94 



Body ovate, very convex, black, not shining, thinly clothed with very short whitish 



hair. 

 Head rather large, produced in front, closely tuberculate ; eyes moderate, rather 



prominent ; antenna' rather long, pitchy black, with the ninth joint scarcely 



incrassate. 

 Thorax Bhort, transverse, scarcely longer but rather broader tban the head, widest 



before the middle, very closely fcubi rculate, with a transverse depression near 



the base, sides rounded in front and contracted towards the base, basal margin 



nearly straight. 

 ScuteUum moderate, closely asperated. 

 Elytra ovate, very convex, sligbtly inflated, more than one half longer and rather 



broader tban the head ami thorax, widest at the middle, lightly but very closely 



asperated in transverse rows, sides moderately rounded and slightly margined, 



apex attenuated, and rather paler. 

 Abdomt a not exposed. 

 Legs rather long and slender, pitchy black. 

 Under parts entirely piceous. 

 Differs from A. Boudierii in its larger size, broader and more inflated form, fainter 



sculpture, and more robust antennae. 



Habitat, North America. Found in British Columbia by Mr. G. R. Crotch. 



Actidium Sharpianum. 



A. Sharpianum, Matthews, Cist. Ent. iii. p. 39, pi. ii. fig. 2, 1882. 



L. c. ys lin. = 0(53 mm. — Elongatum, valde convexum, piceo-brunneum, pilis 

 brevibus argenteis vestitum ; capite modico, elongato, triangulari, confertim tuber- 

 culato ; oculis magnis, prominentibus, longe retropositis ; pronoto parvo, cordi- 

 formi, capite pariter longo, parum latiori, ante medium latissimo, postiee attenuato, 

 confertim tuberculato, impressione transversa, ovali, basini versus leviter notato, 

 lateribus leviter marginatis, margine basali rotundata ; elytris sat longis, capite 

 atque pronoto parum latioribus, fere duplo longioribus, prope media latissimis, 

 convexis, confertim, sat leviter, asperatis, lateribus leviter marginatis, et leviter 

 rotundatis, apice recte truncato et parum dilatato ; abdominis pygidio exserto ; 

 pedibus piceis, robustis, tibiis omnibus prope medias dilatatis ; antennis longis, 

 piceie. 



Body elongate, very convex, pitchy brown, clothed with short silvery hair. 



Head elongate, triangular, closely tuberculate ; eyes large, prominent, and placed 



far back ; antenna; long and piceous. 

 Thorax small, cordiform, not longer but rather broader than the head, widest before 



the middle, attenuated posteriorly, closely tuberculate, with a faint, oval, 



transverse impression towards the base, sides slightly margined, basal margin 



rounded. 

 ScuteUum elongate, triangular, closely asperated. 

 Elytra rather long, rather broader and nearly twice longer than the head and 



thorax, widest near the middle, convex, closely but not deeply asperated, sides 



slightly margined and slightly rounded, apex straightly truncate, and laterally 



dilated. 

 Abdomen with the pygidium exserted. 

 Legs robust, piceous, with all the tibia; dilated near the middle, and the posterior 



coxae laminated. 

 Under parts castaneous. 

 Differs from all other species in its elongate, convex form, small thorax, and 



especially in the abruptly truncate apex of its elytra. 

 Habitat, Polynesia. One specimen only, found by Mr. Blackburn, running on mud 



on the sea-shore near Honolulu in Hawaii. 



