TEXTULARIIDAE 115 



Very rare everywhere but a good many specimens were obtained in all, the greater 

 number at St. WS 496. The stations are in the Bellingshausen and Scotia Seas and the 

 depths range between 534 and 261 1 m., the shallower records being as usual in the 

 Bellingshausen Sea. 



228. Textularia catenata, Cushman (Plate IV, figs. 44-47). 

 Textularia catenata, Cushman, 1910, etc., FNP, 191 1, p. 23, figs. 39, 40. 

 Textularia catenata, Cushman, 1918, etc., FAO, 1922, p. 12, pi. vi, fig. 3. 



Six stations: 384-6; WS 403, 507 a, 507 b. 



Frequent and quite typical at Sts. 384 and 385 ; typical but rare or very rare at Sts. 

 386 and WS 403. All these stations are in the deep water of the Drake Strait and Scotia 

 Sea, 3638-4773 m., and St. 386 is outside the Antarctic convergence line. 



The other two records rest on single specimens at Sts. WS 507 a, 5073 which are far 

 to the south in the Bellingshausen Sea, 572-580 m. The specimens are not typical but 

 I think they may be referred to T. catenata, though thicker and shorter than the type. 



In its somewhat coarse arenaceous construction Cushman's species is distinctive, as 

 compared with the smooth-surfaced specimens figured by Fornasini under the names 

 Sagraina affinis (F. 1883, FPS, p. 189, pi. ii, fig. 10) and Textilaria heterostoma (F. 1896, 

 TC, pi. O, figs. 6-12), but structurally there is no difference and it is questionable 

 whether Fornasini 's name should not have preference on grounds of priority. 



At St. 385 a few specimens show a tendency towards a Bigenerine formation. An 

 example is figured. 



229. Textularia tenuissima, Earland (SG 156) (Plate X, fig. 22). 



Forty-eight stations: 169, 171, 180, 181, 187, 192, 194, 196-8, 203, 204, 360, 365, 369; Por: 

 Lockroy; 62° 57' S, 60° 20' 30" W; 64° 56' S, 64°43'W; WS 199, 377, 383-5, 391, 395, 400, 471, 

 472, 479, 480, 482, 483, 485-7, 494A, 496, 497, 506, 507A, 507B, 509-15. 



Very widely distributed in all areas and at all depths. It is common at Sts. 169, 171, 



WS 384, 472 and frequent at many other stations. The megalospheric (A i) form with 



large planospire is very rare, but was observed at Sts. 198 and WS 485 in company with 



the megalospheric form A 2 and the microspheric form B. At Sts. 181 and WS 496 



both A I and A 2 forms occurred without form B. The greater number of specimens 



belong to the form A 2 with small megalosphere, but excellent microspheric forms are 



frequent, especially at Sts. 169 and 171. At some of the more southern stations, notably 



Port Lockroy and St. WS 509, an exceptionally long and slender variety occurs which is 



figured. It is so fragile in construction that the chambers collapse on drying, and as no 



perfect examples were found it is not possible to say whether they were megalospheric 



or microspheric, or to what size a perfect specimen attains. The fragment figured 



measures 0-5 mm. in length with 0-05 mm. greatest breadth. The species has recently 



been recorded as of frequent occurrence in the Bay of Whales, Ross Sea, 280 fathoms 



(W. 1934, FRS, p. 2). 



230. Textularia wiesneri, Earland (SG 155). 



Twenty-eight stations: 169, 175, 177, 190, 195, 196, 360, 363, 365, 366, 373; WS 201, 203, 386, 

 387, 389, 471, 472, 474, 480, 482-4, 494A, 507B, 509, 512, 516. 



1 5-2 



