78 MR JAMES RITCHIE : SUPPLEMENTARY REPORT ON 



Measurements : 



Stem internodes, length .... U'29-0'35 mm. 



breadth . 013-0-16 



Hydroclade internodes, length . . . 0'25-0'29 



Hydrotheca, depth . . . . . 0-14 



,, vertical diameter at margin . . 0'13-(M4 ,, 



,, horizontal ,, . . 0'18 ,, 



Locality. Station 81, Abrohlos Bank, Brazil. Lat. 18 14' S., long. 37 58' W. 

 Fathoms, 36. Bottom deposit, coral. 20th December 1902. 



Distribution. The only record given by NUTTING is from the Caribbean Sea near the 

 Isthmus of Panama (lat. 9 32' N., long. 79 55' W. 36 fathoms). The present 

 locality, also a shallow water one, is off the coast of Brazil near Porto Alegre a consider- 

 able southwards extension of the known range. 



LITERATURE. 



Mere mention is here made of the memoirs alluded to in this paper. For their titles reference must be 

 made to such bibliographies as that in HARTLAUB'S "Die Hydroiden der magalhaenischen Region und chilen- 

 ischen Kiiste" (below 1905), or those in NUTTING'S "Monographs of the American Hydroids." 



ALUBB, J., 1857. Trans. Tyneside Naturalists' Field Club, vol. iii. pp. 93-160. 

 ALLMAN, J. G., 1864. Ann. Mag. Nat. Hist. (3), vol. xiii. pp. 345-380. 



,. 1871. A Monograph of the Gymnoblastic or Tubularian Hydroids, London, Ray Society. 



,, 1877. Mem. Mus. Comp. Zool. Harvard, vol. v., No. 2. 



,, 1885. Jour. Linn. Soc. London, Zool., vol. xix., pp. 132-161. 



,, 1888. Report Scientific Results, " Challenger," Zoo/., vol. xxiii. 



BALK, W. M., 1894. Proc. Roy. Soc. Victoria, vol. vi. 

 BETHNCOURT, A., 1899. "Deuxieme liste des Hydraires du Pas-de-Calais," Miscell. Biolog., Trav. Soc. Zool., 



Wimereux, vol. vii. pp. 1-13. 



BONNEVIE, K., 1899. Den Norske Nordhavs Expedition, 1876-1878, No. 26. Christiania. 

 BILLARD, A., 1906, (1). Ades Soc. Linn, de Bordeaux, vol. Ixi. pp. 69-76. 



1906, (2). Expedition Antarctique Francaise, 1903-1905, "Hydroiides." Paris, 1906. 

 1907. Expeditions scientifiques du " Traoailleur" et du " Talisman," tome viii. 



BRUCE, W. S., 1894. "Antarctic Birds" in Knowledge, Sept. 1, 1894, pp. 208-210. 

 BUSK, GEO., 1850. Rep. Brit. Assoc. Ada. Sc., 20 Meet. (London, 1851), pp. 118-120. 

 CLARKE, S. F., 1879. Bull. Mus. Comp. Zool. Harvard, vol. v., No. 10, p. 239. 

 ELLIS, J., 1755. An Essay toward a Natural History of the Corallines, etc. London, 1755. 

 FEWKBS, J. W., 1881. Bull. Mus. Comp. Zool. Harvard, vol. viii., No. 7, p. 127. 

 HARTLAUB, C., 1900. "Revision der Sertularella-Arten," Abh. naturw. Ver. Hamburg, vol. xvi. pp. 1-143. 



1901. Zool. Jahr., vol. xiv., Syst., pp. 349-379. 

 1904. Resnltatsdu voyage du S.Y. " Belt/ica," Zool., "Hydroiden." Anvers, 1904. 



1905. " Fauna Chilensis "Supplement vi., Zool. Jahr., 1905. 

 HICKSON, S. J., and GRAVELY, F. H., 1907. " Hydroid Zoophytes, National Antarctic Expedition," Natural 



History, vol. iii. 

 HINCKS, T., 1861. Ann. Mag. Nat. Hist., ser. iii. vol. viii. p. 251. 



1868. A History of the British Hydroid Zoophytes. London, 1868. 



JADERHOLM, E., 1903. Arkivfor zool., utg. af Kyi. Svenska Vetenskapsakad., Bd. i., pp. 259-312. 



(ROY. soc. EDIN. TRANS., VOL. XLVII., 100.) 



