FISHES FROM WESTEltX AL'STRAIJA — WAITE. 6i 



(irt'llus is present in tlie angle. The nuirgin of the anal is a 

 ratliei- broad white band within which is a dark l)n)wn one, very 

 narrow at tlie spines but increasing in depth so tliat it occupies 

 nearly the whole of the posterior vnys.. Pectoral and ventral 

 without markings. A \'erv' faint broad bai' across the caudal 

 peduncle, in line with the anal band. 



Length of specimen 119 mm. trawled in the waters between 

 Fremantle and Houtnian's Abrolhos. 



This species has affinities with C. i)iertP)tsii, Cuvier and 

 Valencieimes and the very closely allied C. dixoul, Regan : 

 differential characters are the angulate soft dorsal with its 

 contained ocellus, the sub-vertical and scarcely obli(jue body barn 

 which have a ditfeient iTiclination from those of the other species 

 mentioned, also the absence of the yellow ai'ea on the posterior 

 part of the body. Bleeker placed his C. xauthurufi as synonymou* 

 with C. mefte)i.sU, but Mr. C. T. Regan appears to regard this as- 

 distinct also.'" 



ClIELMOXOKS TKUNCATUS, KlM'r. 



Chtetodon truitcntus, Kner., Sitzb. Acad. Wiss. Wien, xxxiv., 

 ^ 1859, p. 442, pL ii. 

 Loc. — The specimen trawled between Houtmans Abrolhos and 

 Fremantle is the largest T ha\e seen, measuring 222 mm. in 

 length. 



Htpsipops microlepis, OiliitJwr. 



(Plate xii.) 



D. xii.-xiii. 15-18 ; A. ii. 13-16 ; V. i. 5 ; P. 21 ; C. 17. 



The great variation which this species undergoes during tlit> 

 course of its growth is responsible for several erroneous deter- 

 minations and additions to the synonomy. 



The changes which take place during the life of the species to 

 maturity, have been lately studied by Mi-. Allan R. McCulloch, 

 and the following notes are based upon his observations. 



In the smallest specimens examined (15 mm.), the characteristic 

 mai'kings are developing, but are not clearly defined ; the scales, 

 also are incomplete, the head and back as fai- as the dorsal fin 

 being naked. The scales do not yet appear on tlie fins, and the 

 caudal is emarginate. All the rays are simple. 



10 Eegan.— Ann. Mag^. Nat. Hist., (7), xiii., 1004, p. 277. 



