242 FAUX A HAWAIIENSIS 



along the middle. The fourth tarsal joint seen from beneath is only a little emarginate. 

 The female has three setae on each side of the extremity of the abdomen. 



This species may be very easily confounded with those examples of Atelothrus 

 transiens that are most brightly coloured ; but independently of the entire absence of any 

 pits for the reception of setae on the thorax, this part is shorter and broader, and the 

 elytra are polished, without the dulness arising from the minute sculpture of A. transiens. 

 The yellow margin of the body is always broader than it is in A. transiens. The two 

 species have not been found in company. 



A good series of about 65 specimens was obtained. 



Hab. Kauai; at an elevation of about 4000 ft. Waimea, May and June 1S94; 

 Koholuamano, April and October 1S95 ; and on the high plateau in August, September 

 and October 1896 (Perkins). 



Division 2. Lateral margin of elytra but little curved in at the shoulders, the 

 basal margin much extended laterally and with sharply marked angle. 

 Thorax with a straight base received on the base of the elytra. 



(25) Metronieniis /atifrons sp. nov. 



Robustus, piceus, parum nitidus, antennis pedibusque sordide testaceis ; capite lato ; 

 prothorace transverso, angulis posterioribus recti!;. Long. 7 mm. 



Antennae moderately long and stout. Thorax distinctly broader than long, base 

 straight, sides straight behind, a little narrowed in front so that the base is distinctly 

 broader than the apex. Elytra dull, the groove at the outer margin near the shoulders 

 strongly developed, and its red colour striking. The striae are rather deep behind. 

 Fourth joint of hind tarsus longer than broad, not bilobed. 



The small series of nine specimens exhibits a good deal of variation in the width 

 of the thorax. They were nearly all found as single specimens on different occasions. 



Hab. Molokai. Mountains, 4000 — 5000 ft. (Perkins). 



Nos. 1254, 1256, Prof. Thaxter for Laboulbeniaceae. 



(26) Metromen7is ca/at/ioidcs sp. nov. 



Ruio-piceus, nitidus, antennis pedibusque flavis ; capite angusto ; prothorace basin 

 versus latiore : elytris minus profunde striatis. Long. 7 mm. 



One ot the most distinct species of the genus ; with a narrow head and a thora.x 

 considerably wider at the base than in front ; the species it most resembles is Mesothriscns 

 »ncrops. Antennae rather slender. Head long and narrow, eyes but little convex. 

 Thorax becoming broader from apex to base, the sides slightly curvate, behind much 

 elevated, hind angles rectangular. .Sides of the elytra somewhat widely explanate. 

 Tarsi slender, fourth joint long. One male specimen. 



Hab. Kauai. "Hal. 4000ft. 5, '95" (Perkins). I have no doubt this label 

 refers to Halemanu in Kauai. 



