104 [October, 



TWO NEW SPECIES OF CORDULIINA. 



BY ROBERT McLACHLAN, F.R.S., &c. 



IIemicordulia fidelis. 



S . Abdomen, 35 mm. Posterior- wing, 34 mm. 



Wings hyaline, the posterior very slightly tinged with yellowish in the basal 

 third : neuration black, the costal vein black externally : pterostignia black, 2 mm. ; 

 7-8 ante-cubital and 6 post-cubital nervules in anterior-wings: membranule cinereous, 

 slightly paler at base. 



Face entirely yellow (but the base of the labrum slightly olivaceous), labium 

 and its lobes yellow ; top of front, and vesicle, shining metallic-green, slightly 

 chalybeous, bordered with brownisli ; occiput black. Thorax (much crushed) 

 apparently for the most part yellowish above, but with broad median metallic-green 

 bands (probably densely clothed with cinereous pubescence) ; sides metallic-green, 

 varied with yellow (or vice versa). Abdomen nearly cylindrical, above bronzy- 

 green (scarcely metallic), segments 8 — 10 black, the 10th slightly yellowish pos- 

 teriorly : viewed laterally there is a large elongate brown spot on each segment, 

 from 2 to 7, not reaching the posterior margin of the segments, and a vestige at the 

 base of segment 8 ; beneath, the abdomen is almost wholly brownish-yellow, but 

 with a broad blackish space at the posterior end of each segment. Legs black, the 

 anterior femora wholly, and the intermediate outwardly, brownish : length of pos- 

 terior tibiffi, 6i mm. 



Appendages wholly black. Superior appendages shorter (3 mm.) than segments 

 9 and 10 combined ; viewed from above, they converge in a triangular manner 

 gradually from base to apex, slightly sinuate externally in the basal half, the apical 

 half thickened, sub-cylindrical, the apex sub-obtuse : viewed laterally, they are 

 cylindrical, curved and rather slender at the base, followed by a short hroad triangu- 

 lar tooth on the lower edge, after which they become thickened, the sub-obtuse apex 

 Blightly acuminate ; they are clothed with short black hairs. Inferior appendage 

 scarcely shorter than the superior, very elongately triangular, the apex obtuse and 

 slightly curved upward. 



$ unknown. 



Hah. : Uvea, Loyalty Islands (near New Caledonia), 1 (^ in my 

 collection. 



This would appear to be in some respects intermediate between 

 the groups of H. oceanica and H. australiw, but more probably belongs 

 to the latter group. The short triangular tootli on the lower edge of 

 the superior appendages is a good character. The condition of the 

 thorax in the type prevents exact description of the distribution of 

 the pale and metallic colours. 



Teteagoneuria canis. 



S ■ Abdomen, 34 mm. Posterior-wing, 32 mm. 



Wings hyaline, very faintly smoky : neuration black, the costal vein yellowish 

 externally ; pterostigma black, 2i mm. ; 8 ante-cubital and 7 post-cubital nervules 

 in anterior-wings. In the posterior-wings there is a small, furcate, basal, blackish- 



