3o6 FAUNA HAWAIIENSIS 



Chalcis Fabricius. 

 1789. Chalcis Fabricius, Mant. Ins. i. p. 272. 



Black, strongly, umbilicately punctate. 



Length 3 to 4 mm. Tegulae, except a large brown spot at base, the apices of 

 femora, the tibiae, except a broad black band medially, and the tarsi, pale 

 yellow, the black band on the anterior tibiae not interrupted beneath, the 

 hind tibiae with a black annulus at base, the hind coxae sometimes toward 

 apex and beneath rufous; hypopygium yellowish (/) C. polynesialis. 



Length 4-5 to 5 '5 mm. Tegulae, except narrowly at base, apices of femora 

 and tibiae, and the tarsi, except the last joint, lemon-yellow, the tibiae 

 beneath more or less striped with black, the hind tibiae with a black annulus 

 at base outwardly but connected with the black colour beneath ; hypopygium 

 black ^2) C. obscurator. 



( I ) Chalcis polynesialis Cameron. 



1 88 1. Chalcis polynesialis Cameron, Trans. Ent. Soc. London, 1881, p. 561. 

 1898. Dalla Torre, Cat. Hym. v. p. 391. 



? ^. Length 2'8 to 3"i mm. "Black, covered sparsely with a longish silvery 

 pubescence. Base of scape, a line on the pronotum behind, and the scutellum more or 

 less ferruginous. Anterior legs with the trochanters, femora, and tibiae reddish yellow, 

 paler at the apex, and more or less fuscous in the middle ; hinder legs with the coxae 

 reddish, black behind ; trochanters and base of femora reddish, the rest black, save a 

 yellow spot above at the apex, which is reddish beneath ; tibiae black at the extreme 

 base ; next to this is a clear yellow ring, the centre is black, more or less reddish on 

 lower side, the apex clear yellow on outer side, the sides and lower parts reddish- 

 yellow; tarsi yellowish -testaceous, the extreme apex fuscous. Head and thorax covered 

 with shallow punctures ; those on the head and prothorax are smaller than those on 

 the middle of the mesonotum, which are again slightly smaller than those on the 

 scutellum ; lateral lobes of mesonotum with finer punctures than on the head. 

 Metanotum with larger punctures than on the scutellum. Scutellum rounded behind, 

 and with a transverse indistinct ridge on the apex. Abdomen not much longer than 

 the thorax, ovate, pointed at the apex, smooth, .shining, impunctate, almost glabrous at 

 the base, the four apical segments clothed at the sides and beneath with a longish while 

 pubescence. Wings hyaline ; tegulae yellow ; the teeth on femora are very strongly 

 developed, especially at the apex. 



" Seemingly a variable species as regards colouration. One of my specimens has 

 only the apex of the scutellum reddish ; another has it entirely of that colour, as well as 

 the apex of the mesonotum. The colour of the legs also varies." (Cameron.) 



Hab. Oahu : Honolulu (Blackburn); Waialua, Koolau range in February 

 (Perkins). — Hawaii : Hilo, in July (H. W. Henshaw). 



