NO. 1139. J) KEf'-Ji: \TKll MOLLl'SCA YEEllILL AXD BUSH. 



erably longer than the anterior aud slopes pretty regularly and gradu- 

 ally from the beaks to the posterior extremity. The surface i.s covered 

 with very regular, rather coarse, rounded, concentric ridges separated, 

 by deep furrows of about the same breadth. The epidermis is light 

 straw color, only slightly lustrous and scarcely iridescent. The hinge- 

 plate is large and strong, much elongated posteriorly, the two parts 

 forming a very obtuse, curved angle at- the beaks. The anterior portion 

 is the broader, much the shorter, and bears about nine teeth, of which 

 the three distal ones are much the larger and occupy about one-half 

 the length of the series, the proximal ones being very small. The pos- 

 terior portion is narrower and curved throughout; it bears seventeen 

 or eighteen teeth of which seven or eight proximal ones are very small 

 and acute. The hinge-plate becomes quite narrow under the beaks 

 where the two series of teeth are interrupted by a very small edentu- 

 lous space, scarcely wider than the adjacent teeth. All the larger teeth 

 are rather crowded and compressed in the direction at right angles to 

 the line of the hinge so that they are only sligbtly V-shaped. Seen in 

 a dorsal view they appear thin and not very prominent above the mar- 

 gin of the shell, when the tips are broken they often appear three- 

 lobed. The ligament is well developed and occupies a distinct, sub- 

 marginal furrow behind the beaks. The muscular scars are well 

 marked, small and nearly round; the pallial line is interrupted at a 

 point a short distance from the posterior muscular scar but there is no 

 visible sinus. The interior of the shell is grayish white but not pearly; 

 the ventral edge is slightly beveled. 



Length of the largest specimen, 7 mm.; height, 5.5 mm. 



Two specimens, among Foraimnifera, at station 2385, X. lat. 28 51', 

 W. long. 88 IS', in 730 fathoms, 188'). 



TINDARIA CUNEATA (Smith) Dall. 



Malh'tift cuneaia SMITH, E. A., Report Voy. Challenger, Zoiil. Laiiiellibrancliiata, 



XIII, p. 247, pi. xx, tigs. 10, 10, 1885 (not Jeffreys). 

 Malletia (Tindaria) smithii DALL, Bull. Mas. Comp. ZooL, XII, p. 255, 1886. 



A single young valve, among Foraminifera, at station 2655, K. lat. 

 27 22', W. long. 78 7' 30", iu 338 fathoms, 188G. Off Grenada and 

 the West Indies, iu 390 to 1,140 fathoms. Smith and Dall. 



As the species described and figured by Mr. Smith under the name 

 ofMalletia cuncata is a true Tindaria, his name does not conflict with 

 the Malletia cuneaia of Jeffreys which is a true Malletia, and therefore 

 should remain unchanged. 



Subgenus TINDARIOPSIS Verrill and Bush, 1897. 



Tlndariopsis YKKRILL and ]>usn, Amer. .Tourii. Sri., III. pp. 59, 63, .January, 1897. 

 Type. Thiilariopsis <t<jtithi<l (Dall). 1 



'. VallHia (Tindaria) agalhida Dall, Proc. U. S. Nat, Mus.. XII. p. 252, pi. xm, fig. 

 10, 1S89. 



