102 MANUAL OF THE MOLLUSCA. 
highly coloured, with a hydrophanous epidermis, the bands be- 
coming translucent when wetted; others, like the well-known 
B. perversus, represent the typical Brazilian forms. ‘To these 
islands belong most of the helicina-shaped Cyclophori (Lepto- 
pomda.) 
The fresh-water shells are numerous; above 100 were obtained 
by Mr. Cuming, including many species of Melania (54 ?), Navi- 
cella lineata, and suborbicularis, 5 species of Glaucomya, Unio 
verecundus, a Corbicula, and 11 sp. (?) of Cyrena. 
Celebes and Moluccas. From these islands we have on record, 
at present, 16 species of Helix, Nanina 19, Bulimus 38, Vitrina 
2 (viridis and flammulata, Quoy), Cyclophorus 1. In the 
fresh-water ponds and riyulets Mr. A. Adams found species of 
Melania, Assiminea, Ampullaria, and Nayicella; Auricula 
subulata and Conoyulus leucodon. Neritina sulcata was found 
on the folage of trees seyeral hundred yards from the water. 
9. JAVA. 
The Jaya group, including Floris and Timor, have been par- 
tially explored from the head-quarters of the Dutch settlement 
at Batavia. The land and fresh-water shells are nearly all 
peculiar, a few only being common to the Philippines and North 
Australia; they have been described and figured by M. Albert 
Mousson (8yo. Zurich, 1849, 22 plates). 
MT GIK: 5s. cccsssessscasees 15 Platycloster? ......... 3 Navicella .,2:c.Seaes-.e7 2 
PATINA oeesercesc cess ses. 8 Meghimatium ......... 2 _- 
Atiophanta .......... al — Unio and) 22. s.2-.2=2 
ES HIATUS <2 50e02-25-5026 10 PaiIIN Alec eeessepeeaere 1 Symphynofa......... - 
MO laRISILTA” 3 5.222550cs2005 6 AuiriGula: W.c.<c.es0sseen- 2 Alasmodon ............ 2 
Cyclophorus ............ 4 — AnOGON .c.5-ss.eeeeeerere 1 
MOMCIOLUS © \8>.. 20-2 sse 5's 2 NVI CIANIA)-oseescconssesess 5 CYTE A tscses-nenseeeereee 7 
Leptopoma ..........+- 1 Ampullaria ............ 1 Corbicula, s2ii-gisess-s<s 4 
Parmacella <.:.cccss0e6 3 NEriGND -psscessnpsee-oee 2 
10. BoRNEO. 
The land shells of this great island are almost unknown, and 
the only reason for mentioning it separately is the doubt whether 
it should be considered part of the Jayanese Province, or asso- 
ciated with the Moluccas and Philippines. 
PAG IK 53; donsesveccssceies 12 IPAM US eee seer oes ashes 1 Leptopoma .......cc0 3 
WMATA Sots cosvecrenseses 8 STICCUICA! csresecassesees 2 Cyclotis 57. :-es.seeeeeee 1 
BB UWS. 52 220020020000 1 Cyclophorus............ 2 Pterocyclus. .....ss000s5 of 
The fresh-water bivalyes are Glaucomya rostralis, Corbicula 
tumida, and Cyrena triangularis. Pholas rivicola was found 
