CYLICHNA. 293 



Brown, but Brown's Bulla striata is preoccupied by Bulla striata 

 Bruguiere. 



It may be that C. occulta is distinct from scalpta, as Leche claims, 

 and Krause agrees ; but my material is not sufficient to show the 

 distinction. 



C. RICHARDI Dautzenberg. PI. 29, figs. 4, 5, 6, 7. 



Shell If mill, high, 3 mill, wide ; rather solid, convoluted, ovate- 

 cylindrical, the apex mamillated. Last whorl sculptured with 

 spaced series of little, round impressed pits. Aperture narrow above, 

 dilated and rounded below, as long as the shell. Columella straight, 

 thickened ; lip acute, subarcuate ; color dull white. (Dawte.). 



Pico, Azores, 1287 meters. 



Oylichna richardi DAUTZ., Res. Camp. Sci. Albert I, i, p. 23, pi. 

 1, f. 7. 



C. PARVULA Jeffreys. PL 59, figs. 4, 5. 



Shell forming a short cylinder, rather solid for its minute size, 

 semitransparent, and glossy: sculpture, numerous and very fine 

 wavy lines of growth ; the crown or apex is encircled by a thickened 

 riblet or ridge ; half-grown, and especially young specimens ex- 

 hibit a sunken spire of one or two whorls with a globular nucleus ; 

 colour clear white ; mouth contracted above and in the middle, wide 

 and rounded below ; outer lip curved at each end, slightly project- 

 ing beyond the crown ; apex perforated ; pillar short, flexuous, 

 notched at the base. Length 0'06, breadth 0'03 inch. (Jeffr.'). 



Off Crete, 70-120 fms. (Spratt). 



Cylichna pqrvula JEFFR., Ann. Mag. N. H. (5), xi, 1883, p. 400,, 

 pi. 16, f. 9. Cryptaxis parvula MONTS., Nona. Gen. e Spee., p. 144,. 



This is perhaps the type of a distinct genus between Cylichna and 

 Utricuhis, which may be called Cryptaxis, because the spire is partly- 

 concealed. A little Madeiran shell, discovered by the Rev. Robert 

 Boog Watson, and named by him Utriculus tornatus or U. spretus, 

 somewhat resembles the present species, but is much larger and 

 oval ; and the spire is more visible, although sunken and partly con- 

 cealed. (Jeffr.}. 



C. CREBRIPUNCTATA Jeffreys. PL 27, figs. 2, 3, 4. 



Shell oval, thin, semitransparent and glossy; sculpture, very 

 numerous and regular fine spiral or revolving stria?, which are 

 20 



