370 



the Fabrician genera Lamia and Saperda : in the latter the peculiar 

 structure of the inesotibise is less apparent. 



Genus. — Pterolophia, Newman. 



This genus, if so it may be called, differs from Mesosa in a few tri- 

 vial characters, which have been already incorporated with the speci- 

 fic description of Mesosa? bigibbera (Entomol. 323), and therefore a 

 second Latin description does not appear requisite : the species bi- 

 gibbera may be considered as the type of the genus. The antennae 

 are distant at the base, generally obviously shorter than the body, and 

 11-jointed; the 1st and 3rd joints are longest and of nearly equal 

 length, the 4th is rather shorter, and the rest rapidly decrease to the 

 extremity ; the head is rather long, the mandibles strong, curved and 

 rather conspicuous : the prothorax is rather wider than the head, its 

 fore and hind margins quite straight, its lateral margins and back con- 

 vex ; it is quite unarmed : the elytra are wider than the prothorax, 

 very ample, convex, and obsoletely truncate at the apex ; on each is 

 a little dorsal elevation, near the base, and situated about half way 

 between the suture and shoulder: this elevation is sometimes scarcely 

 apparent : the legs are short ; the femora scarcely incrassated, and the 

 hirsuties and notch of the mesotibiae little conspicuous. The genus 

 appears to be rich in species, which are of small size. 



105. (Pterolophia) vitticollis. Fusca ; prothoracis vittae Slatae, nigrse. 



(Corp. long. '55 unc. lat. "2 unc.) 

 The antennae are broken, the portion remaining is fuscous, with the 

 exception of the fom'th joint, which, excepting at its tip, is cinereous; 

 the face is lanuginous and hoary : the prothorax is strongly punctured, 

 fuscous, with two broad, black, longitudinal stripes, the margins of 

 which are cinereous : the basal portion of the elytra is strongly and 

 deeply punctured ; below the middle are two short elevated carinas, 

 neither of which extends to the tip, the exterior of these is rather the 

 longest, the suture is also elevated and prettily speckled ; the basal 

 crest on each elytron is conspicuous, and placed on a line continuous 

 with the interior carina : the general colour of the elytra is fuscous, 

 with paler lines and other markings. 



106. (Pterolophia) digesta. Fusca; capitis, prothoracis elytrorumque 



basis vitta communis lata pallida, elytrorum fascia lata mediana 

 pallida vittae conjuncta ; quoque macula pallida utriusque ova- 

 ta, fere suturalis fere apicalis. (Corp. long. '4 unc. lat ."15 unc.) 

 The antennae are fuscous with the 4th joint paler : the general co- 

 lour is dark fuscous approaching to black, the head, prothorax, and 



