74 



o-reatest inflation. Greatest diameter contained 5 times in length of the shell. Tube very sHghtly 

 compressed between front and back curves. Surface polished, without perceptible growth striation. 

 Aperturc oblique, rounded oval ; anal orifice subcircular, its edge even, unslit. 

 Length 11,7 mill., diam. at aperture 1,24 X i,37, at greatest inflation 2,06 X 2,33, at apex 

 0,48 X 0,55 mill. (the antero-posterior dimensions given first in each case). 

 Pliocene of southern Ital)- & Sicily. 



*22. Caduhis anguidcns Melvill & Standen. PI. III, fig. 50. 



1898. Cadulus angiiidens Melvill & Standen, Journ. of Conch. IX, p. 32, pi. i, fig. 6. 

 1897 — 98. Cadulus anguidens Melvill & Standen. PiLSBRY & Sharp, Manual of Conch., vol. 

 XVII, p. 253, pi. 39, fig. 4. 



Diagnosis. Shell a little arcuate, tapering toward the apex, pellucid white. Aperture 

 rounded-ovate, the margin oblique-, posterior orifice small, round, simple and thin. Length 8, 

 diam. at mouth i, at apex 0,5 mill. (M. & S.). 



Distribution. Madras. (Henderson). 



Remarks. A graceful, attenuate, sHghtly arcuate Cadulus, gradually increasing in 

 diameter till the oblique aperture is reached. The shell is subpellucid, white, quite smooth; 

 posterior or apical orifice minute, simple, round, thin, the mouth being roundly-ovate, with very 

 oblique margin. Two specimens, differing from any in the national collection. (M. & S.). 



23. Cadulus zonatus n. sp. PI. VI, fig. 57. 



Stat. 214. 6° 30' S., 121° 5 5' E. Banda Sea. 2796 Metres. Grey and green mud, superficial layer 



more liquid and brown. i Spec. 

 Stat. 254. s°4o' S., 132° 26' E. Arafura Sea. 310 Metres. Fine grey mud. i Spec. 



Diagnosis. Shell moderately curved, white and transparent with many deeply incised 



circular lines as in D. polituin •, very slightly compressed between front 



and back curves, especially near the apex. Greate.st swelling at about one 



third the shell's length from the anterior aperture and tapering gently 



!.•;„_ 3y_ toward both sides. The outer curve is more bent than the inner and 



Ant. apert, and apical orifice j-^ther suddcnly depressed near the anterior aperture. Anterior aperture 



of Cadulus zonatus. 



slightly oblique the margin on the outer curve flattened. Apex sub-circular, 

 with moderately strong walls. 



Length 14 mill., antero-posterior diam. of apert. 1,5, lateral diam. of apert. 1,35, greatest 

 diam. 2,3 mill. Diam. of apex 0,65 mill. 



24. Cadulus pulchcri'iiiiiis n. sp. PI. VI, figs 58, 59. 



Stat. 314. 7°36'S., II 7° 30'. 8 E. Flores Sea. 694 Metres. Fine sandy mud. 6 Spec. 



Diagnosis. An exceedingly fine and graceful shell, strongly curved, much attenuated 

 yellowish or grayish white, with many regular obliquely encircling lines, deeply incised in the 



