Proc. Zool. Soc. Lond. 1901, p. 145, PI. 24, fig 1 Clathurdla^ 



it inay have some resemblance, it differs in many particulars. 



I ulata n. sp. PI. XXIX, fig. 1 . 



Stat. 51. Madura-ba) 1 M. I sand with sliclls and stooes. 1 Spec. 



Shell pyramidal, with very short canal, thin, semipellucid, reddish-brown with ;i white 

 at tin- shoulder, a white e. mal. ribs and part <>f spirals. Whorls m, of which about 3 

 form the nucleus, with very deep suture, tin- uppermost whorl smooth, the other ones with a 

 conspicuous keel; post-nuclear whorls very convex, with a deep, waved suture. Sculpture con- 

 s i s t i n l; of remote, rounded, axial ribs, ., in number on last whorl and numerous spiral lirae, 2 

 below the suture, 5 strong ones on penultimate whorl, of which the upper 2 border 

 the white zone and are white themselves, the V' is very strong, but falls in the suture of upper 

 whorls, forming the strong spiral rib on last whorl, which suggested the name, accompanied 

 by a narrow one; below this the shell is rapidly contracted, with only faint spirals, hut divided 

 by the ribs, which produce beautiful excavations in their interstices (reminding those of Clath. 

 canal with a few stronger lirae; moreover the shell is sculptured by conspicuous 

 growth-lines, as well en the ribs as in their excavated interstices and a few intermediate lirae, 

 producing on the whole shell a fine cancellation. Aperture oval, rounded above, with a short, 

 open canal below, peristome thin, with a rather deep sinus above, columellar margin nearly 

 straight, with a conspicuous layer of enamel, not appresscd, leaving an umbilical chink; interior 

 of aperture with a few lirae. 



Alt. 14 1 /,, lat. 5; apert. alt. 3 ■'/,.,, lat. i 1 /, Mill. 



This species has some resemblance with a very elongate Phos senticosus, but is of course 

 quite different. Perhaps it might as well be located in Clathurella on account of its sculpture 

 and aperture, but it appears that it is more allied to some species of Mangilia. 



14. Mangilia halmaherica n. sp. PI. XXIX, fig. 2. 



Stat. [37. Betweel] Makjan and Halmahera. 472 M. Fine, dark muddy sand. 4 Spcc. 



Shell fusiform, with rather short canal, pellucid, white. Whorls about S, of which about 

 3 form the nucleus, which is large, convexly-whorled, al first smooth, then axially ribbed; post- 

 nuclear whorls angular, concave above. Sculpture consisting of rather narrow axial ribs, about 

 12 or [3 on last whorl, crossed by spirals, of which one more or less strong one, just below the 

 suture, another at the angle and one or two on the lower part; last whorl with canal, with about 

 spirals, those on the upper whorls and 5 upper ones on last whorl are sharply tuben-led 

 in p the ribs. those on the contracted part of last whorl and canal, more plain : moreover 



is covered with fine growth-lines. Aperture elongately-oval, angular above, with 

 r short, wide canal below; peristome thin, with a moderately deep sinus above, colu- 

 mn slightly concave above, directed to the left below. 

 Alt. f \, lat. 3; apert. alt. 3'/,, lat. 1 Mill. 



70 



