4^4 



l";iin. S(\rii.\Ni)Rii).\i:. 

 Meloscaphander n. ^jcn. 



Shell ovate, convex in its iipner |)art, attcniiated below, with low, exsertecl spire ; aperture 

 shorter thaii the shell, larjje; columella inoderateiy curved, thick. Sculpturc consisting of spiral 

 rows of pits. Type: JM. Sibogac Schepm. 



This shell has the sculpture, biit not the shape of Scap/tamür, which is on the contrary 

 narrower above thaii bcIow and has a sunken spire. 



I. Mtlosiaphandcr Sibogac w. s|). PI. XXXi, Iil;. 3 — 9. 



Stat. 22\. 6°24'S., 124° 39' K. lianda-sea. 279S M. Solid bluish grcy nuul witli fnr.iminifcra. 

 I Spec. 



Shell ovate, broadest in its upper half, obliqucly attenuate below, rather strong, yellowish 

 under a brown epidermis. Whorls 3'/^, forming a short spire, slightly eroded, separated by a 

 deep sutiire, probably a little convex, but the characters of upper whorls are obliterated 

 by erosion ; last whorl large, strongly rounded in its upper part, more straightish in its 

 niedian part, narrower below. Sculpture consisting of spiral lirae in upper part, (about 16 in 

 number), which are often doublé and are crossed by riblets, giving a cancellated appearance 

 to that upper part ; lower on the lirac disappear and have the character of a smooth 

 surface, with about 60 spiral rows of rounded pits, the basal part again witli a few (about 5) 

 lirae. Some of the spiral rows of median zone are very fine, the majorily is rather coarse. 

 Aperture pear-shaped, with a rather acute angle above, becoming soon broader, niuch so 

 below, .slightly compressed at -the base; peristome rather thin, regularly curved, though more 

 above and below, than in median jjart; body-whorl with a conspicuous layer of enamel on its 

 moderately convex columellar side. Columella concave, thick, not angular below, thickly 

 reflected and quite covering the umbilical region. 



Alt. 16, lat. io7:, ; apert. alt. 15, lat. ó'/,! Mill. 



Of the three gizzard plates, two are large, subquadrate, with strongly rounded angles, 

 rather thick, calcareous, broadly rounded at the largest extremity, where they are yellowish- 

 white and thinner, one of them nearly straight at the opposite margin, where it is dark brown 

 and thick, lateral sides slightly undulated; the other plate has the front- and back.sides more 

 rounded, but otherwise it is similar; the interior of these plates is convex, with a nearly smooth, 

 subcircular centre and a broad, concentically striated margin, exteriorly these i^hUcs are concave 

 in their broadest part. The third plate is much narrower, elongate, strongly compressed, brown 

 with darker growth-striae, and has much the appearance of a gaping, equal-sided Uiiio pictoriiin. 

 Length of largest plates about 4'/,, their greatest breadth 4'/i, narrowest part 3'/, Mill., smallest 

 plate, long 37», high i'/, Mill. 



The radula has given only a poor result; as the soft parts seemed to be decayed, I 

 obtained only a few separate lateral teeth, I could find no median ones, probably they were 

 lost, as, according to Bkrgh, is often the case; one of the laterals (i), in a favorable ])osition. 



