394 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
temperatures 38°.5 and 40°.2 and station 4630, off Mariato Point, Panama Bay ~ 
in 556 fathoms, sand, temperature 38°. ‘ 
The most striking thing about this species, apart from its oblique form, is 
externally, the dark zone in the periostracum near the margin and the clearly 
distinguished lines of the hairs; internally the very great discrepancy between 
the two adductor scars. 
Limopsis compressus Datt. 
o 
Plate 7, figures 7, 8. 
Limopsis compressus Dall, Proc. U. S. Nat. Mus., 1896, 18, p. 16. 
Shell large, thin, compressed, with a yellowish-brown, pale, pilose epidermis ; 
surface reticulated with fine radiating striae and rather irregular elevated lines of 
growth; beaks low, but conspicuous, small and swollen; area narrow, long, 
about equal on each side of the beaks ; dorsal line straight, anterior end rounded, 
posterior produced, rounded ; interior white, smooth, with plain margins; pos- 
terior adductor scar larger and lower than the anterior; ligament central, lozenge- 
shaped, thin; hinge with about six posterior and eight anterior teeth, small, 
obscure, separated by a wide edentulous space, and obsolete in senile specimens. 
Length of shell, 45; height, 387; diam. 17.5 mm., exclusive of the hair-like 
processes of the periostracum. 
U.S. S. “Albatross,” station 3382, Gulf of Panama, in 1793 fathoms, mud, 
bottom temperature, 36° F. Type, U. S. N. Mus. 122,889. 
Other stations are as follows: 
Station. Locality. Fathoms. Bottom. Temperature F. 
3360 off Panama 1672 sand 36°.4 
3361 sf ‘s 1471 green 00ze 86°.6 
3362 Gs & 1175 mud 36°.8 
3366 af es 1067 glob. ooze 37°.0 
3374 s “ 1823 green ooze 86°.4 
3376 ‘ fc 11382 glob. ooze 86°.3 
3414 off Mexican coast 2232 green mud 86°.8 
The most conspicuous features of this species are its thin shell, very large size, 
short pelage, and pale color of the hairs. In general appearance it is not unlike 
L. basst Smith, from New Zealand, which is smaller, more inflated, and thicker. 
Limopsis jousseaumi Masi.Lie et RocHEsBRUNE, 
Felicia jousseaumi Mabille et Rochebrune, Miss. du Cap Horn, Moll., 1889, 6, p. H116, 
pl. 7, figs 9a, 9b. 
Beagle Channel, Murray Narrows, Hyades; U. S. S. “ Albatross,” station 
2780, off the southern coast of Chile in latitude 58° 1’ south, in 369 fathoms, 
