108 PEOCEEDINGS OF THE NATIONAL MUSEUM vol.70 



SOLARIELLA CROSSATA, new species 



Shell small, brilliantly polished, white, thin, with a bulbous sub- 

 spherical smooth nucleus and about four subsequent whorls; suture 

 distinct, the whorl in front of it depressed; axial sculpture of nu- 

 merous equal and equally spaced plications radiating straightly from 

 the axis but hardly reaching the periphery; these become more feeble 

 toward the end of the last whorl; the incremental lines are delicate 

 and silky; spiral sculpture of fine equal striation covering the whole 

 surface, more or less strong in different individuals; around the 

 rather wide funicular umbilicus is a strong more or less beaded cord 

 with one or two conspicuous grooves outside of it; walls of the umbi- 

 licus finely spirally striated; aperture nearly circular, the margins 

 thin, sharp; internally nacreous. Height of shell, 2.2; diameter, 4.2 

 mm. U. S. Nat. Mus. Cat. No. 87358. 



Dredge by the United States Bureau of Fisheries steamer Albatross 

 off Fernandina, Fla., in 294 fathoms sand, at Station 2668, the 

 bottom temperature, 46.3° F. 



This is somewhat like S. adinophora but smaller and less elevated, 

 with feebler spirals. 



SOLARIELLA AEGLEIS Watson. 



Margarita aeglels Watson, Journ. Linn. Soc, vol. 14, p. 704, 1879; Challenger 



Rep., Gastr., p. 81, pi. 5, fig. 10, 1885. 

 Solariella acgleis Dall, Bull. Mus. Comp. Zool., vol. 18, p. 379, 1889. 



Off Fernandina, one specimen. 



Genus EUCHELUS Philippi 



EUCHELUS EUCASTA Dall 



Euchelus eucasta Dall, Ball. U. S. Nat. Mus., No. 37, p. 164, 1889. 



Shell small, trochiform, snow white, with a minute depressed 

 glassy nucleus of about 1 whorl and 5 subsequent whorls; suture 

 distinct, not deep; whorls only moderately convex, spiral sculpture 

 of (on the penultimate whorl 5, on the base 5) prominent equal and 

 equally distributed tlu'eads with subequal interspaces; axial sculpture 

 of (on the last whorl about 40) retractively oblique threads about as 

 strong as the spiral, equal and equally distributed, extending over 

 the whorls and nodulous at the intersections, forming a very regular 

 reticulum; base rounded, imperforate; aperture oblique, rounded, 

 the outer lip simple, with 2 promment posterior and several feeble 

 lirations internally; pillar lip short with 2 projecting denticles at 

 its anterior part; throat pearly. Height of shell, 6.5; of last whorl, 

 4.5; diameter, 5.3 mm. U. S. Nat. Mus. Cat. No. 93793. 



Off Georgia, two specimens. 



The extreme regularity of the reticulation is the most striking 

 peculiarity of this species. 



