EAST AMERICAN SCAPHOPOD MOLLUSKS. 



117 



and C. pandionis, with its longer, curved neck, and small apical 

 orifice. It begins to assume the crooked appearance of C. pandionis, 

 but differs again in its apical features. It is larger than C. agassizii 

 and appears to inhabit a somewhat deeper water zone. 



CADULUS (PLATYSCHIDES) RUSHII RUSHII Pilsbry and Sharp. 



Plate 18, fig. 15. 



This typical subspecies includes the larger forms described under 

 Cadulus rusliii, with a type measurement of — length, 11.6 mm.; 

 diameter, 2 by 1.8 mm.; anterior aperture, 1.6 by 1.4 mm.; apical 

 aperture, 0.6 by 0.53 mm. 



The type is in the collection of the Philadelphia Academy of 

 Sciences and was collected by Commander Rush, United States Navy, 

 off Cape Hatteras, in 293 fathoms. 



The following are the lots in the National Museum collection: 



Num- 

 ber of 

 speci- 

 mens. 



Cat. No. 



U.S.N.M, 



Locality. 



1906.51 



202826 

 3S177 



203223 

 38682 



202960 

 78237 

 38675 



202958 

 38676 



202957 

 76663 



203222 

 38769 

 38655 

 50379 

 38648 

 .53009 

 38647 

 53077 

 38654 

 38652 

 38656 

 38680 



151910 

 51160 



202996 

 40240 



202959 



202838 



202827 



202937 

 78236 



203008 

 78237 

 78948 



202825 

 38102 

 43986 



202956 

 35765 



35623 



94295 



Marthas Vineyard, U. S. B. F. Station 1093 



....do : 



....do • 



....do 



Marthas Vineyard, U. S. B. F. Station 2222 



....do : 



Off Nantucket, U. S. B. F. Station 2710 



OS Nantucket, U. S. B. F. Station 2192 



Off Block Island, U. S. B. F. Station 2203 



... .do 



....do 



Off Block Island, U. S. B. F. Station 2207 



Off Marthas Mneyard, U. S. B. F. Station 999. . . . 

 Off Marthas \ineyard, U. S. B. F. Station 2212.. . 

 Off Marthas Vineyard, U. S. B. F. Station 999. . . . 



Off Georges Bank, U. S. B. F. Station 2529 



Off Marthas Vineyard, U. S. B. F. Station 894. . . . 

 Off Marthas MneVard, U. S. B. F. Station 2581 . . . 

 Off Marthas \inevard, U. S. B. F. Station 892. . . . 



Georges Bank, U.'S. B. F. Station 2586 



Off Marthas \"ineyard, U. S. B. F. Station 997. .. . 

 Off Marthas Vineyard, U. S. B. F. Station 947. . . . 

 Off Marthas Vineyard, U. S. B. F. Station 102S.- . 

 Off Marthas Vineyard, U. S. B. F. Station 2213.. . 

 Off Marthas Vineyard, U. S. B. F. Station 2547. . . 



do 



do 



South of Long Island, U. S. B. F. Station 2234 . . . . 



do 



Off Marthas Vineyard, U. S. B. F. Station 895. . . . 

 Off Marthas \'ine"vard, U. S. B. F. Station 1095.. . 



Off Nantucket, U. S. B. F. Station 2192 



Off New Jersey, U. S. B. F. Station 2709 



do / 



Off New Jersey, U. S. B. F. Station 2710 



Chesapeake Bay, U. S. B. F. Station 2729 



Chesapeake Bay, U. S. B. F. Station 898 



do ■ 



Chesapeake Bay, U. S. B. F. Station 2263 



do " 



Off Cape Hatteras, North Carolina, U. S. B. F. 



Station 2111. 

 Off Cape Hatteras, North Carolina, U. S. B. F. 



Station 2115. 

 Off Cape Hatteras, North Carolina, Blake Station 



35. 



349 fms., 40°, bu. m. s. 



Do. 



Do. 



Do. 

 1,537 fms., 36.9°, gy. oz. 



Do. 

 984 fms., gn. m. 



1.060 fms., gn. oz. st. 

 705 fms., 38.9°, gn. m. s. 



Do. 

 Do. 



1.061 fms., 38.6°, gn. m. 

 266 fms., gn. m. 



428 fms., 40°, gn. m. 

 266 fms., gn. m. 

 662 fms., 39°, gn. m. 

 365 fms., 40°, br. m. 

 394 fms., gn. m. 

 487 fms., br. m. s. 

 328 fms., 40.5°, gy. m. 

 335 fms., 40°, yl. m. 

 319 fms., 44°, s., m. 

 410 fms., 41°, vl. m. 

 384 fms., 39.5°, gn. m. 

 390 fms., 40°, gn. m. 



Do. 



Do. 

 816 fms., 39°, gn. m. 



Do. 

 238 fms., 42°, sft. m. 

 321 fms., 40°, gn. m. 

 1,060 fms., 38.6°, gn. oz. 

 866 fms., br. m. 



Do. 

 984 ms., gn. m. 

 679 fms., 38.5°, gn. For. oz. 

 300 fms., 44°, m. 



Do. 

 430 fms., gn. m. 



Do. 

 938 fms., gn. m. 



843 fms., 39°, m., s. 



300 fms., gn. m. (Rush). 



