284 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



based on tlie examination of some specimens kindly given to me by 

 Mr. A. S. Kennard, to whom I am much indebted for the opportunity 

 of examining this interesting snail. The specim.ens were collected 

 by Professor T. D. A. Cockerell on the Island of Cima, a small 

 rocky islet off the south-east coast of Porto Santo, about 35 miles 

 north-east of Madeira. The species appears to be confined to this 

 little island, where it occurs in considerable numbers ; but numerous 

 other members of the same genus are found throughout the Madeira 

 Islands, although very little has been published about their anatomy. 



The Shell of the specim.ens examined measures about 9 mm. in 

 height by 6 "5 mm. in its greatest diameter. Its form will be seen from 

 PI. VI, Fig. 1 . The whorls are covered with minute oval granules, 

 the major diameter of each individual granule being parallel to the 

 lines of growth on the first two whorls, but horizontal on the 

 remaining whorls. The shell is of a brown colour, the apex and the 

 uninterrupted peristome being pale. Above the periphery the 

 whorls are crossed by ill-defined lighter and darker oblique streaks. 

 On the base of some of the specimens a broad, dark brown band 

 encircles a lighter central area, which is perforated by the very narrow 

 umbilicus. 



The Head bears the usual two pairs of tentacles, with the eyes 

 at the ends of the upper pair, and the usual labial palps. The genital 

 opening is situated on the right side of the head, below and a little 

 behind the base of the upper right tentacle, from which it is separated 

 by about "8 mm. A network of grooves divides the skin of the head 

 and neck into numerous small polygonal rugse. ' Vertical facial 

 grooves are absent ; the oblique lateral grooves on the sides of the 

 neck are somewhat irregular and poorly developed ; but the two 

 dorsal grooves are better defined, and are rather close together. 

 A pair of very broad, dark grey bands extends forwards from below 

 the mantle-edge as far as the upper tentacles ; the bands nearly meet 

 dorsally, but leave an unpigmented area beneath them on each side 

 above the edges of the foot. The front of the head is light grey. 

 Where the pigment is present it is chiefly concentrated on the tops 

 of the rugae, the grooves being paler. 



The Foot is bluntly pointed at the hinder end, which is slightly 

 flattened,' there being no keel, nor median posterior groove, nor 

 caudal mucous pore. A narrow peripodial groove runs along the 

 edge of the foot, but there is no defined foot-fringe. The sole is 

 unpigmented and is obscurely tripartite, the narrow lateral areas 

 meeting at the posterior extremity, but tapering to a point at the 



International Code that a name which only differs from another generic name 

 " in a slight variation in spelling " is " not to be rejected on this account ", even 

 if it is believed to be of the same derivation. Therefore I follow Professor 

 Cockerell in using the name Ochthephila Beck, instead of the later name 

 Oeomitra Swainson, for this genus of snails (Journ. of Conch., vol. xvi, 1922, 

 p. 310). 



