336 BULLETIN : MUSEUM OF COMPARATIVE ZOOLOGY. 



near the Galapagos Islands, in 885 fathoms, ooze, temperature 37°.2 ; station 

 3431, off Mazatlan, in 995 fathoms, mud, temperature 37°; and station 4654, 

 24 miles NW. of Aguja Point, Peru, iu 1036 fathoms, mud, temperature 37°. 3. 

 The National collection also contains a full-grown specimen from southern Chile, 

 in about south latitude 50°, which has about six whorls and measures 32 mm. in 

 height and 28 mm. in maximum diameter. This specimen was collected by Dr. 

 Crawford, aud has a heavily callous pillar with a deep chink, but no actual perfor- 

 ation, behind it iu the umbilical region. The greatest diameter is well up on the 

 whorl, which gives the species a peculiar " shouldered " aspect. 



Polinices (Euspira) pardoanus Dall, n. sp. 



Shell small, with about four whorls, white with a straw-colored periostracum, 

 depressed turbinate, smooth except for lines of growth and occasional obscure, 

 irregular, slightly elevated spiral markings ; spire (defective) probably blunt, 

 the form of tlie shell rather wide and depressed ; aperture ovate ; outer lip thin, 

 obliquely retractive, simple; body with a marked callus; pillar thick aud rather 

 wide behind, appressed against the upper part of the umbilicus, the thickened 

 part narrower in front, terminating where an impressed spiral line starts at its 

 entrance into the umbilical perforation near the anterior edge ; umbilicus narrow, 

 twisted ; the margin of the aperture sliglitly thickened and compressed. Height 

 (about), 13 ; of last whorl, 10 ; of aperture, 9 ; max. diam. 14 mm. 



U. S. S. " Albatross," station 3361, iu the Gulf of Panama, in 1471 fathoms, 

 ooze, bottom temperature 36°.6 F. U. S. N. Mas. 123,046. Also at station 

 3407, near the Galapagos Islands, in 885 fathoms, ooze, temperature 36°. 2 F., a 

 youug specimen apparently of the same species ; and a worn but full-grown 

 specimen at station 3366, off Cocos Island, Gulf of Panama, in 1067 fathoms, 

 ooze, temperature 37°. F. 



Although the apex of each specimen is more or less eroded, it is still evident 

 that this is a particularly fiatteued species, which with its milk-white shell and 

 yellowish periostracum is sufficiently characteristic. The suture is distinct, but 

 neither appressed nor channelled, though, when eroded, the latter is apt to be 

 simulated by a channel of erosion. 



Polinices (Euspira) vaginatus Dall, n. sp. 



This species is represented by a number of more or less defective specimens and 

 is best described comparatively with P. solutus Gould. 



Tiie shell is white with au olivaceous periostracum; the spire is much flatter 

 than in P. solutus ; the furrow nt the bottom of which the suture lies is wider and 

 is not channelled ; in the young the whorls have a " shouldered " asjicct, but iu 

 the adult they arc evenly rounded; the umbilicus is cylindrical and rraches nearly 

 to the apex of the shell, iu solutus it is barely a narrow chiuk behind the reflection 



