On B niter flies from JVeio Guinea and Tenimher. G21 



colouriiio'-niiitter and lia3inof^lobiri derivative (respiratory 

 piomeiit) than the deep-water forms. As in Actinia the 

 lipocliroine-screon presumably acts as an optical sensitiser. 



(2) A distinctive new haemoglobin derivative occurs in a 

 certain lavender-tinted deep-water colour-variety of TeaHa 

 crass icornis. 



aB C 



Oxyhaemog/ob//?, 



B/ae p/g/77e/?t fro/?7 

 Tentac/es of Tea //'a. 



Eeferences. 



Blanchard. 1882. Bull, de la Soc. Zool. France, vol. vii. pp. 402- 



404. 

 Cunningham. 1890. Jour. M. B. A. vol. i. pp. 205-210. 

 Elmhirst and Sharpe. 1920. * Biochemical Journal/ vol. xiv. No. 1, 



pp. 48-57. 

 Fleure and Walton. 1907. Zool. Anzeiger, Bd. xxxi. pp. 212-220. 

 Gemmill. 1920. Proc. Zool. Soc. London, pp. 453-457. 

 GossE. 1860. * British Sea Anemones.' 

 JoiiNTSTON. 1847. ' A History of the British Zoophytes.' 

 Lankester. 1873. Q. J. M. S. vol. xiii. pp. 139-142. 

 INrKENDRicK. 1881. J. Anat. & Phys. vol. xv. pp. 261-2G4. 

 McMunn. 1885. Phil. Trans, ii. p. 641. 

 Newbigin. 1901. * Life by the Sea-shore.' 



LXXI. — On some Butterflies from Neio Guinea a^id Te- 

 nimher. By the Rev. G. Hulstaert, M.S.C. (Heverlee, 

 Louvain). 



Two new races of butterflies are described in the following 

 pages, and a note is added on a form described in a former 

 paper. 



The types of the new races are in our collection at 

 Heverlee. 



Pieridae. 



Delias argenthona halli, Hulst. 



Under this name I described, in the Ann. & Mag. Nat. 

 Hist. (9) xi. p. 180 (1923), as a ? form a specimen in our 



