382 DISCOVERY REPORTS 



at 388 and WS 245. In all of them the central carina is double, the intervening space 

 being divided into cellules by transverse bars. 



Length, 0-45 mm.; breadth, 0-28 mm.; thickness, 0-22 mm. 



244. Lagena laureata, sp.n. (Plate XI, figs. 37-40). 



Thirteen stations: 51; WS 71, 83, 86, 88, 89, 90, 92, 93, 221, 225, 248, 408. 



Test compressed, oval, increasing in width slightly towards the base. Furnished with 

 a median keel, with or without subsidiary keels. From the median point of the base, 

 costae diverge and follow the line of curvature of the edge of the shell : they are most 

 strongly marked near the edges, and more feebly in the median area, where they rarely 

 extend to more than one-third the length of the shell. The surface of the shell beyond 

 the points to which the costae extend is somewhat coarsely areolated, the strength of the 

 markings varying between coarse punctation of the shell and definite hexagonal orna- 

 ment. The proportion of surface covered by costate or punctate markings varies greatly; 

 as a rule the most strongly costate forms have otherwise the smoothest surface, whereas 

 specimens with feeble surface costation often have strongly marked hexagonal pits. The 

 whole ornamentation strongly suggests a laurel wreath encircling a "hammered" 

 plaque. 



This is one of the most typical of the Falkland species, often abundant, notably at 

 WS 83, 88. It varies greatly in size, the finest specimen, which we figure (fig. 37) from 

 WS 86, is 0-35 mm. long, and 0-33 mm. broad as compared with average dimensions 

 of about 0-20 mm. long, and o-i8 mm. broad. 



245. Lagena auriculata, Brady (Plate XI, figs. 41-46). 



Lagena auriculata, Brady, 1879, etc., RRC, 1881, p. 61 ; 1884, FC, p. 487, pi. Ix, figs. 29, 31, 33. 

 Lagena auriculata, Millett, 1898, etc., FM, 1901, p. 625, pi. xiv, fig. 15 (only). 



Eleven stations: 48, 388; WS 71, 76, 83, 88, 91, 92, 93, 221, 245. 



The best specimens at WS 83 and 93. At most of the stations the specimens are of 

 the same form as the local variety of L. olveolata, and are with difiiculty separable 

 without a close examination of the basal excavations. But at WS 83 and some other 

 stations another, and very distinctive variety occurs, in which the auricles are very widely 

 separated and tightly compressed. 



Size variable, average length about 0-25 mm.; breadth, 0-22 mm. 



246. Lagena alveolata, Brady, var. separans, Sidebottom (Plate XI, figs. 47-49). 

 Lagena alveolata var. separans, Sidebottom, 1912, etc., LSP, 1912, p. 425, pi. xxi, fig. 5. 



Seven stations: WS 83, 88, 91, 92, 93, 221, 248. 



Frequent, and very handsome specimens, especially at WS 83 and 88. The type, 

 L. alveolata, as figured by Brady, does not occur in the Falkland material. Sidebottom 's 

 specimens were from the South-west Pacific. 



Average length about 0-30 mm.; breadth, 0-28 mm.; thickness, 0-25 mm. 



