64 Transactions. — Zoology. 



Key to the Species. 



Abdomen metallic-blue. 



Abdomen with silvery reflections on the sides . . C. erythrocephala. 

 Abdomen without silvery reflections. 

 Eyes hairy. 



Palpi fulvous . . . . . . C. quadrimaculata. 



Palpi black . . . . .. C. hortona. 



Eyes bare. 



Third joint of antennae black . . C. icela. 



Third joint of antennae orat ge . . C. antennatis. 



Abdomen fulvous, with golden reflections. . . . C. Icemica. 



Calliphora erythrocephala. 



Musca erythrocephala, Meigen, Z\v., v., 62, 2 (1826). M. 

 vomitoria, Hudson, Trans. N.Z. Inst., vol xxii,, p. 187. 



Eves bare ; vertex black, face and epistome reddish- 

 brown ; antennae piceous, red at the tip of the second and 

 base of the third joints. Chin with black hairs. Thorax 

 with four black stripes. Abdomen blue, with shining white 

 tomentum forming large spots on each side. Length, 

 9-11 mm. ; wing, 7-9 mm. 



Hab. Throughout New Zealand. Introduced. 



This insect was first noticed in New Zealand by Mr. 

 G. V. Hudson in June, 1889, at Wellington. In Cb.ristcb.urch 

 I observed it first in the summer of 1893-94. It is now 

 abundant from Dunedin to Whangarei. 



Up to the present time the introduction of this species 

 does not appear to have affected to any appreciable extent 

 the two native species (C. quadrimaculata and C. icela), with 

 which, no doubt, it competes. All three are equally common. 



Calliphora quadrimaculata. 



Musca quadrimaculata, Swederus, Nya Handling, viii., p. 289, 

 No. 49 (1787). Call, dasyophthalma, Macquart, Dipt. 

 Exot., part v., p. 287, pi. 16, fig. 2 (1843). Miisca violacea, 

 Walker, Insecta Saundersiana, Dipt., p. 335 (1856), not of 

 Macquart. G. quadrimaculata, Hudson, Man. N.Z. Ent., 

 p. 60, pi. vii., fig. 9. 



Head piceous, a fulvous spot on each cheek between the 

 base of the antennae and the eye, below which is a narrow 

 pale band. Antennae piceous, the second joint fulvous at the 

 tip, and the third joint whitish at the base. Eyes hairy. 

 Palpi fulvous. Thorax with an oval orange spot on each side 

 in front, and a smaller one at the base of the wing. Abdomen 

 brilliant violet-blue ; legs black. Wings with a golden spot at 

 the base. Length, 12-13 mm. 



Hab. Throughout New Zealand, and in the Aucklaud 

 Islands. 



The eyes in the male are contiguous. 



