gude: on chloritis. 107 



with the type in the British Museum it was found that this form 

 presented considerable diflFerences which justified its being raised to 

 specific rank. It is less depressed in the spire, the umbilicus is 

 narrower, not obliquely excavated, and much less angulated, the 

 whorls are more tubular, the last whorl is more dilated at its 

 termination, the axis is higher in proportion to the diameter ; the 

 peristome is thinner, less expanded, not reflexed, and the hairs are 

 more distant. The most salient feature, however, is the character of 

 the raised tubercles placed in shallow depressions. The shells before 

 me can be grouped into two series in about equal proportions ; one 

 typical, ranging in size from diam. 21-5, alt. 15 mm. to 19-5 and 

 13 mm.; the other a little more depressed in the spire, the axis 

 a little shorter in relation to the diameter, and the umbilicus a little 

 wider, ranging in size from diam. 21, alt. 14 mm. to 18-5 and 12-5 mm. 



Chloritis silenus, An gas. 

 Chloritis conjimcta, Gude, ante, p. 47. 



When considering this species I thought the material at my disposal 

 justified me in separating a number of forms as a distinct species 

 under the name C. conjuncta. Messrs. Sowerby & Fulton have 

 kindly submitted a number of shells which demonstrate that the two 

 extremes are linked by intermediate forms, and the name conjuncta 

 must therefore be relegated to the synonymy of C. silenus. 



Chloritis pkaddulenta, n.sp. PL XIII, Fig. 4. 

 C. Rehsei, Gude (not of Mart.) : Proc. Malac. Soc, vol. vi (1904), p. 1 15. 



Shell moderately umbilicated, depressed globose, blackish chestnut, 

 shining ; spire conoid, apex obtuse, suture shallow. Whorls 4, sub- 

 compressed, subangulated above the periphery, dilated towards the 

 mouth, then constricted, more so below, obtusely angulated round 

 the obliquely excavated umbilicus ; finely plicate-striatc, the striae 

 arcuate and pronounced at the suture ; the first 2^ whorls covered 

 with minute, very crowded hair-points, arranged in quincunx, 

 becoming sparser on the last half of the penultimate whorl, dis- 

 appearing altogether on the last whorl, which descends shortly, but 

 deeply, in front. Aperture semi-ovate, oblique ; peristome thickened, 

 expanded and reflexed, bluish, becoming blackish at the edge, margins 

 a little convergent, evenly curved, coluraellar triangularly dilated and 

 overhanging the umbilicus. Diam. maj. 39, min. 31 mm. ; alt. 31 mm. 



Hah. — Dinawa, British New Guinea (E. A. Pratt). 



Type in my collection. 



The present shell was at first considered to be a form of C. Rehsei, 

 but careful comparison has convinced me that we have here a distinct 

 species. The axis is shorter in proportion to the diameter, the spire is 

 more depressed, the aperture is more dilated transversely, the last 

 whorl is more dilated towards the mouth, less tumid below, devoid of 

 hair-scars and spiral furrows below, tlie narrower umbilicus is sub- 

 angulated, the peristome less expanded and less reflexed, the surface 

 more plicate, and the hair scars on the earlier whorls more crowded. 

 An immature specimen of 3^ whorls in beautifully fresh condition 



VOL. YII.— .TUXE, 1906. 'S 



