SERICID.E DIPLOTAXIDiE. 129 



(178) 1. * Camptorhina atracapilla. Black-cap Camptorhina. 



C. (atracapilla) glabra, subnitida, punctata, sordide brvnnea ; prothoracis disco capiteque postice, nigris ; elytria late sulcatis : 



sulcis inordinate punctatis. 

 Black-cap Camptorhina, naked, rather glossy, punctured, of a dirty mahogany colour; with the disk of the prothorax, and 



posterior part of the head, black ; elytra widely furrowed, furrows irregularly punctured. 



Length of the body b\ lines. 



Taken in Canada by Dr. Bigsby, and in Nova Scotia by Capt. Hall. 



DESCRIPTION. 



Body rather glossy, with very few hairs, grossly punctured, of a dull mahogany colour. Antenna? 

 and palpi rufous ; nose smooth, piceous ; afternose piceous, thickly punctured ; the rest of the head 

 black, less densely punctured with the vertex impunctured : limb of the prothorax mahogany- 

 coloured ; disk of the scutellum smooth : elytra with eight wide shallow furrows, irregularly punc- 

 tured ; the ridges between them impunctured, and obtuse : legs hairy or bristly, tarsi chestnut. 



Variety B. Elytra chestnut, paler at the sides. 



Family DIPLOTAXID^. Diplotaxidans. 



LXX. Genus DIPLOTAXIS. Kirb. 



Labrum transverse, lanceolate, anteriorly emarginate. 



Mandibles very short, trigonal, incurved, truncated and concavo-convex at the apex; molary space 



small, irregular, channelled ? 

 Maxillae very short, incurved, incrassated at the base ; apex armed with three short, stout, conical 



teeth. 

 Labium very short, transverse, entire, separated by a faint line from the mentum. 

 Mentum quadrangular, rather wider than long. 

 Palpi maxillary four-jointed, very minute, cylindrical ; second and third joints thicker, equal in 



length, obconical ; last thickest and longest, lanceolate-ovate, acute. 

 labial three-jointed; first joint obconical; second subcylindrical ; third nearly as long as the 



other two, but scarcely thicker, conical. 

 Antennae ten-jointed; scape elongato-obconical ; pedicel nearly spherical; third and fourth joints 



conical; fifth and sixth nearly top-shaped; seventh pateriform; 6 the three last forming a short 



ovate knob. 



c See Introd. to Ent. iv, 334, 1. 2. 



