124 



externally, flattened and obscurely denticulate internally, slightly angular at some distance from 

 its upper part, where it joins the body-whorl. 



Alt. 54, lat. 38; apert. alt. (with canal) 37, lat. 14 Mill. 



This species has a superficial resemblance with the Mediterranean M. echinophora L. 

 but differs in every particular, the canal is much less recurved, the columellar plate is fixed to 

 the body-whorl, not loosened like \\\ echinophora^ the labial rib is much stronger, the sculpture 

 more delicate, the shape more pyriform, etc. 



2. Morio lineata n. sp. PL X, fig. 5- 



Stat. 173. 3°27'S., i3l°o'5 E. 567 M. Ceram Sea. Fine, yellow grey mud. 2 Spec. 



Shell globosely-ovate, ventricose, with a rather high spire, thin; under a yellowish epidermis 

 it is white with light brown lirae. Whorls about 8, of which 4^3 form the smooth, yellow nucleus ; 

 the other whorls very convex, with a conspicuous suture and rather strong spiral lirae, about 

 16 principal ones on the last whorl and small intermediate ones, which are of a still lighter 

 colour, moreover 5 lirae on the canal; after a few thinner lirae below the suture, 9 of the 

 principal lirae are more or less granulose on the dorsal part of the whorl; the shell is crossed 

 by numerous, rather conspicuous, lamellose or riblike striae, which run over the lirae, and very 

 fine growth-striae. Aperture oblong-ovate, angular above, ending below in a short, broad, only 

 slightly recurved canal; columellar margin with a very thin layer of enamel on the bodywhorl, 

 slightly stronger below, on the nearly straight columella, which is slightly oblique near the 

 canal, . leaving a very small umbilical slit, nearly closed by the layer of enamel ; outer margin 

 regularly curved, exteriorly with a conspicuous rib, which is flattened and rather strongly 

 denticulate interiorly. Interior of aperture with grooves, corresponding to the external lirae, the 

 o-rooves lieht brown. 



Ah. 41 Ya, lat. 29Y0; apert. alt. (inch canal) 28, lat. I2Y„ Mill. ' 



This species is allied to the preceding one, but the shell is smaller, thinner, more 

 ventricose, the granules on the brown lirae are weaker and not divided by spiral striae, the 

 canal is shorter, less recurved, the ventral side and columella nearly without enamel. 



3. Morio Alcocki Smith. PL X, fig. 6. 



Smith. Ann. Mag. Nat. Hist. Ser. 7, Vol. 18, 1906, p. 170. 



Stat. 314. 7°36'S., 117° 30'. 8 E. Flores Sea. 694 M. Fine, sandy mud. i Spec. 



The specimen has a length of 104 Mill., its diam. maj. is 68 Mill, and is consequently 

 still a little larger than Smith's type, which is 99 X 61 Mill. The species has been or will be 

 figured in Alcock's Illustrations ZooL "Investigator". As this work, of which I owe the parts 

 appeared untill December 1906, to the liberality of its author, is not generally known, I have 

 thought it useful to give figures of the magnificent "Siboga" specimen. 



16 



