203 



DESCRIPTION OF A NEW SPECIES OF OLIVA. 

 By F. G. Beidgman. 



Read \Wi November, 1908. 



OUTA BrETTINGHAMI, ll.Sp. 



Shell rather small, ovately cylindrical, yellowish, with a fine 

 reticulation of well-defined zigzag lines of a light-brown colour, the 

 reticulation upon the upper part of the body-whorl below the suture 

 being more open and the lines rather darker than those upon the rest 

 of the whorl ; spire rather conical, with a distinctly channelled suture, 

 with a papillate apex consisting of about three somewhat convex whorls 

 of a uniform light brown or dirty white colour ; the three remaining 

 spire volutions are obliquely iiattish, fulvous, with the upper acute 

 sutural margin, also that of the body-whorl, whitish, marked with 

 dark spots or short lines. Aperture rather narrow, bluish white, 

 with a deep chocolate-brown interrupted line or band or blotches 

 within the somewhat thickened labrum ; columellar callus Avith a few 

 rather well-marked plicae above that part which is reflexed over the 

 end of the body- whorl ; this portion is white, and exhibits about four 

 distinct oblique folds. Length 18, diam. 8 mm. 



Sab. — N.W. Australia (Captain Becket). 



This species is very similar in size and form to 0. faba, Marrat, but 

 is distinguishable on account of the finer reticulated markings, different 

 spire, and slightly broader aperture, which is of a darker colour. In 

 0. faha the labrum is pale within the aperture, whereas in the present 

 form it is stained with chocolate brown. The sutural channel in 

 0. faha is broader and the whorls narrower than in 0. Brettinghami. 

 ji!^amed after Mr. G. Brettingham Sowerby. Type in the British 

 Museum. 



