153 



Differs from other species in its small size, orbicular form, impunctate and very 

 shining surface, deep black colour, and peculiar form of the joints of the 

 antenna and tarsi. 



ffabitat, Central America. Found near the river Belize by M. Blancaneaux. 



Corylophodes marginicollis. 



C'orijloplim marginicollis, Le Conte, Proc. Ac. Nat. Sci. Philad. vi. p. 143, 1852. 



L. c. -^Q lin. = l mm. — Late ovalis, convesissimus et nitidissimus, elytris pro- 

 funde punctatis, aterrimus, margine anteriori pronoti late albo-pellucida ; pronoto 

 sat parvo, antice circulariter rotundato, minute et indistincte punctato, interstitiis 

 glabris, uitidissimis, linea basali conspicua, margine anteriori late refiexu et late 

 albo-pellucida, interne rufescenti, margine basali profunde sinuata et scutellum 

 versus longe producta, angulis sat obtusis ; vbjtris pronoto sat latioribus et duplo 

 longioribus, prope media latissimis, punctis latis sat confertim impressis, inter- 

 stitiis glabris, nitidis, stria sutixrali sat profunda, lateribus marginatis, apice sat 

 acuto ; pedibus atque autennis valde robustis, bete flavis. 



Body broadly oval, very convex and very shining, elytra deeply punctured, deep 

 black, with the anterior margin of the thorax broadly pellucid white. 



Head piceous ; eyes rather small ; antenufe very robust, bright yellow, with the 

 eighth joint nearly as large as the seventh. 



Thorax rather small, circularly rounded in front, minutely and indistinctly punc- 

 tured, with the interstices smooth and very shining, basal line very distinct, 

 anterior margin broadly reliexed and broadly pellucid white, with a rufous 

 tinge on the inner edge, basal margin deeply sinuated, much produced towards 

 the scutellum, with the angles rather obtuse. 



Scutelluiii small, triangular, and punctured. 



Elytra rather broader and twice longer than the thorax, widest near the middle, 

 rather closely marked with broad punctures, with the interstices smooth and 

 shining, sutural stria rather deep, sides margined, apex rather acute. 



Legs very robust, bright yellow, with the tibiiie much dilated and spinose towards 

 the apex. 



Under parts piceous, metasternum very smooth and shining, first ventral segment 

 strongly tuberculate in the middle. 



Differs frorn others in its oval form, great convexity, deeply sculptured elytra, 

 robust and bright yellow legs and antennae, dilatation of the tibiae, and peculiar 

 sculpture of the first ventral segment. 



Habitat, North America. 



Corylophodes ater, sp. n. 



L. c. j^lin. = l'r2 mm. — Ovate-hemisphericus, fere glaber, nitidissimus, ater- 

 rimus, pronoto antice flavesceuti ; pronoto modico, antice fere circulariter rotundato, 

 indistincte punctato, interstitiis glabris, uitidissimis, lineii basali profunda, margine 

 basali sat profunde sinuata, angulis acutis ; elytris pronoto latioribus et sesqui 

 longioribus, ante media latissimis, postice parum acuminatis, indistiuctissime 

 punctatis, stria suturali distinctsi, sutura rufescenti ; pedibus In-evibus, Isete tlavis ; 

 antennis flavis, clavis piceis, articulo nono maguo, triangulari. 



Body ovately hemispheric, almost smooth, and very shining, deep black, with the 



front of the thorax flavescent. 

 Head moderate, piceous ; eyes large and prominent ; antennae moderate, yellow, 



with the club piceous, ninth joint much enlarged and triangular. 

 Thorax moderate, almost circularly rounded, and flavescent in front, indistinctly 



