208 Description of Hemphillia, 



XVI. — Description of Hemj)hillia, a New Genus of Ter- 

 restrial Mollusks. 



BY THOMAS BLAND AND W. G. BINNEY. 



Read October 7, 1872. 



nr e iiB i> li 1 1 1 i St . 



Animal limaciforme, parvum, antice obtusum, postice attenuatum. Pal- 

 lium subcentrale, magnum, ovatum, antice valde productum, marginibus 

 liberis. Discus gressorius distiuctus nullus. Poi'us mucosus transversus 

 in apice pedis, processu couiforme valido protectus. Apertura respiratoria 

 ad dextram, in medio marginis inferioris pallii, genitalis ad basin tenta- 

 culi dextri oculigeri. 



Testa externa, unguiformis, subquadrata, replicatura pallii margiuorum 

 breviter inclusa. 



Maxilla et lamina lingualis ut in Arione constituta, dentes centrales 

 tricuspidata;, laterales bicuspidatai, marginales quadratEe, bicuspidatse, 

 papillis interuis valde productis, externis subobsoletis. 



Animal limaciform, small, blunt in front, tapering behind. 

 Mantle subcentral, large, oval, greatly produced in front, 

 free around its margin and slightly reflected over the edges 

 of the shell. No distinct locomotive disk to foot. Lines 

 of furrows run near and parallel to edge of foot, rising above 

 the extremity and apparently uniting over a transverse, 

 mucus slit, overhanging which is a greatly produced horn- 

 shaped process. Respiratory orifice at right edge of mantle, 

 near its centre. Generative orifice at right side of neck, 

 near right eye peduncle (Plate ix, figs. 1 and 3). 



Shell external, its edges imbedded lightly in the mantle, 

 very thin, unguiform, almost as large as the mantle (in spec- 

 imens preserved in alcohol) (Plate ix, fig. 5). 



Jaw wide, low, slightly arcuate ; ends blunt, but little 

 attenuated ; anterior surface with numerous ribs clenticulating 

 either margin. 



Lino-ual membrane as usual in the Helicidm. Teeth in 

 Hempliillia glandulosa about 23-1-23. Centrals and laterals 

 long, the former tricuspid, the latter bicuspid; marginals 



