55 



As 1 7"^ species Sc. j-utiluni Darwin might be added to this list. Darwin says of this 

 species that its habitat is unknown and adds: associated with Dichelaspis orthogonia. As the 

 latter species was collected at three different Stations in the Malay Archipelago, I think it 

 probable that Sc. j'utiliiiu belongs also to the fauna of this region. H.M.S. "Siboga" collected 

 specimens of three of these species, viz. Sc. rostratujii Darwin, which was taken at four different 

 Stations and seems to be rather a common form in these seas; Sc. distinchim Hoek, taken at 

 two stations and Sc. moluccanum Hoek, which was only collected once. The other 35 species 

 have been collected in the Malay Archipelago by the "Siboga" for the first time. Two of these, 

 however, had been observed before outside that Archipelago : Sc. Peroni (Gray) was taken by 

 the "Siboga" near the Jedan Islands and was known already from the Swan River, Australia 

 and from Port Western, Bass Straits; Sc. acutuni Hoek, collected by the "Siboga" at three 

 different Stations in the Malay Archipelago, was taken by the "Challenger" in the Atlantic 

 near the Azores and in the Pacific, near the Kermadec Islands. One of the species of Scalpellum 

 collected by the "Siboga" closely resembles a species [Sc. Stearnsi Pilsbry) occurring in the 

 Japan Sea: this form is described later as a variety of Pilsbry's species. Thirty two species 

 remain which I have been obliged to consider as new species. 



The following list contains the species collected during the cruise of H. M. S. "Siboga", 

 with the places were they were collected and the number of the Station, arranged according 

 to the depth at which they occurred : 



Jedan Islands 



Bay of Bima, Sumbawa; North of Buton; . 



West of Saleyer; South of Timor 



East of Kei Islands 



North of Buton 



South-coast of Timor; Bay of Bima, Sumbawa 



Sc. Peroni (Gray) 

 Sc. rostratum Darwin 



Sc. pollicipedoides n. sp. 



Sc. aries n. sp. 



Sc. uncus n. sp. 



Sc. imbricatnin n. sp. 



Sc. diota n. sp. 



Sc. candidum n. sp. 



Sc. Stearnsi Pilsbry, 



var. robnsta n. var 

 Sc. Iiainiilus n. sp. 

 Sc. polyinorphum n. sp. 

 Sc. praeceps n. sp. 

 Sc. pellicatum n. sp. 

 Sc. fissnni n. sp. 

 Sc. proclive n. sp. 

 Sc. defornie n. sp. 

 Sc. curiosuiii n. sp. 

 Sc. crinituin n. sp. 

 Sc. incertuin n. sp. 

 Sc. cliitinosuin n. sp. 

 Sc. pociilnin n. sp. 

 Sc. javanicuui n. sp. 

 Sc. humile n. sp. 



Near Kei Islands 



Near Kei Islands 



Near Kei Islands 



Near Kei Islands; Madura-Sea .... 

 West of Makassar; Kei Islands. . . . 



Kei Islands . . • 



Kei Islands; North of Sumbawa 

 Between Halmaheira and New Guinea . 



Kei Islands; East of Borneo 



West of Halmaheira; South of Celebes . 



Near Pales Bay, Celebes 



Near Palos Bay, Celebes 



North of Sumbawa 



North of Sumbawa 



Between Kofiau and New Guinea . . 

 North of Sumbawa ; West of Aru Island 



Near Rotti, South of Timor 



North of Bali 



East of Saleyer 



55 



