56 AUSTRALIAN STRATIOMYIID.E, 



The abdomen is shorter and more compact than in 

 the typical form, and is illustrated on PI. VIII., fig. 7, 

 which figure was drawn from the holotype var. 



Length never exceeding 8 mm., and averaging 7A mm. 



Odontomyia carinifacies, var. grandimaculata, var. nor. 

 PL VIIL, fig. 6. 



Statu*. — A male of average size, but remarkably dif- 

 ferent in colour and spots on the abdomen, taken in abund- 

 ance with the typical females, is here given a special form 

 name. It is possible that this variety represents a distinct 

 species, but without a female of the variety or a male of 

 the typical form it is net advisable to separate them. 



Description. — The abdomen and scutellum are illus- 

 trated on PI. VIII. , fig. 6 ; the abdomen is black with large 

 reddish confluent or almost confluent side-spots which are 

 generally confluent on the extreme lateral edges. In other 

 resrrjeots the variety is similar to the typical form, but the 

 legs may be black or reddish, or may contain both these 

 colours. 



Length. — 8-10 mm. 



If ah. — Tasmania : Bream Creek, February, 1918, 36 

 specimens; Garden Island Creek, December, 1916, 1 speci- 

 men ; Lymington, December, 1916, 3 specimens. 



South Australiai : Two specimens in the Macleay 

 Museum are labelled from this State and conform to the 

 variety. 



Note. — Four stray specimens were taken at Lymington 

 and Garden Island Creek, and later specimens were met 

 with in large quantities at Bream Creek, where large series 

 of the male variety and of the female typical form were 

 taken. A second visit was made to Bream Creek for the 

 purpose of securing a pair in copula and thus definitely 

 ascertaining the sex relationship, but unfortunately the 

 weather turned cloudy and the object of the trip was not 

 attained, but a second and longer series of the two forms 

 was taken. 



Odontomyia sydneyensis, Schiner. 

 Odontomyia sydneyensis, Schiner, Nov. Reise, Dipt., 1868, 



p.' 60. ' 



? Odontomyia later imaculata, 9 White, Proc. Roy. Soc. 



Tasm., 1914, p. 58. ? Id., White, P.L.S. N.S.W., 



xli.. 1916, p. 94. 



Synonymy. — 0. later imaculata, Macquart (as identified 



by White), has been taken in copula on several occasions 



