. Bulletin of the British Museum (Natural History) Zoology. DEEP SEA PROTOBRANCHIA 157 W/L 5o- 3oJ 80- H/L 7o 60-, PL/TL 5o ⢠* « ⢠« â¢Â»Â« ⢠. .. % ⢠⢠⢠⢠⢠⢠⢠⢠⢠â¢â¢â¢ ⢠⢠«â¢â¢â¢ â¢Â« ⢠⢠⢠â¢â¢ ⢠â¢* ⢠â¢â¢â¢ â¢â¢ ⢠⢠⢠⢠â¢â¢ «\ ⢠⢠⢠. â¢â¢â ⢠..»* â¢â¢Â» ⢠⢠«â¢â¢â¢Â» ⢠⢠⢠⢠Length mm Fig. 61 Ledella acuminata: Analysis of change in shape with growth as shown by the ratios posterior umbo length/total length (PL/TL), height/ length (H/L), width/length (W/L) plotted against length for specimens from Station 211. N = 83. Length mm. Type locality
. Bulletin of the British Museum (Natural History) Zoology. DEEP SEA PROTOBRANCHIA 157 W/L 5o- 3oJ 80- H/L 7o 60-, PL/TL 5o ⢠* « ⢠« â¢Â»Â« ⢠. .. % ⢠⢠⢠⢠⢠⢠⢠⢠⢠â¢â¢â¢ ⢠⢠«â¢â¢â¢ â¢Â« ⢠⢠⢠â¢â¢ ⢠â¢* ⢠â¢â¢â¢ â¢â¢ ⢠⢠⢠⢠â¢â¢ «\ ⢠⢠⢠. â¢â¢â ⢠..»* â¢â¢Â» ⢠⢠«â¢â¢â¢Â» ⢠⢠⢠⢠Length mm Fig. 61 Ledella acuminata: Analysis of change in shape with growth as shown by the ratios posterior umbo length/total length (PL/TL), height/ length (H/L), width/length (W/L) plotted against length for specimens from Station 211. N = 83. Length mm. Type locality. Challenger Sta. 5, 24°'N., 24°'W, 5011 m, Southwest of the Canary Islands. Synonymy. Leda ultima Smith, 1885. Exp. Chall. 13, p. 324. Figured (no number) on p. 324. Ledella messanensis Verrill & Bush, 1897. Am. J. Sci. 54, Fig. 13, 18 (non Leda messanensis Seguenza MS, in Jeffreys, 1870). Nuculana ultima (Smith): Clarke, 1961 Bull. Mus. Zool. Harv. 125, p. 375. Ledella crassa Knudsen, 1970. Galathea Rep. 11: pp. 30- 32, Fig. 12, 13, pi. 3. Fig. 1. Ledella bushae Waren, 1978. Sarsia 63, p. 213, Figs. 8 & 9. Ledella bushae Waren: Waren, 1981. Bull. Zool. Norn. 38, p. 134-37. This is the most common species of Ledella present in the Fig. 62 Ledella acuminata: Histogram of specimens from Station 211, identified as immature (solid record) and maturing (open record) males and females as recorded through the transluscent shell. Atlantic and it has a widespread distribution. There are multiple descriptions of the species under different names. Our extremely large collections show that L. ultima (Smith) from the Canaries (named L. crassa by Knudsen (1970)), from the north west Atlantic (named L. messanensis by Verrill & Bush (1897, 1898)), and L. bushae (named by Waren (1978) and later confirmed as type species following W
Size: 2625px × 952px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcollection, bookpublisherlondonbutterworths
