12 Transactions. — Zoology. 



Length, 3 12-14 mm., ? 12 mm. ; wings, $ 11-13 mm., 

 $ 12 mm. 



Hob. Auckland (Colonel Bolton and Captain Broun) ; 



Great Barrier Island (Suter) ; Taranaki (Clark). 



Tabanus oplus. 



T. oplus, White, MSS. ; Walker, Cat. Dipt, in Brit. Mus., 

 part v., Supp., p. 255 (1854) ; Hutton, Cat. Dipt. N.Z., 

 p. 20; Butler, Cistula Entomologica, vol. i., p. 356 (1876). 



Head brown ; antennae with the first, second, and base of 

 the third joints brown, the tip fuscous; palpi yellow, pro- 

 boscis brown. Thorax black, with short pale hairs. Abdo- 

 men dull-red, with a dark ill-defined band down the centre, 

 which is interrupted at the porterior margin of each segment ; 

 the last four segments darker than the first three. Wings as 

 in T. imjiar, the veins brown. 



Male. — Legs dull-red, the femora blackish near their bases, 

 The abdominal dark band is broader than in the female. 



Female. — Legs dull-red, the last joints of the tarsi fuscous. 

 Thorax with reddish marks on the sides and above, behind the 

 middle ; the humeral callus is also reddish. 



Length, $ 12 mm., $ 13 mm.; wing, $ 12 mm., ? 13 mm. 



Hob. Auckland (Colonel Bolton and Captain Broun). 



Tabanus sordidus. 



T. sordidus, Walker, Cat. Dipt, in Brit. Mus., Supp., p. 256 

 (1854) ; Hutton, Cat, Dipt. N.Z., p. 20. 



Black, the thorax with three hoary stripes. Abdomen 

 tawny, with an interrupted black stripe, which is dilated at 

 the base and at the tip. Posterior tibiae tawny. Length, 

 14^ mm. 



Hab. Auckland (Colonel Bolton). 



I have not seen this species. 



Tabanus bratranchii. 



T. bratranchii, Nowicki, Mem. Krakauer Akad. Wissen., 

 band 2, ged. Aufsatzes, p. 19 (1875) ; Hutton, Cat. Dipt. 

 N.Z., p. 20. 



Head dark-grey in front, nearly white below ; antennas 

 black, the first two joints occasionally brown ; palpi tawny, 

 the proboscis brown. Thorax dark-brown, with four indistinct 

 greyish bands, sometimes reddish on the sides. Abdomen 

 dark-brown, with a triangular white spot on the centre of each 

 segment ; posterior margins of the segments and a large spot 

 on each side of the first and second segments tawny. Wings 

 nearly hyaline, the outer portion of the marginal cell darker ; 

 veins piceous. 



