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



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

 busque nigris ; ventralibus albo-fiavescentibus ; pectoralibus late 

 nigro-marginatis. Cirrhi ^ . 



D. 5 ; C. 15 ; A. 80 ; P. 1 + 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. 

 Muraenidse. 

 *Anguilla latirostris, Yarrell. 

 Habitat. Fresh and brackish water. 



*Synbranchus grammicus. S. supra flavo-rufescens, infra lineam 

 lateralem albo-flavescens, toto corpore lineis nigris inscripto. 

 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 IV. H. Benson, Esq., Bengal Civil Service.) 

 Gasteropoda. 

 Pulmonifera. Terrestria. 

 Incilaria f , 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. \\. 



Habitat. The earth, under roots, on trees and plants. 



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

 anfractibus sex transverse subplicatis, ultimo ventricoso, suturis im- 

 pressis, umbilico mediocri; apertura suborbiculari eiongatiuscula, 

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



Habitat. Trees, stones, rocks, earth. 



* Helix tapeina, Journ. Asiatic Society, vol. v. p. 352. No. 7. 

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



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

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

 presso-conoidea, apice obtusato, planulato ; apertura transverse lunata, 

 labro obtuso, crasso, infra subreflexo. 



Habitat. Singapore ; scarce at Chusan. 



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

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

 cosioribus, omnibus Jeviter transverse striatis ; peristomate valde 



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

 divides the mantle from the foot. 



