324 FAUNA HAWAIIENSIS 



yellow, the coxae metallic, the hind tarsi fuscous. Metathorax rugulose, with a median 

 carina, the pleural ridge with long white hairs. Wings hyaline, the veins pale yellowish, 

 the marginal vein about twice as long as the stignial, the latter two-thirds the length of 

 the postmarginal ; tegulae piceous black. 



Hab. Lanai (3000 feet). Described from a single specimen taken by Mr Perkins 

 in January 1894. 



Subfamily III. SPHEGIGASTERINAE. 

 ToMOCERA Howard. 



1881. Tomocera Howard, Rep. U.S. Dep. Agric, 1880—81, p. 368. 

 1883. Mo7^anila Cameron, Trans. Ent. Soc. London, p. 188. 

 1885. Dilophogaster Howard, Entom. Amer., 11. p. 98. 



(i) To77ioce7'a calif ornica Howard. 



1 88 1. Tomocera calif ornica Howard, Rep. U.S. Dept. Agric, 1880 — 81, p. 368. 



$, J. — 1898. Tomocera calif ornica Dalla Torre, Cat. Hym., v. p. 216. 

 1883. Dilophogaster californica Howard, Entom. Amer., 11. p. 98. 

 1883. Moranila testaceiceps Cameron, Trans. Ent. Soc. London, p. 188. 

 1898. Moranila testaceipes Dalla Torre, Cat. Hym., v. p. 160. 



$. Average length of body, 2-1 mm. ; average wing expanse, 3'5 mm. ; greatest 

 width of fore wing, o'65 mm. Head with a delicate sculpture ; all of the thorax except 

 the scapulae with fine longitudinal punctures above ; metascutum and postscutellum 

 with a number of coarse indentations ; many stout bristles sparsely scattered over 

 dorsum of thorax. Abdomen subovate, somewhat flattened dorso-ventrally, smooth and 

 shining ; first segment very large, but the other five are plainly distinguishable. On 

 each side of the peduncle on the anterior part of the first abdominal segment is a strong 

 tuft of snow-white hairs. Wing veins strong, dark, bristly, the stigmal making a very 

 small angle with the post-marginal. Colour : head, face, scape of antennae, and the 

 under sides of all legs bright mahogany brown ; thorax black with a strong metallic 

 lustre on prothorax, tip of scutellum, and scapulae ; abdomen bluish-black with a slight 

 brownish patch beneath at base ; flagellum of antennae blackish with short dark hairs ; 

 border of the eyes at top of the head bluish ; front and middle coxae light brown, hind 

 coxae shining blue-black above, brownish below and at tip ; all femora blackish above ; 

 middle and hind tibiae blackish above, front tarsi yellowish, last joint black ; middle 

 tarsi whitish ; hind tarsi with first and fifth joints blackish, others yellowish. The 

 centre of the fore wing is occupied by a large dusky circular patch, the inner edge of 

 which is darker than the rest. 



