174 



TRICHOPTERYGIDAE. 



Rodwayia intercoxalis, n. sp. 

 PI. xxv., fig. 13. 



Dark castaneous, apical portion of elytra, abdomen, 

 antennae, and logs much paler. Length, '6 mm. 



Hab. — Queensland: Cairns district, from nests of ants 

 (F. P. Dodd). Type, I. 10682. 



The outlines and punctures of this species are practic- 

 ally the same as in all others of the genus, and in agreement 

 with the comments on ovata,( A > and the clothing consists of 

 very short depressed pubescence, giving the upper-surface a 

 finely sericeous appearance as on most of them ; but it is 

 darker than any other species ; the abdomen is not entirely 

 covered by the elytra, and the apical parts of the latter in 

 "consequence appear considerably paler than those parts that 

 cover the former, but the colour of the elytra, apart from 

 this, seems to gradually become paler from the base to the 

 apex. The intercoxal process of the prosternum, which at 

 first glance appears to be black, is wider than in any other 

 described species of the genus, and its front end (the sides 

 of which, however, I have been unable to see clearly on any 

 of the specimens examined under the microscope) appears 

 to be without the flange-like processes of the other species ; 

 its hind end is more obtusely notched than in any other 

 species, except ovata, and each side is finely margined. The 

 host ant is a reddish stinging species of the genus A mblyopone 

 or near thereto. 



RODWAYIA ORIENTALIS, Lea. 



I recently took this species at Glen Innes (in abundance 

 from nests of Camponotuz nigriceps and of ('. aentojnlosus), 

 Peak Hill (from nests of Camponotus novoe-hoUandiae and 

 of a small black hairy Iridomyrmex), in New South Wales; 

 and at Brisbane (from a nest of C. ae?ieopilo*i(s), Mungar 

 Junction (form a nest of Ectatomma metaUic/unJ, and Mount 

 Tambourine (from nests of E. metallic/in/ and Polyrhachi? 

 amnion), in Queensland. 



Rodwayia minuta, Lea. 

 Mr. E. L. Savage took a specimen of this species from 

 an ants' nest on Mount Lofty in April, 1917 ; this being the 

 only specimen of the genus I have seen from South Australia, 

 although it has been repeatedly searched for in nests of species 

 of Polyrhachis, Ectatomma, and Iridomyrmex, in which 

 specimens may be obtained in abundance in New South 



(4)Tas. Nat., 1907, p. 16. 



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