LAGENINAE 369 



193. Lagena isabella, d'Orbigny. 



Oolina isabella, d'Orbigny, 1839, FAM, p. 20, pi. v, figs. 7, 8. (O. isabelleana on plate and in 



index.) 



Lagena isabella, Reuss, 1862, FFL, p. 330, pi. iv, figs. 55, 56. 



One station : WS 408. 



It occurs probably at many other stations. The specimens have more numerous costae 

 than in d'Orbigny's figure. It is an intermediate form between L. sulcata and L. costata, 

 of no zoological value ; and we merely record it because it was originally described by 

 d'Orbigny from the Falkland Islands. The Paris Type tube contains seven specimens 

 of no dominant character, the costae ranging in number from 8 to 10, giving us inter- 

 mediate forms between L. costata and L. sulcata. 



194. Lagena raricosta (d'Orbigny). 



Oolina raricosta, d'Orbigny, 1839, FAM, p. 20, pi. v, figs. 10, 11. 

 One station: WS 408. 



A single specimen, longer than d'Orbigny's figure suggests, but it agrees in the number 

 of costae. D'Orbigny's name has no specific value, his species represents merely an 

 intermediate variety like L. isabella. The Type of L. raricosta is missing. 



195. Lagena costata (Williamson) (Plate X, figs. 19-24). 



Efitosolenia costata, Williamson, 1858, RFGB, p. 9, pi. i, fig. 18. 



Lagena costata, Reuss, 1862, FFL, p. 329, pi. iv, fig. 54. 



Lagena costata, Balkwill and Wright, 1885, DIS, p. 338, pi. xiv, figs. 3-5. 



Twenty-two stations: 51, 23s, 236, 388; WS 71, 83, 86,88,89,90,91,92,93,97,210, 213, 217, 

 221, 225, 245, 248, 408. 



One of the most abundant Lagenae of the area, very variable, practically every varia- 

 tion in the number and strength of the costae being observed, and it would be possible 

 to split up the specimens into a number of so-called species. It is best and most 

 abundant at WS 83, 86. 



196. Lagena acuticosta, Reuss. 



Lagena acuticosta, Reuss, 1862, FFL, p. 331, pi. v, fig. 63. 



Lagena acuticosta, Brady, 1884, FC, p. 464, pi. Ivii, figs. 31, 32; pi. Iviii, figs. 20, 21. 



Seventeen stations: 48, 2j6, 388; WS 71, 80, 83, 84, 86, 87, 88, 91, 92, 93, 95, 97, 225, 248. 



Large and very handsome specimens occur, especially at 48, WS 87, 88, 248. They all 

 belong to the "collared" type figured by Brady (fig. 31) except at WS 91 and 225, 

 where a few typical specimens also occurred. 



196 A. Lagena squamoso-sulcata, Heron-Allen and Earland. 



Lagena melo (intermediate variety), Brady, Parker and Jones, 1888, AB, p. 237, pi. xliv, fig. 25. 

 Lagena squamoso sulcata, Heron-Allen and Earland, 1922, TN, p. 151, pi. v, figs. 15, 19. 



One station: 388. 



A single good specimen. 



