128 



OCEANIC TINTINNOINA OF LAST CRUISE OF CARNEGIE 



S. rotundata, different fins, and differing proportions. Its 

 size alone distinguishes it from the remaining tropical 

 species. 



Recorded from eight stations, five in the Atlantic and 

 three in the Pacific, as follows: two (17, 18) in the Sargasso 

 Sea, three (22, 23, 26) in the Atlantic equatorial region, two 

 (45, 46) in the Galapagos region, and one (136) in the Cali- 

 fornia region. 



There are 3 pump and 5 net samples, of which i was 

 taken at the surface, 4 at 50 meters, and 3 at 100 meters. 

 Maximum frequency, 2 per cent at station 23; other records 

 minimum; the average in Atlantic net samples is 1.5 per 

 cent. 



Temperature : Atlantic, pump samples 24 ? 1 0-24 ? 44 ( 24 ? 27 ) , 

 net samples 20?32-2i?85 (2i?05); Pacific, i8?87 and 2i?69- 

 23?30 (22?48), respectively. Salinity: Atlantic, pump sam- 

 ples 36.14-36.18 (36.16), net samples 36.04-36.81 (36.48); 

 Pacific, 35.02 and 35.21-35.32 (35.26), respectively. Density: 

 Atlantic, pump samples 24.42-24.49 (24.45), net samples 

 25.30-26.07 (25.62); Pacific, 25.09 and 24.11-24.48 (24.24), 

 respectively. pH: Atlantic, pump samples 8.21, net samples 

 8.14-8.27 (8.21); Pacific, 8.29 and 8.12-8.16 (8.14), re- 

 spectively. 



Salpingella decurtata Jorgensen 



Salpingella decurtata, Kofoid and Campbell, 1929, p. 352, fig. 

 685. 



The short, bradlike lorica, with low, rimlike flare and 

 left-turning fins, has a length of 8.5 oral diameters. The thin 

 oral rim is surrounded by a thick-edged low funnel. The 

 suboral funnel is a basal segment of a concave cone (70°) 

 with a length of less than 0.25 oral diameter, and with a 

 diameter of 0.82 oral diameter at its lower end. The shaft 

 is tubular in the anterior 0.55 and conical (12°) in the re- 

 maining 0.45. The lower part of this region is thin, and 

 there is a narrowed open cylinder within its aboral tenth. 

 There are 4 to 8 left-turning, low, plica-like fins which run 

 up 0.25 to 0.33 total length. 



The wall is thin and hyaline. 



Length, 128 to 15011; diameter, oral 16 to 2311, shaft 12 

 to i6u. 



Salpitigella decurtata resembles S. subconica closely, but 

 is proportionately longer, and has a shorter and wider sub- 

 oral collar, a stouter shaft, and shorter, narrower fins. It is 

 longer and less stout than S. ctirta, and has a wider collar 

 and more numerous, narrower fins. From S. mlnutissima it 

 may be distinguished by its less gradual suboral flare, and 

 longer fins. Salpingella lineata lacks suboral flare and has 

 fewer, bladelike fins than decurtata. The remaining species 

 are much longer. On account of its size and transparency, 

 and because of attachment to organic debris, this and other 

 small species are commonly overlooked in plankton material 

 quickly examined. 



Recorded from one station (16) in the Gulf Stream, in a 

 pump sample taken at 50 meters. The frequency is at a 

 minimum. 



Temperature, 23?64; salinitv, 36.41; density, 24.84: pH, 

 8.23. 



Salpingella faurei Kofoid and Campbell 

 Salpingella faurei Kofoid and Campbell, 1929, p. 352, fig. 686. 



The elongate, narrow, bradlike lorica, with 8 fins, has a 

 length of 13.4 oral diameters. The oral margin is thin, and 

 the suboral funnel is a basal segment of an inverted truncated 

 cone (32°) with a length of nearly 0.7 oral diameter and a 

 basal diameter of 0.67 oral diameter. The long shaft is 

 swollen near its middle to a diameter equal to that of the 

 oral diameter, and then contracts (7°) to the open aboral 

 end. There are 8 exceedingly narrow vertical fins, with 

 lengths of 0.36 total length. 



The hyaline wall is thin. 



Length, 130 to 205[X. 



Salpingella faurei is variable in proportions (length 7.6 to 

 13.4 oral diameters), in actual length, and in number of fins 

 (7 to 9). These variations are all possibly correlated with 

 temperature. 



Salpingella faurei resembles S. exilis closely, but its oral 

 rim is entire and without facets. The median expansion, 

 narrow neck, and general form recall S. laacl{^manni, but that 

 species is more elongate (15.4 oral diameters) and longer 

 (230 to 25o[.t), and has fewer (4) and shorter fins, and an 

 aboral cylinder; in habit laacl{^manni is antarctic, in contrast 

 with the strict tropical limits of faurei. 



Recorded from one station (80) in the Galapagos region, 

 in a pump sample taken at 50 meters. Frequency, minimum. 



Temperature, 26?o6; salinity, 35.95; density, 23.75; pH, 

 8.19. 



Salpingella glockentbgeri (Brandt) Jorgensen 



Salpingella glocl^cntdgcri, Kofoid and Campbell, 1929, p. 353, 

 fig. 688. 



The greatly elongated, trumpet-shaped lorica, with median 

 bulge, inverted aboral shoulder, and narrow cylinder, has a 

 length of 1 1.4 oral diameters. The oral margin has a narrow, 

 thickened, somewhat projecting brim. The suboral funnel 

 flares gracefully as an inverted basal segment of a cone (30 ) 

 with a length of nearly 0.86 oral diameter and with a diam- 

 eter of 0.51 oral diameter at the lower end. The generally 

 tubular shaft is swollen near its middle to a diameter of 0.57 

 oral diameter and is narrowed within the upper 1.5 oral 

 diameters, where it may be only 0.46. The shaft contracts 

 aborally only a little, reaching 0.4 oral diameter within the 

 aboral 2.0 oral diameters. As the shaft progresses aborally it 

 rounds off with a distinct shoulder, and there is an inverted 

 convex-conical (35°) region just above the aboral end (em- 

 bracing the posterior 0.75 oral diameter). The aboral end 

 has a very low, cufflike cylinder, the diameter of which is 

 only o.ii oral diameter. There are 8 left-turning (6 ), 

 narrow, ridgelike fins, the lengths of which are within 3.7 

 oral diameters. 



The wall is thin (about o.oi oral diameter), with just a 

 trace of suboral thickening in some loricae; it is always 

 hyaline. 



Length, 252 to 43311. 



Most loricae are over 300^ in length and relatively narrow. 



Salpingella glocI{entdgeri is like S. rotundata in having an 



