888 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxi. 



ERYCINA (PSEUDOPYTHINA) COMPRESSA Dall. 



Erycina (Pseudopythina) compressa, new species. 



(Plate LXXXVII, figs. 1, 8.) 



B. 9. Shell large, subquadrate, tbiii, moderately compressed, white, 

 covered with a conspicuous, thin, wrinkled, partly glossy periostracuni ; 

 nearly equilateral, the posterior end slightly broader, both ends 

 rounded, the basal margin nearly straight; beaks inconspicuous, sur 

 face with strong, irregular incremental lines, but no radial sculpture; 

 pallia! scar rather wide and irregular, merging into the subequal, rather 

 narrow adductor scars; resilium large, wide, and long, more or less 

 calcareous ventrally, left valve with one obscure cardinal tooth, right 

 valve with the tooth better developed; the right dorsal valve margins 

 overlap those of the left valve a little, but there are no distinct lamellre. 

 Lon. 18, alt. 13, diam. G mm. 



Dredged on muddy bottom in from 4 to 28 fathoms in the eastern 

 part of Bering Sea, south of Kunivak Island, the eastern Aleutians, 

 and southward to Sitka, Alaska, by Mr. W. H. Dall. 



This is easily discriminated from the other species by its flattened 

 and uormal form. As it has always been found free in the dredge it is 

 probably not a commensal species. 



BORNIA BARBADENSIS Dall. 

 .Bornia barbadensis, new species. 



A. 13. Shell rather large for the group, evenly ovate, moderately 

 convex, polished, white, covered with a brilliant yellowish periostracum, 

 inequilateral, the anterior end shorter; dorsal margins con vexly arcu- 

 ate; ends rounded, the posterior end obliquely, and produced near the 

 base which is evenly con vexly arcuate; beaks low, distinct; teeth 

 normal, adductor scars small and high up, margins entire. Lon. 15, 

 alt. 12, diam. 5 mm. 



A dead and somewhat dilapidated valve was dredged in 100 fathoms 

 at Barbados, but is clearly distinct from any of the other East Amer- 

 ican species. 



BORNIA (CERATOBORNIA) LONGIPES Stimpson. 



A. 14. This was described as Lepton but the shell is a typical Bornia.^ 

 The soft parts resemble those of Montacuta percompressa Dall, as 

 figured by Verrill under the name of ferruginosa Montagu,^ except 

 that there are one posterior and two anterior cirrhi arising from the 



' Proc. Bostoa Soc. Nat. Hist., V, February, 1855, p. 111. 

 - Trans. Conn. Acad. Sci,, VI, 1884, p. 225, pi. xxx, fig. 13. 



