422 



Stat. 45. 7° 24' S., 1 18° 15'. 2 E. Flores-sea. 794 M. Fine grey sand with some radiolariae and 

 diatomes. i Spec. 



The Siboga-specimen is smaller (36 instead of 57 Mill.), it may not be full-grown, but 

 otherwise agrees with Smith's extensive description and his fine figure. 



2. Surcuia Melvilli n. sp. PI. XXVII, fig. 7. 



Stat. 262. 5°53'.8S., I32°48'.8E. Near Kei-islands. 560 M. Solid bluish grey mud. i Spec. 

 Stat. 300. io°48'.6S., i23°23'.iE. Timor-sea, 918 M. Fine grey mud. 2 Spec. 



Shell shortly fusiform, with long spire, thin, light yellowish red-brown. Nucleus wanting, 

 remaining whorls 11, angularly convex, concave above, lower part with very oblique, somewhat 

 irregular ribs, forming small tubercles on the upper whorls, thick folds on the lower ones; these 

 ribs are not visible in the excavation, their number is 22 on last whorl; the whole shell is 

 covered with fine growth-striae, intermingled with some coarser ones and very numerous, waved, 

 spiral lirae, as well on the ribs as in the interstices and in the subsutural excavation ; last whorl 

 rapidly attenuated below periphery, ending in a rather short, relatively very slender canal, 

 which is nearly white and sculptured with spirals in the same manner as the rest of shell. 

 Aperture oval, with a blunt angle above, peristome thin, fragile, the sinus according to growth- 

 lines probably wide, but not very deep. Columellar margin regularly curved, but suddenly 

 directed to the left, at the entrance of canal, which is contortedly directed to the left ; colu- 

 mellar margin with a white layer of enamel, interior of aperture brown, smooth. 



Alt. 62, lat. 20; apert. alt. 24Y3, lat. 8^2 Mill. 



This fine species is allied to ^S. eurina Smith (Ann. Mag. Nat. Hist. Ser. 7, Vol. IV, 

 1899, p. 239; Zool. 111. Investigator, Moll. PI. 9, fig. 4), but the folds are more numerous 

 than in that species, which has a much thicker, straighter canal and a shorter spire, a thickened 

 infrasutural margin. 5". inargaritae Smith, which I found somewhat similar in shape of spire 

 and ribs, has a considerably longer last whorl, inclusive of canal. The specimen from Stat. 262 

 is a smaller, much worn shell, of somewhat doubtful character. 



3, Surcuia supracostata n. sp. PL XXVII, fig. 8. 



Stat. 45. 7°24'S., ii8°i5'2E. Flores-sea. 794 M. Fine grey mud with some radiolariae and 

 diatomes. 2 Spec. 



Shell fusiform, with short canal, thin, shining, light yellowish-white. Nucleus wanting, 

 remaining whorls 8, nearly regularly convex, very slightly exavated below the conspicuous but 

 shallow suture in lower whorls, more so in upper ones. Sculpture consisting in the upper whorls 

 of thick axial ribs, disappearing on the sixth whorl, which is 9-ribbed, the lower whorls are 

 nearly smooth, but are sculptured under the lens by fine, strongly waved growth-lines, more 

 conspicuous at irregular intervals ; the whole shell crossed by very faint spirals, scarcely visible 

 on the upper part of whorls, stronger on the lower part, having the appearance of crowded 

 lirae on the canal. Last whorl regularly attenuated below, ending in a short, wide canal. Aper- 



58 



