INSTITUTE OF SCIENCE, PHILADELPHIA. 39 



This elegant species is nearest the recent D. liinncmformis Kiener, from 

 which it differs in its stronger sculpture, proportionally longer spire, less 

 reticulated early whorls ; fuller and more accentuated whorls, deeper notch 

 and less arcuate columella. 



Daphnella elata Dall. 

 Daphnella elata Dall, Rep. Blake Gastr., p. 105, 1S89. 



Caloosahatchie beds, rare. Recent on the coast of the Carolinas and south- 

 ward in 15 to 22 fathoms. 



Three specimens of this very elegant little species were obtained from the 

 marls. It is possible that it should be referred to Mangilia, as restricted, but 

 the shell is about midway between that group and Daphnella. 



Daphnella modesta n. s. 

 Plate 2, figure 4. 



Rare in the Caloosahatchie beds. 



Shell with a small, smooth, tilted nucleus of about two whorls and about 

 four and a half subsequent whorls ; shape short-fusiform, the whorls well 

 rounded, the last much the largest; spire not more than half as long as the 

 shell ; spiral sculpture of numerous distinct, slightly elevated, subequal threads, 

 with wider interspaces, in which near the aperture in the adult faint intercalary 

 threads begin to appear ; transverse sculpture of incremental lines, not very 

 distinct, and (on the last whorl sixteen or seventeen) narrow, rounded, some- 

 what unequal wave-like ribs which begin at the suture, follow the curve of the 

 lines of growth, cross the whorl and only fade away near the canal ; they are 

 about equally strong all the way ; the last rib is a little stronger than the oth- 

 ers ; fascicle not strongly marked, the ribs cross it and the spirals are a little 

 finer and more close-set upon it ; suture distinct, not channelled, undulated by 

 the ribs ; notch wide and shallow ; aperture elongated, not wide, the canal not 

 differentiated, the body with very little callus ; outer lip simple ; throat without 

 lirse. Max. Ion. of shell 6.5 ; max. lat. 3.0 mm. 



This pretty little species has no very marked characters, yet on comparison 

 with the recent forms it seems to agree with none of them. It is nearest D. 

 retiftra Dall, but has a different surface. It recalls Mangilia biconica, but its 

 characters are essentially those of Daphnella. 



Subgenus Glyphostoma Gabb. 



Glyphostonia gratula Dall, var. incilis Watson. 



Pleurotoma (Dri/lia) incilis Watson, Linn. Soc. Journ. xv. p. 425, Oct. 1881. Rep. Chall. 



Gastr., p. 304, pi. xxiv. fig. 5, 1885. 

 Pleurotoma {Drillia) gratula Dall, Bull. M. C. Zool. ix. p. 64, Aug. 1881. 

 Glyphostonia gratula Dall, Rep. Blake Gastr., p. no, pi. xii. fig. 10, 1889 (var. incile). 



Caloosahatchie beds, one adult specimen. Recent in the Gulf of Mexico 

 and among the northern Antilles in 227 to 447 fathoms. 



The fossil .specimen is of but moderate size, but agrees sufficiently with 

 the recent specimens to leave no reasonable doubt as to its identity. 



