SYKES : NEW FORMS OF CATALUS. 



'/ 



DESCRIPTIONS OF THE NEW FORMS. 



Cataulus smithi, n. sp. 



(Fig. I.) 



Shell ik'eply rimate, solid, straw-yellow, the protoconch a tritle darker, 

 ]jyraniidal, with the spire well raised ; the earlier whorls smooth, and the 

 residue sculptured by numerous, closely set, line longitudinal costulae ; 

 suture well impressed; whorls 8, plano-convex, the last being a little compressed 

 in front ; umbilical region large, sculptured as the rest of the shell ; the 

 umbilical carina is large and distinct, with a second smaller one within ; lip 

 white, continuous, sub-circular, slightly projecting at the base, reflected, 

 most noticeably so at the lower outer margin, canal large. 



Alt. 26.5 ; diam. max. (of end whorl) 10.5 millim. 



As compared with C. aurpu;< the present shell is straw-yellow and not 

 golden-yellow in colour ; it is much larger with flatter whorls, the mouth is 

 sub-circular and lacks the angle at the upper right-hand margin, &:c. From 

 C. austeidanus the shape and colour of the mouth and lip, as also the elongate 

 form, will suffice to sever it : similar vaaiations distinguish it from the 

 white-lipped var. of 0. haemasfoma. I would lay stress on the second carina 

 at the base. 



The name is given as a trifling recognition of the a.'^sistance that 

 Mr. Edgar Smith has always so readily given me on any difficult point. 



Fig. 



1. i 2. 



-Caiau.'its stiui/ii, n,sp. X ij^ Fig 4.— C ataiilus prestont, v.. sp. X ij^. 



Cataulus prestoni, n. sp. 



(Fig. 2.) 



Shell nearly related to C aureus, but differing in the following characters. 

 Colour straw-yellow rather than golden-yellow ; size smaller ; whorls not so 

 inflated ; umbilical region more rounded ; lip not so produced at the base, 

 not so much reflected, and not so ' winged ' at the upper right margin ; canal 

 smaller. 



Alt. 20.8 ; diam. max. (of last whorl) 8 millim. 



Dedicated to Mr. Preston, in acknowledgment of his courtesy in 

 placing at my disposal all the specimens of Cataulus he acquired of 

 Hugh Nevill's. 



