BY ARTHUR WHITE. 89 



of head, first joint twice the lengtli of second, which is excep- 

 tionally short, third Hagelliforrn, about six times the length of 

 first and second together, composed of eight, closely united seg- 

 ments, the last narrowed, and rather styliform in appearance. 

 Thorax narrower anteriorly than posteriorly, with small shoulder- 

 tubercles; scutellum with two, small spines. Abdomen distinctly 

 longer than broad, rounded posteriorly. Wings with four, pos- 

 terior veins, which all arise from the discai cell; cubital vein 

 forked, and running directly from the discai cell to the costal 

 margin, the anterior cross-vein being apparently wanting. 



This genus is proposed for the species described by Macquart 

 under the name of Odontornyiafiavipalpis. It somewhat resem- 

 bles Odontomyia in general appearance, but, as shown by the 

 venation, it belongs to the Clitellm-iiue, and not to the Stratio- 

 niyiiKe. It is further distinguished from Odontomyia by the 

 antennae, which have the third joint composed of eight, instead 

 of five,or six, segments. It does not seem to resemble any of 

 the described genera of the Clitellarincf. 



Ophiodksma flavipalpis Macq. (Fig. 7). 



Syn., Odontomyia flainpalpis Macq. 



Face, front, and antennas black, front with a protuberance 

 midway between vertex and antennae. Thorax and scutellum 

 deep black, with very short, scattered, depressed, yellowish 

 pubescence; scutellar spines small, brown. Abdomen blue-black, 

 minutely punctate. Legs with femora and tibiae black, tarsi 

 white, with tips darkened. Wings hyaline, with anterior veins 

 and stigma dark brown. Length, 5, 5-6 mm. 



Hah. — New South Wales and Victoria. 



This species is easily recognised by its general, black coloura- 

 tion, with white tarsi. It seems to occur fairly commonly both 

 in New South Wales and Victoria. 



Subfamily STRATIOM YIN.^. 



In this subfamily, four, posterior veins are present, the first, 

 second, and third arising from the discai cell, the fourth dis- 

 tinctly separated from it, and arising from the second, basal cell. 



7 



