112 MANDIBULATA. — C0I-K01"f ERA. 



longest, all with an elevated line above: head large: thorax with an elevated 

 line on each side near the posterior angle : body depressed : elytra with the 

 tip narrowed and emarginated : wings two, ample : anterior tarsi of males 

 with three dilated joints. 



Sogines may be known from Poecilus by the more depressed form 

 of its body, its narrow labrum, obtuse striated mandibles, and by 

 the elevated carina at the hinder angle of the thorax : unlike the 

 insects of the last genus, the only species belonging to this is not 

 subject to variation of colour, at least such appears to be the fact 

 from the descriptions of authors, and the specimens which I have 

 examined. 



f Sp. 1. punctulatus. Ater, Icevis, elytris subtiliter punctato-striatis. (Long. 



corp. 6 lin.) 

 Ca. punctulatus. Illiger. — So. punctulatus. Steph. Catal. p. 23. No. 185. 



Deep dull black : head smooth, with an oblong fovea on each side between the 

 eyes : thorax slightly emarginate anteriorly, the sides rounded, the base trun- 

 cated, with obtuse angles, a little depressed above, smooth, with a very obsolete 

 dorsal line, and near the elevated thoracic keel internally, a shallow, obsolete, 

 scarcely punctate foveola : elytra rather depressed, slightly glossy, striated, the 

 strife composed of very delicate minute dots, with the interstices entirely 

 smooth, three remote larger impressions on the third from the suture, and a 

 shghtly interrupted series on the margin : body beneath and legs black : palpi 

 piceous : antennae black at the base, with the tip fuscous. 



Of this species I have seen but one indigenous specimen, which 

 is in the British Museum, and was captured by Dr. Leach, four 

 years since, in Devonshire, during the spring. 



Genus XLIV. — Omaseus, Ziegler. 



Falpi resembling those of Poecilus, but more robust : the external mamillary with 

 the second joint longer than the terminal, the latter oval and truncate; in- 

 ternal as long as the maxillae : labial with the two last joints elongate, the 

 terminal slightly attenuated, truncate : labrum transverse, slightly emarginate 

 or entire : mandibles bent, acute, denticulated at the base, sometimes striated 

 above : mentum large, with a bifid lobe in its anterior notch. Antennce cy- 

 lindric, the third joint longest: head subovate: thorax with the lateral mar- 

 gins more or less incrassated, the hinder angles sometimes acute, sometimes 

 rounded : elytra entire, rather depressed : wings two or rudimentary : anterior 

 tarsi of males with three dilated joints. 



Omaseus was originally applied by Ziegler, as a generic name, 

 to Ca. melanarius, of Illiger, but without characters ; subsequently 

 other species were placed in the genus by the continental writers, 



