Hutton. — On the Diptera brachycera of New Zealand. 39 



Hab. Throughout New Zealand. Not so common as 

 H. trilineatus. 



Section C. 



All the abdominal segments nearly naked, shining. No 

 tooth on the posterior tibiae. 



Helophilus ineptus. 



H. ineptus, Walker, Cat. Dipt, in Brit. Mus., p. 608 (1849) ; 

 Hutton, Cat. Dipt. N.Z., p. 41. 



Face yellow, the vertex piceous. Thorax grey, with three 

 black bands above and one on each side before the wings ; 

 silvery below. Abdomen metallic-bronze, the centre of the 

 segments with a triangular dead-black mark. 



Male. — Legs black, except the basal halves of the tibiae, 

 which are testaceous. 



Female. — Femora black ; the tibiae and tarsi testaceous, 

 except the bases of the hind tibiae. 



Length, 3 11 mm., $? 12 mm. ; wing, J 9 mm., $ 

 VI mm. 



Hab. Throughout New Zealand. 



Helophilus chathamensis, sp. nov. 



Face grey, the vertex red. Third joint of the antennae red, 

 with a black border. Thorax dark-brown ; the scutellum pale- 

 tawny, blackish towards its base. Abdomen bronzy, with 

 dead-black patches in the middle of each segment. Legs 

 black, the knees and proximal portions of the tibiae testa- 

 ceous. Length, 9-11 mm. ; wing, 8-10 mm. 



Hab. Chatham Islands (Fougere). 



My specimens have been in spirit, and the hairy covering 

 is changed in appearance, and cannot be described. 



Helophilus latifrons. 



H. latifrons, Schiner, Eeise der " Novara," Dipt., p. 359 

 (1868). Mallota latifrons, Hutton, Cat. Dipt. N.Z., p. 40. 

 H. hochstetteri, Nowicki, Mem. Krakauer Akad. Wissen., 

 ii., p. 23 (1875); Hutton, Cat. Dipt. N.Z., p. 42; Hudson, 

 Man. N.Z. Ent., pi. vii., fig. 8. 



Thorax black, with indistinct grey bands. Abdomen dark 

 steel-blue. Antennae reddish-yellow, with a black base. The 

 tip of the scutellum and a tubercle under the wings are 

 reddish-yellow. The legs are black, with the apex of the 

 middle femora and the base of the middle tibiae generally 

 reddish-yellow. Length, 9-11 mm. ; wing, 7-9 mm. 



Hab. Throughout New Zealand. Abundant. 



