150 Transactimis. — Zoology. 



Greatest depth goes 5J times into the total length. The 

 length of the head goes b\ times into the total. The maxil- 

 lary reaches to below the front of the eye. The dorsal fin is- 

 low and the rays are feeble ; it commences above the base of 

 the pectoral. 



The scales are minute, and form a sheath along the basal 

 half of the vertical fins. 



Colour, dark-brown, without any spots. 



Total length, 34 in. ; length of the dorsal fin, about 20 in. 

 or 21 in. ; of the anal, 11 in. 



Art. XI. — Revision of the New Zealand Members of the 



Genus Phorocera. 



By Captain F. W. Hutton, F.R.S. 



[Read before the Philosophical Institute of Canterbury, 4th November, 



1903.'] 



In the New Zealand species of the genus the macrochaetae are 

 generally as follows : Vertical bristles, one pair on each side, 

 slightly diverging. Ocellar bristles present. Fronto-orbital in 

 two rows, the inner 6, the outer 3, stronger. Lower fronto- 

 orbital also 4, descending to about the middle of the eye. 

 Facial bristles on the lower two-thirds of the ridges ; a strong 

 vibrissa near the mouth. Humeral bristles, 3; post-humeral, 

 2. Dorso-humeral, four rows on each side. Scutellar bristles 

 few, about 6 on each side, pointing backwards. Meso-pleural 

 in a vertical band, the posterior not strong. Ptero-pleural, 2 ; 

 sterno-plcural, 1, very strong. The first, second, and third 

 abdominal segments are without discal bristles in the female. 

 The second segment has two marginals near the centre. The 

 third segment has several ; and the fourth has both discal and 

 marginal bristles. 



P. atrox. 



The sides of the face are yellowish-white ; the antennal 

 groove is pure-white. 



P. perniciosa. 



The sides of tlie face are greyish-white, with a brown spot; 

 the antennal groove is white. 



P. nyctemeriana and P, feredayi. 



I have no more information about these species. 



