a curved 
filiform extremity. Head small, rounded; no papille. Integument having longitudinal 
striæ 73150 apart. 
Pharyngeal cavity elongated, somewhat narrowed in the middle, 1755 long. (Ey. 
phagus 5th of total length, uniform in size. Intestinal cells containing yellowish-coloured 
granules, and having a tessellated arrangement. Anus 535 from posterior extremity, 
Vulva slightly posterior to middle of body. 
. Male, not seen. 
. Hab. In fine sedimentary sand of small pond, Tunbridge Wells !. 
5. M. CRISTATUS, n. sp. (PlateIX. figs. 33, 34.) 
Female (immature), length 45", breadth iis 
External Characters.—Body tapering very slightly anteriorly, but more considerably 
posterior to the anus, where it gradually narrows to a point, and is provided on the 
dorsal surface with an integumental prolongation or erista, whose greatest breadth is 
1665 . Head truncate, provided with a minute papilla above and below. Integu 
mental striæ invisible. 
c Pharyngeal cavity large, oval, with one hook-like projection. (Esophagus between 
srd and 4th of total length, uniform in size. Intestinal cells not distinctly tessellated, 
containing small pale granules. Anus 13s from posterior extremity. Vulva consider 
ably posterior to the middle of body. 
- Male, not seen. 
Hab. In moss, Falmouth. 
6. M. rovearvm. 
Oncholaimus fovearum, Dujard. Hist. Nat. des Helminthes, p. 236. 
“ Corps trente à trente-trois fois aussi long que large; tête un peu anguleuse; cavité 
buccale oblongue, armée de deux ou trois pièces étroites, portant chacune (?) une forte 
dent en avant du milieu ; œsophage long de Omm-g | 
“ Femelle longue de 2um-5, large de 0™™-075, à queue amincie, assez longue, CON- 
Servant une méme longueur de 0™™-0]] dans sa dernière moitié, et terminée par um 
* 
1 * * 
i cin sips was very dant selected ; and as it was the first example of one of nie 
! Meg ; at was carefully sübmitted to examination by me, in May 1863, I have retained the name of the platt 
where it was found as a specifie appellation, 
abundant in the specimen of mud 
