BY A. KAFFRAY. 151 



9. Antennarum articulis 9-10 obeonicis, erescentibus, sinipli- 

 cibus, 11 ovato, basi truncato. Metasternum mediu longitudin- 

 aliter late sed parum profunde sulcatum et utrinque convexum, 

 segmento ventrali ultimo obsoletissime biimpresso. Femoribus 

 posticis supra, basi, perparum emarginatis. Long. 1-80-2-00 mm. 



This species will be easily distinguished in the g by the shape 

 of the last three joints of the antennae and the emargination of 

 the posterior femora which make them appear abruptly con- 

 stricted between the base and the middle; such a conformation is 

 still noticeable in the £, but in a lesser degree. The develop- 

 ment of the last joints of the antenna; and of the emargination of 

 the posterior femora varies. 



From a comparison of the types, I cannot see the slightest 

 difference between R. hyalina, Schfs., and K. hyalini]>cniiis, 

 Schfs.; those two species are certainly synonymous. 



1 think the species referred by the Rev. T. Blackburn to 

 /«'. hyalina, Schfs.. (Trans. R. Soc. S. Austr. 1891, p. 79) is a 

 very different one on account of the coarse punctuation on the 

 elytra. 



K. hyalina, Schfs., seems to have a wide range in Australia; 

 I have it from Eastern Creek and Clyde River, N.S.W.; and 

 Tasmania; I received it from Mr. Masters from Gayndah, Q. ; 

 from Mr. Lea from Upper Ord River, E. Kimberley, W A.; the 

 specimens from the last locality are more developed. 



Rybaxis Isidor/E, Schaufuss. 



Nunq. Otios. iii. p. 500; Harti, Blackburn, Trans. R. Soc. S. 

 Austr. 1991, p. 78. 



Dr. Schaufuss' type is a unique specimen and a female; but the 

 insect does not seem very rare. I have both sexes from Sydney, 

 Melbourne, and Victoria. The accurate description of the Rev. 

 T. Blackburn (loc. cit.) and the peculiarity of the intermediate 

 tibiae of the £ leave no doubt as to the identity of Isidore, Schfs., 

 and Harti, Blackb. The Rev. T. Blackburn has omitted, how- 

 ever, to mention the following points : the carinules at the base 

 of the first dorsal segment of the abdomen are very short, a little 

 divergent and very approximate to each other; the dorsal stria 



