78 



OCEANIC TINTINNOINA OF LAST CRUISE OF CARNEGIE 



Recorded from eleven stations, five in the Atlantic and six 

 in the Pacific, as follows: two (between stations 6 and 7) in 

 the North Sea, one (9) in the Atlantic drift, two (12, 13) in 

 the American cold-water region, two (116, 117) in the North 

 Pacific middle latitudes, three (118, 122, 123) in the East 

 Asiatic marginal sea, and one (130) in the California region. 



There are 7 pump and 13 net samples, of which 8 were 

 taken at the surface, 5 at 50 meters, and 7 at 100 meters. 

 Maximum frequency, 97 per cent at station 122; other 

 records above minimum (2 to 91 per cent) from stations 

 6-7«, 6-7Z', 9, 13, 117, 118, 122, 130; averages, 11.4 and 55.4 

 per cent in Atlantic and Pacific net samples, respectively; in 

 Atlantic pump samples, 9.8 loricae. 



Temperature: Atlantic, net samples i? 64-11? 27 (8?ii); 

 Pacific, pump samples 2?54-i8?22 (6? 97), net samples 2?54- 

 io?i8 (6?9o). Salinity: Adantic, net samples 32.68-35.14 

 (33-71); Pacific, pump samples 32.84-34.06 (33.01), net 

 samples 32.76-33.78 (33.27). Density: Atlantic, net samples 

 24.94-26.90 (26.22); Pacific, pump samples 25.58-26.45 

 (26.20), net samples 25.52-26.57 (26.05). pH: Atlantic, net 

 samples 8.08-8.10 (8.09); Pacific, pump samples 7.90-8.02 

 (8.00), net samples 7.90-8.21 (8.00). 



Parafavella hadai, new name 



Not Favella denticulata forma sitbcylindiica Schuiz and Wulff, 



1929- P- 345. fig- 2 If. 

 Parafavella subcylindrica Hada, \g12a, pp. 54-55, fig. 20. 



"Lorica short finger-shaped, 2.7 oral diameters in length; 

 oral margin denticulate with many small triangular teeth 

 (about 60); bowl subcylindrical, dilated slighdy in the sub- 

 oral 0.16 of the total length, gradually contracting aborally, 

 convex conical (8°) in the posterior 0.3 of the lorica; aboral 

 end nearly hemispherical, somewhat subacute, without an 

 aboral horn. 



"Length, 1 691.1; oral diameter 63U. 



"Differs from Parajavella digitalis Kofoid and Campbell 

 in having the denticulate oral rim, from P. hemispherica 

 (Meunier) in numerous oral teeth and in the rounded aboral 

 end, and from P. rotundata (Jorgensen) in smaller size and 

 in stouter proportions." 



Parajavella hadai occurs at only one station, off Kam- 

 chatka, recorded by Hada in 1932. 



Parajavella hadai is renamed in this report because the 

 specific name subcyVmdrica had already been applied by 

 Schuiz and Wulff to another species, which Hada apparently 

 overlooked. The specific name hadai is, thus, appropriate. 

 It was not recorded in the material of the Carnegie, although 

 many of the Japanese species have been reported again by 

 this expedition. 



Parafavella obtusangula (Ostenfeld) emended Kofoid 

 and Campbell 



Parajavella obtusangula, Kofoid and Campbell, 1929, p. 168, 



fig- 309- 

 Favella denticulata var. tenuis, Schuiz and Wulff (part), 1929, 

 p. 344, fig. 20^ (see also P. denticulata) . 



The lorica is short and bell-shaped, with an angular lower 



bowl, a pointed aboral horn, and a length of 2.8 oral diam- 

 eters. The oral margin is regularly denticulate with approxi- 

 mately 36 short, erect, wide triangular teeth. The bowl is 

 cylindrical in the upper 1.5 oral diameters, and obtusely 

 conical (46°) in the lower section, having there plane-to- 

 barely-convex sides. The aboral horn is short (0.2 oral 

 diameter) and narrow conical (8°), and has a sharp point. 



The wall is within 0.05 oral diameter in thickness uni- 

 formly at all levels, and has thin laminae which enclose a 

 single layer of radial, rectangular secondary prisms. The 

 outer surface has moderately large, rounded hexagons except 

 in the aboral horn, which is usually hyaline. 



Length, 14011. 



Schuiz and Wulff figure one lorica (fig. 20^) which be- 

 longs to this species; the others of their series do not appear 

 to be related. 



Parajavella obtusangula differs from its close relative P. 

 denticulata in the obtuse, long, conical lower bowl and 

 shorter horn. The transition between bowl and horn is also 

 less marked and the cylindrical part of the bowl is shorter. 

 It is unlike P. parumdentata, which has suboral flare and 

 much less transition between bowl and horn. 



Recorded from one station (117) in the North Pacific 

 middle latitudes, in a net sample taken at 50 meters. Fre- 

 quency, 2 per cent. 



Temperature, i2?56; salinity, 34.22; density, 25.89; pH, 

 8.06. 



Parafavella parumdentata (Brandt) Kofoid and Campbell 



(Figures 49, 54, 55) 



Parajavella parumdentata, Kofoid and Campbell, 1929, p. 168, 

 fig. 306; Hada, 1932(7, pp. 49-50, fig. 14. 



The lorica is goblet-shaped, small, with evenly contracted 

 bowl and pointed aboral end lacking a distinct horn, and is 

 1.9 to 2.1 oral diameters in length. The oral margin has 

 about 32 incurved, short, equidistant, clawlike, triangular 

 teeth (omitted in the drawings). The suboral region of the 

 bowl flares as a low, basal, inverted segment of a cone (46° 

 to 60°) with a length of within 0.17 oral diameter and with 

 a diameter at the lower end of within 0.86 oral diameter. 

 Below this throat the bowl contracts as an inverted cone 

 (5°) for about 0.5 total length and then (32° to 48°) be- 

 comes a wider cone with full sides. The aboral end is not 

 prolonged as a pedicel, being but the simple sharp end of the 

 lower bowl. 



The wall is uniformly approximately 0.05 oral diameter in 

 thickness, but its structure was indeterminate in the loricae 

 of this expedition. The outer surface has distinct, very small, 

 elongated hexagons. 



Length, 97 to 107^1. 



The Carnegie loricae are distinctly shorter and stouter than 

 those included by Kofoid and Campbell, which are 127 to 

 200|J, and 2.8 to 3.0 oral diameters. The shape of their 

 figured lorica is somewhat different, as is also that of Hada. 

 One of the loricae figured here (fig. 49) is aberrant in shape, 

 proportions, and size. 



Parajavella parumdentata, though showing considerable 



