46 



NORTHERN ZOOLOGY. 



Family STENOLOPHIDiE. Stenolophidans. 



XXI. Genus STENOLOPHUS. Zieg. 1 



(66) 1. * Stenolophus versicolor. Changeable Stenolophus. 



St. (versicolor J piceo-niger ; antennis basi, prothoracis margins latcrali, pedibusque, rufis ; clytris rufo-fuscis, sub luce violaceo 



micantibus. 

 Changeable Stenolophus, piceous-black ; base of the antenna?, lateral margin of the prothorax, and legs, rufous; elytra 



reddish-brown, in the light shining with a tint of violet. 



Length of the body 2i— 2J lines. 



Three specimens were taken in Lat. 54°. 



DESCRIPTION. 



Body dusky-black, glossy. Palpi, mouth, and scape of the antennae rufous : prothorax scarcely 

 longer than wide, rounded behind, with the basilar impressions punctured : elytra reddish-brown, 

 viewed in the sun or in the light, they exhibit a changeable tint of violet ; a punctiform impression 

 adjoins the second furrow ; apex slightly sinuated ; epipleura yellow : thighs dusky, especially the 

 posterior pair, which are larger than the others ; tibiae and tarsi rufous. 



The female has less of the violet tint, and the elytra are of a pale mahogany colour. 



Variety B. With the two first joints of the antennae rufous; legs yellow. 



j$ DlMANA. 2 



Family TRECHLDiE. Trechidans. 



XXII. Genus TRECHUS. a Clair. 



(67) 1. * Trechus tibialis. Red-shanked Trechus. 



T. (tibialis J niger, subnitidus ; palpis apice, antennis basi, tibiisquc, rvfis ; prothorace subquadrato, postice ulrinque sulculo im- 



presso ; eli/tris unifoveolatis, marginibus apicis rufescentibus. 



Bed-shanked Trechus, black, rather glossy; palpi at the apex, antenna? at the base, and tibiae, rufous ; prothorax rather 



square, with a basilar furrow on each side ; elytra with a single punctiform impression ; margins of the apex 



rufous. 



Length of the body 2J lines. 



Only a single specimen taken. 



1 M. Latreille (Crust. Arachn et Ins. i, 391) has placed this genus at a considerable distance from Trechus, though 

 he appears aware of their affinity ; but Mr. Stephens has properly inserted it between Opkonus and the latter genus. He 

 has, however, in his characters of Stenolophus omitted to notice its most striking distinction, that in the male insect the 

 penultimate joint of the four anterior tarsi is cleft to the base into two narrow lobes. In Harpalus and Ophonus this joint 

 is heart-shaped. The last joint of the palpi in the present genus, is conical though subtruncated and belongs to this tribe. 



2 Mr. Stephens (Illustr. Mandib. i, 167) says that the four anterior tarsi in Trechus are dilated in the males, which would 

 make them belong to the preceding stirps, but this is an oversight, for only the anterior pair or hands are dilated. See 

 Sturm. Deutsch. Fn. v, t. cxlix — cli. 



3 The four first joints are dilated in the hands of the males in this genus. 



