AUSTRALIAN CiOBllD^ McCULLOCH AND OGILBY. 197 



Identitij. — The species here described and figured is the commonest 

 Australian species of Perio^jhthalmiis, and has been genei'ally identified as 

 P. koelreuteri, Pallas. It appears probable, however, that several species 

 have been united under that name, the limits and variations of which do 

 not appear to have been satisfactorily' determined, so we are not sure that 

 our specimens are correctly identified with Pallas's species. They are 

 apparently referable to the variety arge>i,tilineatHs, Cuvier and Valen- 

 ciennes. 



Locs. — We have examined specimens having the same characters as 

 those described above from the following localities. Cape Bedford, 

 Queensland ; coll. C. Hedley & E. A. Briggs, August, 1916. Cooktown, 

 Queensland ; coll. McCuUoch, June, 1918. Sunday Island, King Sound, 

 North-western Australia ; coll. Dr. H. Basedow. India ; Dr. Francis 

 Day's collection. Samoa ; coll. Prof. D. S. Jordan. Bougainville Island, 

 Solomon Group ; coll. Count Morner. 



Periophthalmodon, Bleeher. 



Periophthaliiiodoii, Bleeker, Arch. Neerl. Sc. Nat., ix., 1874, p. 1326 (Guhins 

 scJdusseri, Pallas). 



This genus only differs from Feriopldhalmu» in having larger scales 

 on the head and body, and in its dentition. There are about fifty rows of 

 scales between the pectoral base and the hypural joint, and the mandibular 

 teeth are in two rows, the outer ones being canines and the inner smaller. 



Didrihnt'ioii. — Bay of Bengal to Northern Australia and the Western 

 Pacific Ocean. 



Perioi'hthalmodox barbarus, Liune. ^ 



(Plate xxxi., fig. 2.) 



Guhins barharns, Liune, Syst. Nat. (12th ed.), 1766, p. -150. Id., Bonna- 

 terre, Eucycl. Meth.,"lchth., 1788, p. 63, pi. xxxv., fig. 137. 



Gohius schlosseri, Pallas, Spicil. Zool., viii., 1770, p. 1, pi. i., figs. 1-4. 



Periophtltalinas scJdos^eri, Cuvier & Valenciennes, Hist. Nat. Poiss., xii., 

 1837, p. 192. Id., Gtinther, Brit. Mus. Cat. Fish., iii., 1861, p. 100. 

 Id., Day, Fish. India, 1876, p. 304, pi. Ixvi., fig. 4 (vide synonymy). 



PeriophtJudiitus sc/dosseri, Giinther, Challenger Rept., Zool., i., 1880, p. 33. 

 Id., Garmau, Bull. Mus. Comp. Zool., xxxix., 1903, p. 235. 



Periophthaliaus aastralis, Castelnau, Res. Fish. Aust. (Vict. Offic. Rec. 

 Philad. Exhib.), 1875, p. 22. Id., Alleyne & Macleay, Proc. Linn. 

 Soc. N.S.Wales, i., 1877, p. 334, pi. xi., tig. 3. Id., Castelnau, Proc. 

 Linn. Soc. N.S.Wales, iii., 1878, p. 48. iil., Macleay, Proc. Linn. 

 Soc. N.S.Wales, v., 1881, p. 614, and viii., 1883, p. 206. Id., Kent, 

 Proc. Roy. Soc. Qld., vi., 1889, p. 240. 



D. iv/13 ; A. 12 ; P. 16 ; V. i/5 ; C. 15. Depth 43 in the length to the 

 hypural joint ; head 3"1 in the same. Eye 6*2 in the head. First dorsal 

 spine 2"1, eleventh dorsal ray 2, tenth anal ray 3*1 in the head. 



