TEXTULARIIDAE—BOLIVINA. 27 
region as represented by this variety, and it may be found to be 
common in the shallower waters of the tropical Atlantic. 
Bolivina mayori, new species. 
(Plate 3, Figures 5, 6.) 
Test elongate, somewhat compressed, of nearly uniform width, except in 
the extreme young; chambers numerous, distinct; sutures depressed; wall 
thin, translucent, coarsely punctate, especially in the young; chambers in 
the later portion extending clear across the test, the last-formed chamber in 
the adults forming the entire width of the test and usually of a less diameter 
than the preceding; the wall smooth, except in the early portion, which has 
a few longitudinal cost; aperture in the adult terminal, elongate, extending 
nearly across the peripheral end of the last-formed chamber with a slight 
projecting lip. 
Length up to 0.85 mm. 
This species most nearly resembles B. porrecta H. B. Brady, but 
differs in the more attenuate form and the ornamentation of the 
early portion. The punctations over a large part of the surface are 
arranged in longitudinal lines. In old-age specimens the diameter of 
the test is considerably less in the last-formed chamber than at the 
maximum width of the preceding chambers. The aperture would 
place this species in the subgenus Bifarina. It has occurred at 
nearly half the stations, but not in any considerable numbers. 
These specimens resemble very much Brady’s figure in the Chal- 
lenger Report (plate 53, fig. 14), which he refers to Bolivina nobilis 
Hantken. A comparison of these with Hantken’s original figures 
shows that the two are probably different species. Brady’s speci- 
mens were all from the South Pacific, and our specimens from the 
Tortugas are probably identical or very closely related to those of 
the South Pacific. 
Bolivina striatula, new species. 
(Plate 3, Figure 10.) 
Test elongate, gradually tapering from the somewhat rounded initial end 
to the broad apertural end; chambers numerous, distinct, slightly inflated; 
sutures very slightly depressed; early portion of the test less compressed than 
the adult, the peripheral margin rounded in the young, sharply angled in the 
adult, early portion of the test with numerous longitudinal striations occupy- 
ing about half the length of the test, following the chambers with a very 
fine reticulate pattern, the final chambers being smooth, hardly punctate. 
Length 0.35 mm. 
This species is peculiar in the three different stages of ornamenta- 
tion and the development of the test. The early portion is more or 
less rounded, with numerous fine longitudinal cost, followed by a 
few more compressed chambers, the surface of which has a very fine 
reticulate pattern, not seeming to be raised from the surface of the 
test and yet distinct with a considerable magnification. The last- 
