130 



OCEANIC TINTINNOINA OF LAST CRUISE OF CARNEGIE 



more sharply convex conical (i8°) for a distance within 1.22 

 oral diameters. The open aboral end lacks an aboral cylinder 

 and there are 7 low, decurrent, more or less ridgelike, 

 slightly left-turning fins, the length of which hardly exceeds 

 0.4 total length. 



The thin wall is glass-clear. 



Length, 312 to 39611. 



In proportions (length 7.0 to 14.2 oral diameters) and in 

 actual length, Salpingella jtigosn shows considerable varia- 

 tion. The suboral ridges accord with the fins in number 

 (6 to 7) and direction, and were possibly constructed by the 

 same or similar agents at the time of fission. 



Salpingella jiigosa differs from all other species in the 

 presence of suboral ridges. In some ways it resembles S. 

 acuminata, but the shape of the suboral funnel is different, 

 being concave conical in acuminata and convex conical in 

 jugosa. 



Recorded from two stations in the Pacific, as follows: one 

 (80) in the Galapagos region, and one (146) in the Cali- 

 fornia region. 



There are i pump and i net sample, both taken at 50 

 meters. Frequency, minimum. 



Temperature: pump sample 22?37, net sample 26?o6. 

 Salinity: pump sample 34.91, net sample 35.95. Density: 

 pump sample 24.07, net sample 23.75. P^' pump sample 

 8.30, net sample 8.19. 



Salpingella ricta Kofoid and Campbell 

 Salpingella ricta Kofoid and Campbell, 1929, p. 354, fig. 672. 



The lorica is gracefully trumpet-shaped, with flaring 

 funnel, with 7 fins, and with marked, short rugosities over 

 the surface; its length is 7.5 oral diameters. The oral rim is 

 somewhat thickened as a narrow brim. The suboral funnel 

 flares widely as a decidedly concave basal segment of a cone 

 (75°), with a length of only 0.3 oral diameter and with 

 approximately a similar diameter at its lower end. The 

 tapering (2°) shaft has a length of 5.9 oral diameters, and its 

 diameter at the lower end is only a little less than at the 

 neck. The convex aboral cone (15°) has a length of about 

 1.33 oral diameters, and at its open lower end is a short 

 cylinder above which arise the 7 low fins, the length of 

 which reaches 2.42 oral diameters. These fins are right- 

 turning (5°) in their upper half and practically vertical 

 lower down. 



The thin wall (about o.oi oral diameter) is decidedly 

 dense, and its surface has short, roughened linear striae, 

 giving the lorica a unique character. 



Length, 338 to ^ooyi. 



The proportions (length 6.2 to 8.0 oral diameters) and the 

 length of lorica of this species suggest the possibility of in- 

 clusion of related forms under the same name. 



Salpingella ricta is at once set apart from other species by 

 the roughened surface. In general shape it recalls S. acumi- 

 nata, but it averages longer and thinner. The suboral flare 

 (75° to 90°), the more numerous fins, and the tapering 

 shaft are differences. 



Recorded from two stations in the Pacific, as follows: one 



(146) in the California region and one (153) in the Pacific 

 equatorial region. 



There are 2 net samples, both taken at 100 meters. Fre- 

 c]uency, minimum. 



Temperature, 20?07-22?73 (2i?4o); salinity, 34.32-34.73 

 (34.52); density, 23.83-24.24 (24.03); pH, 8.26-8.28 (8.27). 



Salpingella rotundata Kofoid and Campbell 



Salpingella rotninhita Kofoid and Campbell, 1929, p. 354, fig. 

 677. 



The short, rather plump, test-tube-shaped lorica, with sac- 

 cular aboral region with ridgelike fins, has a length of 7.3 

 oral diameters. The oral margin is thin and the suboral 

 funnel is a narrow basal segment of an inverted truncated 

 cone (28°), with a length of barely i.o oral diameter and a 

 posterior diameter of 0.84 oral diameter. The shaft remains 

 tubular for somewhat less than 4.0 oral diameters, and then 

 gradually expands (8°) within 2.5 oral diameters to a diam- 

 eter of nearly i.o oral diameter. Below this level it quickly 

 contracts, with an inverted, flatly rounded shoulder, to the 

 tiny, short, open aboral cylinder. There are 6 subequi- 

 distant ridgelike fins above the shoulder, with lengths of 1.66 

 oral diameters. 



The hyaline wall is thin. 



Length, 92 to 16011. 



There is not a great deal of variation in proportions 

 (length 7.3 to 8.8 oral diameters), but there is considerable 

 in length. 



Salpingella rotundata is one of the smaller species, but is 

 unlike the others in its posterior characters. The swollen 

 aboral end recalls that of S. gloc){entdgeri, but that species is 

 more than twice as long and has a gracefully flaring, trumpet- 

 like funnel. 



Recorded from two stations (43, 45) in the Galapagos 

 region. 



There are 2 pump samples, i each taken at the surface 

 and at 50 meters. Frequency, minimum. 



Temperature, i6?53-22?43 (i9?48); salinity, 34.95-35.26 

 (35.10); density, 24.31-25.66 (24.98); pH, 7.93-8.12 (8.02). 



Salpingella seeata (Brandt) Kofoid and Campbell 



Salpingella seeata, Kofoid and Campbell, 1929, p. 355, fig. 683; 

 Bernstein, 1931, p. 14. 



The elongated lorica, with flaring funnel with 8 fins and 

 aboral cylinder, has a length of 6.8 oral diameters. The oral 

 rim lacks a brim, and the thin, gracefully concave-conical 

 (67°) funnel contracts evenly to the throat below. The 

 throat is at 0.49 oral diameter below the rim and has a 

 diameter of 0.4 oral diameter. The long shaft is tubular for 

 0.66 total length, and then becomes conical (9°) for 1.68 

 oral diameters. At its lower end it rounds ofif with a bare, 

 minute shoulder to the open aboral cylinder. The cylinder 

 is laterally concave, its length is only 0.21 oral diameter, 

 and its diameter is only 0.13. There are 8 low, thickened 

 ridges, which are rounded aborally and gradually die out 

 above; their length reaches 2.2 oral diameters. 



