398 Mr. Bennett on a new Species of Buccinum. 



attached to the integuments which cover the origin of the abdo- 

 men aboye. 



In the Libellula;, the depressor muscles of the wings are 

 attached like the levators, below to the sternal portion of the 

 chest, and not to internal transverse septa : these latter pieces 

 nevertheless exist, but their office is partly changed ; they are in 

 these insects rejected to the outside, and form an integral part of 

 the integuments of the wing-bearing trunk, which they contribute 

 to dilate. 



Art. XLVII. Description of an hitherto unpublished 

 Species of Buccinum., recently discovered at Cork. By 

 E. T. Bennett, F.L.S. and Member of the Zoological 

 Club of the Linnean Society. 



Buccinum Humphreysianum, testa ovato-conica, tenuiuscula trans- 

 versim creberrime striata, sordide carnea; ultimo anfractu zonis 

 tribus duplicatis, brunneis, albo sparsim maculatis, superiore 

 subobsoleta ; columella laevi ; labri margine subreflexo. 

 Shell ovate-conical, thin, horn-coloured, with numerous trans- 

 verse stria; ; the last whorle with three double bands, (the upper 

 one nearly obsolete,) which are brown, ii regularly spotted with 

 white; columella smooth; margin of the labrum slightly re- 

 flected. 



Description. Whorles eight, convex, finely and closely striated 

 in a transverse direction ; striae slightly waved, and crossed by 

 very minute longitudinal lines. Bands on the lower whorle six, 

 narrow, disposed in pairs, brown, irregularly spotted with white, 

 gradually disappearing on the upper ones. Columella smooth, 

 white ; aperture horn-coloured ; lip white, slightly thickened 

 and reflected at the margin. Canal very short, with a slight tinge 

 of violet behind it. 



Length 2 inches ; breadth 1 inch. 

 Inhabits the harbour of Cork. 



