136 FAUNA HAWAIIENSIS 



(6) Orthotylus azalais, sp. nov. 



Plate V. fig. 26. 



Pale fulvotestaceous ; eyes, a solid triangle on the basal half of the pronotum in the 

 middle, scutellum (except posteriorly), clavus in part, corium interiorly, a large round 

 spot at base of cuneus, basal segment of antennae and entire ventral surface, black. 

 Vertex and pronotum sparingly streaked with sanguineous. Legs pallid, posterior 

 femora dark. Vertex one-half wider than one eye. Other proportions as in O. daphne. 



Hab. Kauai. I have seen 10 examples from Makaweli, 2000 ft. (June) ; Waimea 

 Mts., 3000 ft. (June). There are also a number of perplexingly variable forms of this 

 difficult genus which I have not yet satisfactorily separated. 



KoANOA gen. nov. 



Recognised by the dark metallic appearance and by the slender, short rostrum. 



Head short, strongly declivous, much longer than high, genae low ; second segment 

 of rostrum a little thicker at apex than at base, third a little longer than second, apex of 

 fourth reaching to base of mesosternum. Eyes touching pronotum. Posterior coxae 

 somewhat long, apically contiguous, not very remote from lateral margins of abdomen, 

 posterior femora scarcely incrassate, extending as far as, or a little beyond, apex of 

 abdomen. Elytra extending far beyond apex of abdomen. Cuneus declivous, fracture 

 very deep. Elytra [$) scarcely rounded laterally ; (?) laterally distinctly rounded. 

 Abdomen much slenderer than thorax, at least in the $. 



( I ) Koanoa haivaiiensis, sp. nov. 



Pitchy black, or greenish-black, shining above and beneath ; sterna and intermediate 

 and posterior coxae more dilute. Pronotum, scutellum and elytra thickly clothed with 

 easily divested pallid hair. Antennae (excluding first segment), legs, rostrum, fusco- 

 testaceous ; posterior femora more or less banded with blackish-brown medianly. 

 Membrane dark fumate. Antennae somewhat pilose, second segment nearly three 

 times as long as the first, two-thirds longer than third, and a little more than twice as 

 long as fourth. Pronotum truncate at the base, which is scarcely twice as broad as the 

 length of the second segment of antennae, lateral margins almost straight. Third 

 segment of posterior tarsi longer than either first or second. 



t- Vertex slightly narrower than one eye ; second segment of antennae as stout as 

 the first, much stouter than the third. 



$. Vertex slightly narrower than the two eyes together ; second segment of 

 antennae much thinner than the first, scarcely thicker than the third or fourth. 



