the Arabian Sea as in the Bay of Bengal, but that are probably identical with Glyph. regalis 

 Bate. The Arabian Sea is the habitat of still four other species, one of which, Glyph. cerea 

 Alcock & Anderson, belongs to the subgenus Plastocrangon, in which the eyes are small and in 

 life of an opaque yellow-ochre colour; the three others are Glyph. priononota W.-Mas., Smitkii 

 W.-INIas., and unguiculata W.-Mas., of which the first should perhaps be regarded as a local 

 variety of Glyph. granulosis Bate. Besides Glyph. Investigatoris six species were observed in 

 the Bay of Bengal and the Andaman Sea, hrstly Glyph. caeca W.-Mas. and caecesce?is W.-Mas., 

 that both belong to Plastocrangon and of which the former was also taken on the Saya de 

 Malha Bank, furthermore Glyph. hastacauda Bate, Gilesii W.-Mas. and Smitkii W.-Mas. ; finally 

 a form obtained by the "Investigator" off the Arakan Coast, which was referred by Mac Gilchrist 

 with some doubt to Glyph. longirostris (S. I. Smith), but which is probably different. 



The nine species which are at present known to occur in the Indian Archipelago, are 

 Glyph. regalis Bate, hastacauda Bate, granulosis Bate, furthermore the new species pugnax, 

 assimilis, Siöogae and megalophtkalma, finally Glyph. caeca W.-Mas. and Faxoni de Man, that 

 both belong- to the subgenus Plastocranzon. 



It results from the preceding that nearly two-thirds of the total number of species of 

 the genus Glyphocrangon, the only one of the family, are found in the tropical seas and that 

 the geographical distribution of the greater part is rather small and limited. The only species, 

 indeed, which are widely distributed, are Glyph. rimapes Bate, already mentioned, Glyph. hasta- 

 cauda Bate that ranges from Japan through the Indian Archipelago to the Bay of Bengal, and 

 the two species from the east coast of the United States, Glyph. longirostris and sculpta, that 

 are also recorded from South Africa, while the former has even been observed off the west 

 coast of Ireland, the most northern locality where a Glyphocrangon has been taken. Of the 

 species of the subgenus Plastocrangon one, Glyph. caeca W.-Mas., is distributed from the Saya 

 de Malha Bank to New Guinea. 



■ Though all the species of Glyphocrangon are found in deep water, the depth at which 

 they occur, varies, however, rather considerably according to the species, so that the reader is 

 referred to the List of the known Species at p. 214. When this List is looked over, nearly one- 

 third prove to have been captured at great depths surpassing 1000 fathoms and the maximum 

 depth recorded appears to be that of Glyph. rimapes Bate, which was trawled near Yokohama 

 at 1875 fathoms. We learn also that some species occur at moderate, other ones at great 

 depths and that the depth generally not varies exceedingly much, when the species was found 

 at different Stations. The smallest depths at which species were taken, proved to be 142 and 

 160 fathoms respectively for Glyph. Investigatoris and Glyph. Faxoni. The species of the 

 subgenus Plastocrangon do not seem to live at constantly greater depths than those of the 

 typical genus, for, though Glyph. caeccscens was taken at 1 748 fathoms, Glyph. caeca occurs in 

 water of 300 fathoms on the Saya de Malha Bank and, as already mentioned, the new Glyph. 

 Faxoni was found in the Bali Sea at 160 fathoms. 



