122 



AnteniiEe extremely slender, half the length of the body. Pro- 

 notum with margin acute, incrassated beneath, except over the 

 head. Styles of male absent. Chiefly South African and Indian 

 species. 



Derocalymma contigua, Saussiire. 



Mem. Soc. Phys. de Geneve, 1873. 



Habitat. — New Guinea. 



ECTATODERUS, SftUSSUVe. 



Ann. Soc. Ent., France (6), IL, 463. 



EcTATODERUs NouMEENSis, Saussure (ibid). 

 Habitat. — New Caledonia. 



This genus and species are quoted from the Zoological Record, 

 vol. XIX., 1883. 



HETEROGAMiDyE {Bv., Syst., 350). 



" Head globose, male with ocelli, female with ocelliform spots. 

 Pronotum transverse, pilose, or ciliate. Elytra of male perfectly 

 exj)licate, anal vein angulose, impressed ; female wingless or per- 

 fectly winged ; anal area not folding fan-like, wholly reflexed. 

 Femora unarmed (or the first pair only with a few spinelets), 

 tarsi very long, those of male with arolia, of female without 

 such. Abdominal segments constricted or straight. Supra anal 

 lamina incised, or plicate and entire. Subgenital lamina of male 

 with styles. 



Only two genera of this family are recorded by Brunner. The 

 typical one, with five species, occurs in Africa and the Mediter- 

 ranean regions, and the other, Homoeogamia, exclusively in 

 Mexico, and is monotypic. No representatives were hitherto 

 known from Australia. The remarkable species from the western 

 coast of South Australia is so divergent in some characters, that 

 it not only requires a new genus for its reception, but might 

 become the type of a new family when sufiicient material be- 

 comes available. 



The following synopsis will indicate the chief distinctions : — 



5.5, Supra-anal lamina of female quadrate, and excised, or 

 broadly subtrigonal, rounded, and entire. Heterogamid^. 



6. Male winged, female wingless. 



A, Pronotum rounded in front, truncate behind. Supra-anal lamina 



quadrate, incised. Heteronamia, Burni. 



B. Pronotum sinuately rounded in front, produced and broadly 



rounded behind. Supra-anal lamina broadly subtrigonal, 

 rounded, entire. Afaxigamia, gen. nov. 



6.6. Both sexes winged. Pronotum truncate in front, rounded 

 behind. Supra-anal lamina quadrate, incised. 



HoMCEOGAMiA, Burm. 



