Brackish-watcr Polyclads. 
191 
I. M. fulva. 
Genus Stylochns. 
Body oval, of a brownish black colour. Tentacular eye- 
spots arranged close together on tentacles ; cerebral eye- 
spots in two groups . . 
b^. Vagina short 
a^. Eye-spots distributed on frontal margin. 
a*. Body broadly oval, of a greenish brown colour. 
Tentacular eye-spots confined to the basal parts of 
tentacles; cerebral eye-spots in two elongate tracts .. 2. SL orientalis. 
h*. Body broadly cuneate-oval, with frilled margin, of a 
yellowish green colour, darker in the median parts. 
Tentacles large; tentacular eye-spots close together 
on tentacles ; cerebral eye-spots diffuse distributed 
II 
a'"*. Without eye-spots on frontal margin. 
Body broadly eUiptical, whitish in colour. Tentacle 
small; tentacular and cerebral clusters of eye-spots 
distinct but few in number 
b'. Tentacles absent. With one paired accessory vesicle to vagina 
a'*. Marginal eye-spots completely around body. 
Body elongate-oval, more broadly rounded anteriorly than 
posteriorly. Colour generally olive-green, sometimes 
reddish. Tentacular eye-spots in two somewhat cres- 
centic clusters ; cerebral eye-spots irregularly distributed 
b*. Marginal eye-spots confined to the anterior third of body. 
Body elongate-oval, olive brownish coloured. Tentacular 
and cerebral eye-spots blend together, both arranged in 
two irregular clusters 
B. Marginal eye-spots absent 
a^ Tentacles present or absent. Accessory vesicle of vagina small 
and rudimentary 
a'^. Tentacles present. 
Body broadly oval, of a yellowish gray or yellowish brown 
colour. Tentacular eye-spots on tentacles ; cerebral eye- 
spots in two irregular clusters 
b*. Tentacles absent. 
Body oval ; colour as in the preceding. Tentacular and 
cerebral eye-spots in two irregular but distinct groups 
on each side 
b'. Tentacles wanting. With accessory vesicle to vagina. Vagina 
and vaginal duct describing a circle and each opening exter- 
nally by a distinct aperture 
Body elongate, anteriorly rounded, posteriorly tapering to 
a point. Colour whitish. Tentacular and cerebral eye- 
spots blend together . . 
With sucking disc on ventral surface 
Marginal tentacles present 
Body oval, of a blackish brown colour, blotched with colourless 
flecks and bordered all round with a double band, the inner 
chrome-yellow and the outer black . . 
3. St. orientalis var. 
splendid a. 
4. St. hyalinus. 
Genus Shelf ordia. 
5. Sli. annand'.ilei . 
6. Sh. amara. 
Section Schematommata. 
Genus Notoplana. 
7. A^. evansi. 
8. N. mortenseui . 
Genus Copidoplan i . 
9. C. paradoxa. 
Suborder Cotylea. 
Genus Psendoccros. 
10. P. litoraUs. 
