82 Mr. David Sliarp on the 



as follows: -the head has the sulci a little more evident, 

 the central part therefore more distinctly elevated; the 

 thorax is longer, more cylindric, and rather more even, 

 and the elytra are longer, and the articulations of the an- 

 tennas are a little longer ; the sculpture and pubescence are 

 extremely like those of cinerascens, the former is just a 

 little coarser on the head and thorax; the structure and 

 sculpture of the hind body are extremely like those of 

 cinerascens, and the legs are also very similarly formed, 

 but the tarsi are just a little more slender. 



In the male the hind margin of the ventral plate of the 

 7th abdominal segment is truncate at the extremity and 

 obsoletely emarginate. 



150. Stenus LeiDisius,n.^^. (Sec. I. A. Er.) Niger, 

 nitidulus, albido-pubescens, palpis basi pallidis, fronte ex- 

 cavata, medio acute elevata, ])rothoracis disco impresso et 

 minus dense punctato ; elytris hoc paulo longioriljus, fortiter 

 profundeque punctatis ; abdomine crebre minus distincte 

 punctato, femoribus basi obscure fuscis. Long. 2^ lin. 



A very distinct species from any I am acquainted with. 

 Palpi with the basal joint yellow, this colour also extending 

 to the commencement of the 2nd joint. Head with large 

 convex eyes, broader than the thorax, but much narrower 

 than the elytra; the vertex considerably excavate, along the 

 centre of the excavation with a strongly elevated and well- 

 defined interstice. Thorax longer than broad, much nar- 

 roAver than the elytra, considerably narrowed behind, and 

 dilated at the sides, its greatest Avidth at, or slightly behind, 

 the middle; its punctuation is irregular, it being more 

 sparing about the disc than at the base and sides ; it has 

 near the middle an ill-defined impression. The elytra are 

 rather longer than the thorax, coarsely and deeply punc- 

 tured, the interstices shining ; they are depressed along the 

 suture ; outside this depression, near the base, somewhat 

 elevated, the punctures on this elevated part more sparing. 

 Hind body much pointed, the three carina at the bases of 

 segments 2 — 6 well marked ; it is moderately closely, but 

 not strongly, punctured, and its white pubescence is more 

 marked than that of the fi-ont parts. The legs are rather 

 long and slender, apparently black, but Avhen examined 

 found to be a little pitchy. 



On the underside the male has a notch at the extremity 

 of the 7th segment ; the 6th segment has the hind margin 



