LAGENINAE 365 



inasmuch as each of the dehcate needles of the " pile " terminates in a triradial extension, 

 over which, perhaps, an outer "skin" of shell substance was formed in life, the 

 triradial terminations of the spines serving as its support (Plate X, fig. 7). The "pile" 

 of needles is, of course, very fragile, but there is a complete range of specimens, 

 from undamaged individuals to those on which only a few needles are left projecting 

 (Plate X, fig. 8) from what would otherwise be normal L. hispida as figured by Brady 

 [lit supra) (fig. 2). Length, o-40-o-5o mm. Breadth of spinous specimen, 0-30 mm. 

 Length of spines, about 0-02 mm. 



182. Lagena aspera, Reuss. 



Lagena aspera, Reuss, 1861, FKM, p. 30^^, pi. i, fig. 5. 

 Lagena aspera, Brady, 1884, FC, p. 457, pi. Ivii, figs. 7-10. 



Five stations: WS 88, 89, 90, 92, 99. 



Rarely more than a single specimen, except at WS 89 and 99, where good specimens 

 were found. They are all of a pronounced globular type without a produced neck. At 

 WS 99, a specimen with the upper half smooth, suggesting the Lagena balaniformis, 

 Heron-Allen and Earland of the Moorabool deposits (H.-A. & E. 1924, FQM, p. 147, 

 pi. ix, figs. 30, 31) but with a greater proportion of the shell rough. 



183. Lagena lineata (WiUiamson). 



Entosolenia lineata, Williamson, 1848, BSGL, p. 18, pi. ii, fig. 18; 1858, RFGB, p. 9, pi. i, 



fig- 17- 



Lagena lineata, Balkwill and Wright, 1885, DIS, p. 336, pi. xiv, figs. 13, 14. 



Thirteen stations: WS 77, 83, 87, 88, 89, 90, 91, 92, 93, 99, 221, 225, 248. 



Sometimes fairly common, the best at WS 88, 90 and 93. There is the usual range of 

 variation in the coarseness of the markings, which vary from striae practically irresolvable 

 under low magnifications to quite distinct costal lines. A complete range was observed 

 at WS 93 ; at WS 92 all the specimens were coarsely, and at WS 88 all were feebly 

 marked. 



184. Lagena caudata (d'Orbigny) (Plate X, fig. 9). 



Oolina caudata, d'Orbigny, 1839, FAiNI, p. 19, pi. v, fig. 6. 

 Lagena caudata, Reuss, 1862, FFL, p. 325, pi. iii, fig. 29. 



Sixteen stations: 228; WS 76, 79, 80, 83, 89, 90, 91, 92, 93, 95, 98, 217, 221, 225, 408. 



This little form which d'Orbigny described from the Falkland Islands as "pretty 

 rare" occurs at a good many stations, often in considerable numbers. It appears to be 

 a true local variation, for we cannot recall having seen it elsewhere, and the records are 

 few and doubtful. At the same time it has probably no zoological value, for even in the 

 Falkland area it is quite easy to obtain transition forms linking it with L. gracilis and 

 L. distorna. But for the Falkland area, L. caudata remains a fitting name for those 

 striate, or fully sulcate Lagenae characterized by a rapid diminution of the aboral end to 

 a more or less produced spine or tube. The best specimens at WS 83 and 217. Length 



