BY CHARLES P. ALEXANDER. 93 



The female sex has not been described and one of 

 these specimens is made the allotype. 



Allotype. — Female, length 7.3-7.5 mm. ; wing, 

 ^.3 mm. 



Very similar to the male, differing as follows : — 



The flagellar segments are more oval, becoming more 

 elongated toward the end of the organ. Legs \\ith the 

 coxae yellow, the bases brown ; trochanters dull yellowish 

 "brown ; femora yellow with a narrow pale brown ring 

 T)efore the tip ; tibise dull yellow, the tips narrowly but 

 conspicuously dark brown ; first and second tarsal segments 

 brownish j'ellow, the tips narrowly dark brown ; last three 

 tarsal segments dark bro^^^l ; claws with a large tooth near 

 midlength and a series of smaller denticles nearer the base. 

 Abdomen, brown, the pleural membrane still darker brown. 

 Ovipositor wath the tergal valves slender, only slightly 

 upcurved ; sternal valves compressed, almost straight. 



Allotype, $, Meringa, near Cairns, 1918 (J. F. Illing- 

 worth). Taken at light. 



Genus Rhipidia Meigen. 

 1818, Rhipidia Meigen, Systematische Beschreibung, vol. 

 1, p. 153. 



Rhipidia pulchra de Meijere. 

 1904, Rhipidia pulchra de Meijere, Bijdragen tot de 

 Dierkunde, vol. 17, p. 92, pi. 8, fig. 7. 



One female taken at light, Meringa, near Cairns, 1918, 

 J. F. Illingworth. 



Genus Libnotes Wesfivood. 

 1876, Libnotes Westwood, Transactions of the Entomo- 

 logical Society of London, 1876, p. 505. 



Libnotes parvistigma, sp.n. 

 Belongs to the familiaris group ; antennae pale ; head 

 dark ; pronotum and mesonotal prsescutum pale brownish 

 yellow with a broad dark brown median stripe ; femora 

 with a narrow dark brown subterminal ring ; wings sub- 

 hyaline, the stigma small, dark brown, Sc very long, the 

 basal deflection of Cui near mid-length of the long cell 

 1st M2. 



