■34 BEV. K. BOOG WATSON ON THE 



■high, perpendicular, roundly oval form, ending in a minute re- 

 verted, hardly in-curled, prominent tip which overhangs the base ; 

 the longitudinal striation consists rather of corrugations than 

 ribs ; and the lines of growth are slight and unequal. The slit, 

 which is small and oval, arises simply from the removal of the 

 •crest. The inside is corrugated like the outside, the opening 

 runs up and backwards into the apex ; the septum, which is flatly 

 arched lies very close to the front wall of the shell and comes 

 far down. 



I have not described the species, because none of the speci- 

 mens are in very good condition. They are also all very small ; 

 but the species is probably a small one, judging from the minute 

 size of the embryonic shell. Coming from a locality visited and 

 carefully dredged by the ' Chevert ' 'Expedition, the species might 

 be expected in the lists of that expedition given in the JST. S. 

 Wales Linn. Soc. Proc. 1876-78. I have failed to find it there; 

 but some other explorer of that difficult record may be more 

 successful. 



6, PUNCTUEELLA PLECTA, U. sp. 



St. 24. March 25, 1873. Lat. 18° 38' 30" N., long. 65° 5' 30" W. 

 OflP St. Thomas, north of Culebra Island, Danish W. Indies. 

 390 fms. Coral-mud. 



SJiell. — Small, porcellaneous, oblong, scarcely perceptibly 

 broader in front ; its slopes are conical and straight till close to 

 the top, which projects backwards but little ; there are strongish 

 ribs and stUl stronger concentric threads ; the slit is short and 

 broad. Sculpture. There are about 35 strongish rounded riblets 

 with feebler ones between, bringing up the total number to 60 or 

 70 ; overlying these, and forming minute knots at the crossings, 

 are rather stronger, concentric, rounded threads, giving to the 

 surface the wattled appearance from which the name is taken. 

 Colour faintly brownish grey. Apea; rather coarse, curled in, but 

 very little reverted or flattened; there are just two whorls in all. 

 Slit oblong, being short and broad ; as seen from without, one half 

 is open leading into the interior, the other is closed by the very 

 curved septum. Harbin crenulated and crimped by the ribs. 

 Inside glassy, blunt at the top, not being hollowed into the apex, 

 strongly furrowed by the ribs, less so by the concentric threads ; 

 there is no anterior furrow : seen from within, the slit is semi- 

 oval, and the strong septum is excessively short and straight and 



