DESCRIPTIONS OF AUSTRALIAN ^SCHNINyE. 67 



A. guttatus, the latter being thick-set, with shorter abdomen and appendages. 

 The saffroning of the middle of the hind- wing is much more pronounced in 

 A. gihbosidiis than in A. guttatus, and the front has a distinct T-mark. In 

 the description given by Martin (' ^schnines,' p. 24) no mention is made 

 of some striking features of coloration, probably obliterated in the specimens 

 under review by him. These are : — 



A b d o m e n. — 1, yellowish above, blue on sides. 2, basal quarter similar 

 to 1, bordered basally and distally by nearly black transverse bands, of which 

 the distal one projects dorsally into an angle which enlarges over the distal 

 two-thirds of the segment to form a conspicuous black cross ; all the rest of 

 the segment bright blue, like porcelain in appearance. 3, dark brown, sides 

 of basal half bright blue ; two small green apical spots. 4-6 with pairs of 

 large green basal and apical spots. 7-10 with two large green apical spots 

 only. ^ Appendages. — Superior 6'5 mm. {A. guttatus only 5'5) with 

 narrow bases ; broad leaf-like, ridged above, ending in a sharp outer spine, 

 on the inner side of which the apical margin is distinctly hollowed out 

 (in A. guttatus this margin curves round to the interior without any con- 

 cavity). Inferior 2 mm., broad, truncate, very slightly bifid (less so than in 

 A. guttatus). $ appendages leaf-like, 5 mm. (those of A. guttatus only 

 3 mm.). In both sexes of A. gihhosulus the abdomen is more pinched at 3 

 than in A. guttatus, diVidL from thence on widens out much more gradually, 

 ending up with 9-10 5 mm. wide (10 4 mm. in ? ) ; in A. guttatus the 

 widening is more abrupt at the apical half of 3, and thence on is very 

 gradual. 



Measurements. — Total length, ^ 92, ? 90; abdomen, $ 70, 9 67; 

 liind-iving, ^ 52, ? 55 mm. [Corresponding measurements for A. guttatus 

 are :— c? 84, 62, 53, ? 80, 58, 53.] 



Anax papuensis {Burin.) Brauer. (Plate 4. fig. 8.) 



ySiJsdhna papuensis, Burm. Handb. Entom. 1839, p. 841. 

 Ana.v congener, Rambur, Hist. Nat. Nevropt. 1842, p. 191. 

 Anaa; papuensis, Brauer, 1866 (Novara, p. 63) ; Karsch, 1891 (Ent. Nachr. 

 xvii. p. 279). 



Hemianax papuensis, 8elys, Synopsis vEschn. 1883, p. 15 ; et auct. 



Dr. F. His *, following Karsch, has lately restored this species to the genus 

 Anax. This I consider justified, on the argument that the form of the male 

 inferior appendage is not a generic character, besides being variable, and not 

 at all " triangular " in many specimens. As regards the curvature of Cu^ 

 and the resultant shape of the " field " between Cui and (7%, although 

 specimens from Western Australia, S. Australia, Victoria, and N.S.W. 

 undoubtedly conform to the arrangement typical of Anax, or come very close 



* 'Die Fauna Sud-West Australiens,' 1910, p. 435. 



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