60 ZOOLOGY OF THE VOYAGE OE H.M.S. SAMARANG. 



regionem umbilicalem carneola, apertura triangularis antice valde products et coarctata, peristomate 

 atro-purpureo, incrassato, reflexo. 



Hab. ? 



An extremely delicate and characteristic species, remarkable for the spouted angular 

 construction of the lip. 



6. Helix Typinsana. PI. XV. Fig. 3 a, b. H. testa discoidea, depressiuscula, subcarinata, late 

 et profunde umbilicata, striis obliquis, confertis, corrugatis, olivaceo-fusca, fascia pallida cingulata, spira. 

 obtusa, anfractibus septem ad octo, rotundatis, apertura rotunda, peristomate intus carneolo, margine 

 acuto, reflexo. 



Hab. Island of Ty-pin-san, Meiacoshima ; found under decayed leaves in the pine- woods. 

 The whorls of this species are coiled round a broad axis, forming a large and deep 

 umbilicus, as in H. polygyrata ; they are, however, less in number and not so depressed. 



7. Helix Brookei. PI. XV. Fig. 4 a, b. H. testa, magna, sinistrorsa, subdiscoidea, obesa, im- 

 perforata, obtusa, carinata, oblique strigillata, corneo-fusca, epidermide crassa induta, castanea, carina 

 pur])urascente, supra pallidula, basi convexa, radiatim striata, anfractibus cpaatuor ad quinque, apertura 

 obliqua, peristomate incrassato, intus casrulescente-alba. 



Hab. Mountains of Borneo. 



This fine species, which has very much the appearance of a sinistral H. Otaheitana, was 

 brought by the Borneo Dyaks to his Excellency, the Rajah Sir James Brooke, to whom we 

 have the pleasure of dedicating it. 



8. Helix Batanica. PL XV. Fig. 5 a, b. H. testa depresso-globosa, sinistrorsa, anguste per- 

 forata, albida, fasciis fusco-rubris circumdata, epidermide olivaceo-lutea induta, anfractibus quinque, 

 convexiusculis, transversim oblique striatis, ultimo rotundato, apertura transverso-lunata, peristomate 

 incrassato, subreflexo. 



Hab. Island of Batan (Bashee group), under weeds and low plants on the ground. 



A small globular reversed species, reminding one somewhat of the British H. nemoralis 

 though of more solid structure. 



9. Helix Mackensii. PI. XV. Fig. 6 a, b. Valenciennes, Voy. de la Bonite, pi. 25. f. 14. 

 Hab. Island of Ty-pin-san, Meiacosliimas. 



Several examples of this interesting species were collected at the above-named island. 

 The hairs which grow from the epidermis at the periphery of the whorls, are most conspicuous 

 in young specimens. 



10. Helix vittata. PL XV. Fig. 7 a, b, c. H. testa subdiscoidea, sinistrorsa, umbilicata, pellu- 

 cida, acute carinata, superne depressa, sutura indistincta, carneola, fasciis quatuor ad quinque fulvicantibus 



