126 



OCEANIC TINTINNOINA OF LAST CRUISE OF CARNEGIE 



lantic, net samples 8.10-8.30 (8.19); Pacific, pump samples 

 8.03-8.37 (8.26), net samples 8.16-8.34 i^-^S)- 



DATURELLA Kofoid and Campbell 

 Datiiiella Kofoid and Campljell, 1929, p. 342. 



The soft, flaccid wall of DaturcUa places the genus as 

 more specialized than Eutintinnus, although the two are 

 similar in general form. All are tropical. 



One species is described here. 



Daturella stramonium Kofoid and Campbell 



(Figure 82) < 



Daturella stramonium Kofoid and Campbell, 1929, p. 346, fig. 

 664. 



The soft-walled, almost transparent, elongated lorica, with 

 oral brim, high fins, and aboral cylinder, has a length of 4.3 

 oral diameters. The oral brim surrounds the oral opening 

 and is recurved; its diameter reaches 1.12 oral diameters. 

 Below the oral opening is a short, swollen, convex-conical 

 (66°) collar with a length of 0.3 oral diameter, and with a 

 diameter of 0.7 oral diameter at the lower end. The elon- 

 gated, conical (8°) shaft has a barely perceptible elongated 

 bulge in the upper 0.35 total length, and narrows down more 

 or less uniformly so that at the aboral end its diameter is 

 only 0.23 oral diameter. There is a short, squarish aboral 

 cylinder at the lower end, which encloses the open part. 

 There are 3 long, equidistant, rather wide fins across one 

 side of the lorica. These fins run from the upper end of the 

 aboral cylinder and onto the suboral collar. They are ver- 

 tical except near the upper end, where they are sharply de- 

 flected to the left. 



The whole lorica is flaccid, with large, faint secondary 

 hexagonal prisms. 



The animal is binucleate. 



Length, 36211. 



Daturella stramonium has few, high fins, unlike D. gaussi 

 and D. luanae, in which last there are many ridges. It has 

 fewer fins than D. datura and is much larger; its aboral 

 cylinder also marks it off from that species. The presence 

 of an oral brim suggests D. ora and D. recta, but these 

 smaller species lack suboral flaring collars and aboral cylin- 

 ders. On the whole, there is slight likelihood of confusing 

 stramonium. It may, however, be overlooked because of its 

 transparency in a crowded microfield. 



Recorded from eleven stations, four in the Atlantic and 

 seven in the Pacific, as follows: two (23, 27) in the Atlantic 

 equatorial region, two (32, 34) in the Caribbean Sea, one 

 (35) in the Pacific equatorial region, one (41) in the Gala- 

 pagos region, two (95, 160) in the region of South Pacific 

 island fields, one (147) in the California region, and two 

 (150, 151) in the North Pacific trade region. 



There are 3 pump and 14 net samples, of which 3 were 

 taken at 50 meters and 14 at 100 meters. Maximum fre- 

 quency, 4 per cent at station 160; two other records (stations 

 32, 147) were 2 per cent; average in Adantic and Pacific net 

 samples, 1.5 and 1.8 per cent, respectively. 



Temperature: Atlantic, net samples 20?99-26?04 (22?83); 

 Pacific, pump samples i4?55-28?74 (20?85), net samples 

 i4?33-28?74 (2i?25). Salinity: Adantic, net samples 36.02- 

 38.38 (37.86); Pacific, pump samples 34.63-35.35 (35.00), 

 net samples 34.42-35.68 (35.14). Density: Atlantic, net 

 samples 23.98-25.76 (24.96); Pacific, pump samples 22.43- 

 26.11 (24.40), net samples 22.43-26.06 (24.42). pH: At- 

 lantic, net samples 8.15-8.30 (8.18); Pacific, pump and net 

 samples 7.92-8.32 (8.15). 



SALPINGELLA JiJrgensen emended 

 Salpingella, Kofoid and Campbell (part), 1929, p. 349. 



As revised here, Salpingella includes only those species in 

 which there are neither facets, nor fins extending the whole 

 length of the lorica; instead, the tube is always circular in 

 cross section, and the fins are limited definitely to the aboral 

 region of the bowl. 



Salpingella is most frequent in the tropics, but a number 

 of northern species are also to be found. One or two are 

 distincdy eurythermal, for example S. acuminata. Few of 

 the species enter the Antarctic. 



Thirteen species are described here. 



Salpingella acuminata (Claparede and Lachmann) Jorgensen 

 emended Kofoid and Campbell 



(Figure 118) 



Salpingella acuminata, Kofoid and Campbell, 1929, p. 350, fig. 

 682; Hofker (part), 1931, pp. 387-388 (see also S. attcnuata). 



The lorica is thin, with widely flaring funnel and acumi- 

 nate aboral end, and with a length of 5.65 oral diameters. 

 The thin oral margin, without brim, arises from the funnel. 

 The suboral funnel is a basal segment of an inverted, trun- 

 cated, plane cone (60°) with a length of nearly 0.42 oral 

 diameter, and with a diameter of 0.5 oral diameter at the 

 lower end. The shaft is a long tube with a length of about 

 3.2 oral diameters, and aborally there is a convex cone ( 15°) 

 with a length of within 1.67 oral diameters; its open aboral 

 end has a diameter of about 0.08 oral diameter. There are 6 

 equidistant, bladelike, decurrent fins on the aboral cone, 

 arising from just above the distal end. They are slightly 

 twisted to the left, especially anteriorly. 



The uniform, thin wall hardly exceeds 0.02 oral diameter 

 in thickness, and it is always glassy. In some loricae in this 

 collection coccoliths are attached to the outside of the middle 

 of the shaft (see also Kofoid and Campbell, fig. 682). 



The animal has 2 macronuclei. The membranelles are 

 short. 



Length, 200 to 26op. 



As usual in species of wide distribution, there is much 

 variation, especially in length and proportions. 



Salpingella acuminata is easily distinguished from most 

 tropical species by the shorter, stouter lorica and more 

 gradually flaring suboral funnel. It has a more flaring 

 funnel and is longer than S. subconica. It differs from S. 

 ricta in its smooth instead of rugose surface. From S. jugosa 



