105 



FURTHER REMARKS ON THE GENUS CELORITIS, WITH 

 DESCRIPTIONS OF ELEVEN NEW SPECIES. 



By G. K. GuDE, F.Z.S. 



Read Qth April, 1906. 



PLATE XIII. 



Since writing my former article on the genus Chloritis {ante, 

 pp. 40-50) new material of much interest has reached me from various 

 sources. Colonel Beddome, Messrs. Sowerby & Fulton, Mr. E. A. 

 Smith, and Mr. E. E. Sykes — to whom I am much indebted — have all 

 contributed undescribed forms, and my own collection has further 

 yielded three new species. Mr. Schepman, of Rhoon, Holland, has 

 kindly sent to me for inspection a number of shells belonging to the 

 Ley den Museum. Of these I refer three, from the Xulla Islands to 

 C. macrostoma ; they vary somewhat in elevation of the spire, and the 

 i peristome is somewhat more thickened than in the type ; one of them, 

 moreover, has the umbilicus narrower, and half covered by the 

 columellar margin of the peristome, while the last whorl descends 

 a little, but is not deflexed. Another of the Leyden Museum shells 

 I refer to C. hiomphala ; it is from Taliabu Island, a new habitat for 

 the species. I have appended a list of the species of Chloritis, 

 brought up to date, adding all bibliographical references not included 

 in Pilsbry's Manual of Conchology. I have omitted from the list the 

 species named bulbulus, zodiacus, Hmvesi, and Bonthainefisis, the 

 brothers Sarasin having demonstrated that they pertain to the genus 

 Planispira. On the other hand, I have included several species placed 

 by Pilsbry in Planispira, e.g. delihrata and its allies, as these appear 

 to me to fall more naturally into the genus under consideration. 



I take this opportunity of recording my deep obligation to Mr. Smith 

 for valuable assistance in compiling the list. 



Chloritis Beddomei, n.sp. PI. XIII, Fig. 1. 

 Shell widely umbilicated, solid, depressed conoid, dark chestnut, 

 shining under a velvety deciduous cuticle, finely and distantly plicate- 

 striate, decussated with close microscopic spiral lines; spire convex, 

 apex obtuse, suture somewhat deep. Whorls 5^, increasing slowly 

 and regularly, compressed above, rounded at the peripliery, flattened 

 below, obtusely angulated round the widely excavated umbilicus ; last 

 whorl scarcely descending in front, slightly dilated towards the mouth. 

 Aperture elliptic, little oblique, margins convergent, united by 

 a flexuous thread-like ridge. Peristome a little thickened, expanded, 

 and reflexed ; upper and outer margins arcuate, basal sinuous, projecting 

 forward, columellar obliquely ascending into and impinging upon the 

 umbilicus, then curved forward and towards the body-whorl and 

 continued into the flexuous thread-like parietal ridge. Diam. maj. 

 28-5, min. 23'5 mm. ; alt. 15"5 mm. 



