124 mOCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



II. Fam. Neomenitd^. 



Body uniformly elon2;ated, without constrictions. A ventral furrow 

 present. No true gill -plumes. Respiratory organs, when present, 

 in the form of simple protuberant folds of the wall of the rectum, 

 lladula present or absent. 



Habits. — Creep on the surface of mud, or on water-plants 

 {Posidonia ?) ; or live in a semi-parasitic manner on corals and 

 Hydroid Zoophytes. 



1. Neomenia, Tullberg, 1875. 



Body 2-3 cm. long. Cloaca subterminal, continuous with the 

 ventral furrow. A pedal ridge in the furrow. Spicules needle- or 

 lancet-shaped, projecting far out of the cuticle. Ectodermal papillae 

 short, with broad stalks. No radula. 



1. Neomenia carinata, Tullberg, 1875. Back keeled. 

 Distribution. — Shetland (A. M. Norman) : Upper Loch Etive, 



50-70 fathoms (Dr. J. Murray). [North Atlantic, west coast of 

 Scandinavia.] 



2. Neomenia Dalyelli, Kor. and Dan., 1877. ? Vermiculus crassus, 

 Dalyell, 1 853. Back not keeled. A large spicule on each side of cloaca. 



Bistribution. — Scotland ? (Dalyell). [Norway.] 



2. EnoPALOMENiA, Simrotli, 1892-4. 



Body worm-like, pointed in front and behind. Cloacal opening 

 a long ventral slit, with which the ventral furrow is continuous. 

 Pedal ridge present. Cuticle crowded with needle-like deciduous 

 spicules, pointed at both ends. Ectodermal papillce club-shaped, with 

 slender stalks, reaching almost to the surface of the cuticle. Eadula 

 polystichous or absent. Length 6-60 mm. 



3. Rhopalomenia aglaophenice, Kow. and Mar., 1 887. Body elongated, 

 up to 32 mm. in length, somewhat attenuated posteriorly. Radula 

 absent. 



Bistribution. — Plymouth. (Two specimens, coiled round stems of 

 Aglaophenia myriophjllum^ dredged in 25-30 fathoms, April, 1896. 

 W. G.) [Banyuls, Marseille.] 



3. Myzomenia, Simroth, 1892-4. 



Body elongated, worm-like, cylindrical. Anterior end thickened to 

 form a knob-like head. Cloacal opening ventral. A short finger-like 

 tail behind the cloaca. Ventral furrow smoothed out, forming a 

 longitudinal streak. Spicules shield-shaped or leaf-like, imbricating. 

 No respiratory folds of rectum. No radula. 



4. ITyzomenia Banyulensis, Pruvot, 1890. Length 30 mm. Colour 

 bright crimson. 



Habitat. — Coiled ronnd the stems and branches of the Hydroid 

 Lafoea dnmosa. 



'Bistribution. — Plymouth. (April, 1895. Half-a-dozen specimens. 

 E. J. Allen, W. G.) [Banyuls, Roscolf.] 



