4G PROCEKDINGS OF TFIE MALACOLOGICAL SOCIETY. 



round the wide, funnel-shaped umbilicus, at first ascending a little 

 above the plane of the spire, then descendins; gradually and rather 

 deeply in front ; the upper side of the last half flattened and sloping 

 towards the periphery. Aperture ovate-lunate, oblique, violaceous 

 purple inside, peristome purplish fuscous, slightly thickened, expanded 

 and reflected ; margins approaching, united by a thin callus, upper 

 ascending at first, then descending, arcuate, basal and columellar 

 margins slightly curved, the latter dilated and slightly overhanging 

 the wide umbilicus. Diam. maj. 28-5, min. 22-5 mm. ; alt. 17 mm. 



Mab.—'New Mecklenburg. 



Tj'pe in Miss Linter's collection. 



The present species is allied to C. discordiaUs, Fer. (under which 

 name it was sent out), but it differs by the less rounded whorls, the 

 higher axis, wider and funnel-shaped umbilicus, less expanded 

 peristome, relatively higher aperture, and much sparser hairs. 



I have seen three specimens besides the type, one in the British 

 Museum, one from Mr. Ponsonby, and one from Messrs. Sowerby & 

 Fulton, the last measuring diam. maj. 26-5, min. 21 mm. ; alt. 16 mm. 



Chloritis Gaimardi, Desh. 

 Helix Gaimardi, Desh. : Guerin, Mag. de Zool., 1831, pi. xxix. 



The specific limits between this species and C. silenus, Angas, were 

 for some time obscure to me, Angas having omitted to compare his 

 species with its ally. An examination of Mr. Ponsonby's rich series 

 of this group, however, has disclosed the existence of two types of 

 sculpture, one with rows of hair-scars much crowded, the other having 

 these processes much sparser. One of each type was submitted to 

 Dr. H. Fischer with a request that he would compare them with the 

 type of C. Gaimardi if it could be found in the Paris Museum, but to 

 my regret he was unsuccessful in bis quest. The only specimen 

 found bore the label " Relix .... N"e Irlande, MM. Lesson et 

 Garnot." Dr. Fischer adds that on the occasion of a visit to the 

 Museum by M. Ancey he filled in the blank with a pencil note, 

 " Gaimardi, Desh." ; but it is obvious that this specimen cannot be 

 considered as the type. Fortunately Deshayes gave enlarged figures 

 of the sculpture in the Mag. de Zool., 1831, pi. xxix, and in Ferussac's 

 " Histoire," pi. Ixxii, fig. 10, and these figures favour the view that 

 his species is characterized by the more distant rows of hair-scars, 

 while the type of C. silenus in the Newcastle Museum (which, owing 

 to the kindness of Mr. E. Leonard Gill, the curator, I have been able 

 to inspect) demonstrated the fact that in that species the hair-scars < 

 are very densely crowded. Several specimens in Mr. Ponsonby's 

 collection, however, combined the crowded hair- scars of C. silenus 

 with the contour of C. Gaimardi, and as I consider the sculpture of 

 decided diagnostic value, I have no option but to establish a new 

 species on these latter forms. C. Gaimardi may be characterized as 

 smaller (diam. 15 mm.) than C. silenus, less conoid, with the last 

 whorl more convex above, less flattened at the side, the aperture with 

 the outer margin more rounded, the basal margin less arcuate, and the 

 hair-scars distant. 



