BY ARTHUR WHITE. 56- 



that I know of is one in the collection of the Melbourne 

 Museum, 



Subfamily StpatiomyinaB. 



9. Odontomyia, Meig. 



(Exochostoma, Macq. Opseogymnus, 0- Costa. 



PselUdotus, Rond. Eulalia, Kert.) 



All the known Austi-alian species of the subfamily 

 Stratiomyinoi belong to the genus Odontomyia, althoui,fh some 

 of these were originally described as species of Siratiomys.. 

 They are fair-sized, robust species, black and green, or black 

 and yellow in colour, and never metallic. The abdomen of 

 the male is broad, parallel-sided, and almost rectangular, that 

 of the female ovate. 



Face conspicuously pubescent. Eyes either bare or hairy, 

 practically touching in the male, but widely separated in the 

 female. Antennae with the the two basal joints almost 

 equally long, or, at the utmost, the basal joint twice as long 

 as the second (in this respect differing from Stratiomys, which 

 has the basal joint three or four times as long as the second); 

 third joint elongate, with from four to sis anuulatious, of 

 which the last two may form a terminal style. Thorax 

 broad ; scutellum with two subapical spines. Abdomen with- 

 five obvious segments in the male, and six or seven in the 

 female. Legs simple. Wings with the anterior veins much 

 crowded ; cubital vein usually forked, but occasionally 

 simple ; one or two of the veinlets from the discal cell 

 frequently abortive, and, as a rule, none reach the wing 

 margin. 



Of this genus six species have so far been recorded from 

 Tasmania, but one of these, 0. rufifacies, I am unable to dis- 

 tinguish. An additional species is now added, which is 

 apparently the 0. later emaculata of Macquart, described by 

 him from " New Holland." 



Table of the Tasmanian Species of Odontomyia. 



1. Abdomen violet black. Scutellata, Macq. 

 Abdomen black, with yellow or green side margins. 2 



2. Scutellum fulvous. Carinata, Macq. 

 Scutellum (except the tip) black. 3 



3. Abdomen with broad green border ; large species. 



Amyris, Walk. 

 Abdomen with narrow green border ; very small species. 



Marginella, Macq. 

 Abdomen black, with yellow or green side-spots. 4 



