Xi'cdhaui — Xcir Genera and Species of Perlidae. 109 



(•client little l)0()k, "The Xenroptera of New Zc^aland," has 

 expressed the opinion that this species has little affinity with 

 the othefs with which it has heen hitherto associated. That 

 opinion my study of its striicturt' ahundantly confirms. It 

 should constitute another peculiar antipodean genus, which I 

 herewith l)riefly characterize. 



Austroperia gen. nov. 



Type. — Peria cyrene Newman. 



Ocelli three, the median one minute; palpi short, with thickened ter- 

 minal joint; mandible with a well developed internal molar surface and 

 strong end teeth ; tarsi with middle joint very short, but with the first 

 joint more than half as long as the third (as in Eiunlheida) . 



Subcosta conjoined with radius beyond the crossvein of the stigma ; 

 crossveins in the apical costal area few, in the subapical, more numerous ; 

 radial sector 2-3 bianched beyond the crossvein at the stigma. Tlie 

 median vein in the fore wing is very much curved, exaggerating in its 

 middle portion the basal curvature of the radial sector; and the branches 

 of vein Cuj are attached upon its anterior side; crossveins regular. 



Among some interesting Perlidae sent me hy Mr. S. I. 

 Kiiwana from the collection of Baron Takachico of Hikosan, 

 Buzen, island of Kiushiu, Japan, were nearly all the described 

 Japanese species, and the three following new ones : 



PerIa tennina sp. nov. 



Length of body, 15 mm.; to wing tips, 20 mm.; antenna, 10 mm.; ex- 

 panse of wings, 34 mm. 



Color blackish l^rown, marked witli dull yellow. Head hardly wider 

 than the i)rothorax, the three ocelli minute, distant ; disc blackish, with 

 a triradiate mark starting forward from the hind margin, the median ray 

 dilated and truncated anteriorly, the lateral rays slender, extending just 

 outside the lateral ocelli ; antennae and palpi wholly blackish. 



Prothorax slightly wider than long, its fore and hind margins slightly 

 convex, its sides straight and parallel, and its angles all right angles. A 

 broad and uniform band of clear yellow lies upon the middle of the disc, 

 which is otherwise wholly blackish brown with shining embossed mark- 

 ings at the sides of the yellow band. Metathorax with narrower median 

 line, and with blotches on the wing bases. 



The wings are smoky brown with blackish veins except on the costal 

 margin where they are paler. Legs blackish brown beyond the base; all 

 femora and tibiae are paler on the inner side beyond the basal fifth of 

 each, and the tibiae are laterally sulcata. 



