\ 



486 Dr. Cantor on the Flora and Fauna of Chusan. 



ralem ; abdomine albo-flavescenti ; alls dorsalibus, caudalibus anali- 

 busque nigris ; ventralibus albo-flavescentibus ; pectoralibus lat^ 

 nigro-marginatis. Cirrhi—. 



D. 5 ; C. 15 ; A. 80 ; P. I + 5 ; V. 14 ; Br. 5. 



Habitat. Fresh and brackish water. 



Shining olive-green or brown, with two rows of black minute dots 

 below the lateral line. The abdominal surface yellowish white. The 

 dorsal, caudal and anal fins black ; ventrals yellowish white ; pec- 

 torals the same colour, with a broad black brim. 



Apodal Malacopterygii. 

 Mursenidse. 

 ^Anguilla latirostris, Yarrell. 

 Habitat. Fresh and brackish water. 

 ^Synhranchus grammicus. S. supra flavo-rufescens, infra lineam 

 lateralem albo-flavescens, to to corpore lineis nigris inscripto. 

 X^ Habitat, Streamlets, canals, estuaries. 



Reddish yellow above the lateral line ; beneath buff, with nume- 

 rous black inscription-like lines all over the body. 



5. MOLLUSCA. 

 {Described by W. H. Benson, Esq., Bengal Civil Service.) 

 Gasteropoda. 

 Pulmonifera. Terrestria. 



Incilariaf, nov. gen. Corpus elongatum, postice attenuatum, 

 repens, undique velo marginatum. Tentacula quatuor, superioribus 

 oculiferis, inferioribus integris. Foramen commune in latere dextro, 

 non procul ab extremitate antica veli situm. 



*Incilaria bilineata. Corpore livido, velo punctis maculisque fuscis 

 conspersis ornato, lineis duabus lateralibus, nigrescentibus, unica ob- 

 scuriore mediana strigata. Long, ad poll. 1^. 



H'abitat. The earth, under roots, on trees and plants. 



*Helix ravida. Testa subglobosa, umbilicata, epidermide ohvacea, 

 anfractibus sex transverse subplicatis, ultimo ventricoso, suturis im- 

 pressis, umbilico mediocri; apertura suborbiculari elongatiuscula, 

 labio reflexo, tenui explanato, labro acuto. Axis 1*3, diam. 1*33. 



Habitat. Trees, stones, rocks, earth. 



"^Helix tapeina, Joum. Asiatic Society, vol. v. p. 352. No. 7. 



Habitat. N.E. frontier of Bengal. Kare at Chusan. 



*Helix naninoides. Testa solidiuscula, subdiscoidea, superne ra- 

 diatim tenuiter striata, infra striis laevigatis, distantibus ; spira de- 

 presso-conoide^, apice obtusato, planulato ; apertura transverse lunata, 

 labro obtuso, crasso, infra subreflexo. 



Habitat. Singapore ; scarce at Chusan. 



*Clausilia pluviatilis. Testa fusiformi pallide olivacea; spira atte- 

 nuata, crystallina, apice papillari ; anfractibus 14, medianis ventri- 

 cosioribus, omnibus leviter transverse striatis ; peristomate vald^ 



t From incile, a gutter, with reference to the gutter-like channel which 

 divides the mantle from the foot. 



