308 MR. H. ADAMS ON NEW SHELLS. [Mar. N, 



anfr. 7 , convexiusculis, ultimo § lonyltudinis vix cequante, basi 

 rotundato ; aperhira verticnli, semiovafi ; perist. recto, mnr- 

 gine columellain subverticali, superne dilatato, patente. 

 Long. .5, diain. 2 mill. 

 Hub. Matelle, Ceylon {CoU. F. Layard). 



This small species was collected b}^ Mr. Frederick Layard at Ma- 

 telle, Ceylon, and is pecnliar from being, at least so far as I know, 

 tlie only sinistral land-shell that has yet been met with in the island. 



Apicalia scitula, II. Ad. (PI. XIX. fig. 18.) 



A. testa subulata, soUdiuscula, subpe.llucida, politiisima, alba, 

 fascia suturali subdiaphana ornuta ; spi)-a atfenuata, sutvra 

 indistinct a ; anfr. 12, apicalibus 3 stilinis, deinde jjlaniusculis, 

 ultimo rotundato ; apertura subovali ; labio incrassato, tenui, 

 calloso ; labro valde sinuato, vix incrassato. 



Long. 10, diam. 3^ mill. ; ap. 3 mill, longa. 



Hab. Borneo {Coll. II. Adams). 



Colina pygm^a, H. Ad. (PL XIX. fig. 19.) 



C'. testa piipifoi'mi, tenuiuscula, flavida, strigis fulvis nonnullis 

 ornata ; spira medio infata, sursum convexo-turrita , apice oh~ 

 tusiuscida ; anfr. 7, convexiusculis, longitudinalifer nodoso- 

 plicatis et transverse leviter striatis ; plicis longitudinalibus 

 in anfractu idtimo fere obsolefis, striis transversis, ad suturas 

 moniliformihns, et fusco lineatis; anfractu ultimo |^ longitudinis 

 (cquante, contracto, et in medio subangulato ; apertura semi- 

 ovali, canali brevi recuriw ; columella obliquu, arcuata, oblique 

 striata, vix callosa ; labro valde expanso, extrorsum incrassato. 

 Long. 10, diam. 3 mill. 

 Hab. Borneo {Coll. H. Adams). 



This species is another interesting addition to the small genns 

 Colina. The species I lately described as C. gracilis I find has been 

 since described by Mr. G. B. Sowerby under the name of C. co- 

 arctata. 



Genus Parmella, II. Ad. 



Testa haliotidea, tenuissima, epidermide cornea, extra tesfam 

 producta ; spira plana, vertice laterali ; anfr. paucis, idtimo 

 maxima; apertura ampla. 



This pecnliar form is probably closely allied to Varmacella ; but 

 the shell of the latter is shown in Cuvier's figure of the typical species 

 (P. olivieri) to have a posterior, terminal and rather prominent apex. 

 It is also somewhat similar to the South American genus Peltella, 

 Beck {Gceotis, Shuttl.), but differs in being more depressed, and in 

 the horny polished epidermis with which it is furnished extending 

 widely beyond the posterior part of the margin. 



Parmella planata, II. Ad. (PI. XIX. fig. 20.) 



P. testa depressissimn, halintidiformi, tenuissima, epidermide 



