nil 



Thorax very large, subquadrate, widest at the base, alutaceous, sides slightly 



margined, basal margin jiroduced towards the scutellum, with the angles 



nc'iirly right angles. 

 Scutfllnm small, triangular. 

 Eh/trti moderate, rather broader and more than one-half longer than llie head and 



thorax, widest before the middle, somewhat attenuated towards the apex, 



alutaceous, sides slightly margined, ape.x obtuse, pale. 

 Legs large, robust, piceous. 

 Under parts black. 

 Differs from all other species in its broad sub(]uadrate thorax, attenuated elytra, 



and general sculpture. 

 Jlahitat, North America. 



Orthoperus aequalis. 

 O. (equidis, Sharp, Trans. l\. Dublin Soc. (2) iii. p. 128, 1885. 



L. c. ^ lin. = 0"63 mm. — Omnino ovalis, valde convexus, nitidus, distincte 

 punctatus, aterrimus ; 2^''onoto parvo, ad basim latissimo, lateribus leviter margi- 

 natis, margine basali leviter sinuata, angulis fere rectis ; eli/tris pronoto parum 

 latioribus, duplo longioribus, prope media latissimis, sat profunde punctatis, 

 interstitiis alutaceis, nitidis, lateribus leviter marginatis, apice rotundato ; pedibus 

 atque antennis liete flavis, clavis obscuris. 



//earflargc, castaneous ; ej'es large and prominent; palpi bright yellow; antennae 



bright yellow, with the club dusky. 

 Thorax small, widest at the base, sides slightly margined, basal margin faintly 



sinuated, with the angles nearly right angles. 

 Seutellum small, triangular. 

 Elytra a little broader and twice longer than the thorax, more deeply punctured, 



with the interstices alutaceous and shining, widest near the middle, sides 



slightly margined, apex rounded. 

 Abdomen with the jiygidium slightly exposed, piceous. 

 Legs moderate, bright yellow. 



Under parts piceous, head and prothorax flavescent. 



Differs from others in its oval form, quadrate thorax, and deep sculpture. 

 TInbitat, Sandwich Islands. Found in Hawaii, on Mauna Loa, by Rev, T. Blackburn. 



Orthoperus atomarius. 

 (Pitophiltis) atomarius, Heer, Faun. Helvet. i. p. 433, 1841. 



L. c. ^ lin. = 0'50-0'63 mm. — Ovatus, valde conve.\us, nitidissimus, pallida 



castaneus, baud alutaceus, leviter punctatus, interstitiis glaberrimis, nitidissimis ; 

 capite magno, late ; oculis magnis, modice prominentibus ; pnnioto magno, ad 

 basim latissimo, minute punctato, interstitiis glabris, nitidis, lateribus leviter 

 rotundatis et leviter marginatis, margine basali scutellum versus productii, angulis 

 fere rectis ; eh/tris sat angustis, capite atque pronoto fere sesqui longioribus, vix 

 latioribus, prope media latissimis, sat profunde et regulariter punctatis, interstitiis 

 glabris, nitidis, lateribus marginatis ad apices leviter attenuatis ; abdominis pygidio 

 exserto ; pedibus longis, Havis ; antennis flavis, clavis obscuris, articulo quinto sexto 

 multo majori. 



Head large and broad ; eyes large, moderately jiromineut ; antenna- yellow, with 

 the club dusky, fifth joint much larger than the sixth. 



Thorax large, broadest at the base, miinitely punctured, with the interstices very 

 smooth and shining, sides scarcely rounded and faintly margined, basal margin 

 produced towards the scutellum, with the angles almost right augles. 



