57 



The specimen from Stat. 45 measures only 77 mm., rostrum 14 mm., carapace isYa mm -i 

 abdomen 47 1 / mm., the rostrum which just reaches beyond the antennal scales and which is still 

 a little shorter than the carapace, is armed above with 7, below with 3 teeth; the 3 rd tooth 

 of the upper border stands above the orbital margin, the 6 th reaches just beyond i st antennular 

 article, while the 7 th stands immediately before the i st of the lower margin; the three teeth of 

 the latter are placed on the middle third and the apex of the 2 nd , which is slightly larger than 

 the i st or the 3 rd , is but little farther distant from that of the 3 ld as from the i st . 



The rostrum of the specimen from Stat. 175 is broken off in the middle, but there are 

 6 teeth on the upper border, that gradually increase in length and of which the 3 r<1 is placed 

 above the orbital margin. The three young specimens from Stat. 178 are the youngest of all. 

 In the hrst, long 50 mm., the rostrum (6 1 /., mm.) reaches to the last third of the antennal 

 scale and is distinctly shorter than the carapace ; the 6 teeth of the upper border reach to the 

 distal end of i st antennular article, the 3 ld is situated above the orbital margin and the three 

 following are of equal size; the 3 teeth of the lower margin are placed on the middle third. 

 In the youngest individual, in which the abdomen is wanting, the rostrum (4 1 /,, mm.) is about 

 half as long as the carapace (S 1 /* mm.) and reaches to the middle of the antennal scale; it 

 extends straight forward, though slightly turned upward and is i-dentate; the teeth of the 

 upper border are nearly equal, the foremost tooth is placed above the distal end of i st antennular 

 article, immediately behind the i st of the three teeth of the lower margin, of which the 3 rd is 

 but little farther distant from the 2 nd as the 2 nd from the i st and a little farther distant from 

 the apex of the rostrum than from the i st tooth. Of the third specimen, which is the largest 

 of the three, the rostrum is broken. 



General distribution: Arabian Sea (Alcock); Bay of Bengal (Alcock) ; Andaman 

 Sea (Alcock) ; Siberut Island (Balss) ; South of the Philippine Islands (Spence Bate) ; Japan 

 (Spence Bate, Balss); Banda Island (Spence Bate); Kermadec Islands (Spence Bate); North of 

 the Falkland Islands (Spence Bate). 



2. Acanthephyra purpurea A. M.-Edw. PI. VI, Fig. 12 — 12 c. 



Acanthephyra purpurea A. Milne-Edwards, Compt. Rend. Acad. Sciences Paris, T. XCIII, 



1881, p. 935. 

 Acanthephyra purpurea Stanley W. Kemp, "Fisheries, Ireland, Sci. Invest.", 1905, I. [1906], p. 4, 



Plates I and II, Fig. 1 — 3 (Synonymy). 

 Acanthephyra purpurea H. J. Hansen, The Danish Ingolf-Expedition, Vol. III. 2. Crustacea 



Malacostraca. I. Copenhagen, 1908, p. 75. 

 Acanthephyra purpurea Stanley W. Kemp, "Fisheries, Ireland, Sci. Invest.", 1908, I. [ 1910}, 



p. 56 — 58 and in: Transact. Linnean Soc. London. 2 nd Ser., Zoology, Vol. XVI, Pt. 1, 



1913, p. 64. 

 Acanthephyra purpurea K. Stephensen, Vidensk. Meddel. fra den Naturh. Foren. Vol. 64, 



1912, p. 64 and 329. 

 Acanthephyra purpurea O. Pesta, Zoologischer Anzeiger, Vol. XLII, 191 3, p. 70. 

 Acanthephyra purpurea H. Lenz and K. Strunck, Deutsche Südpolar-Expedition 1901 — 1903, 



Vol. XV. Zoölogie VII, Berlin 1914, p. 326. 

 Acanthephyra par-ra H. Coutière, Buil. Musée Océanogr. de Monaco, 1905, p. 15, Fig. 5. 

 Acanthephyra purpureus Th. R. R. Stebbing, South African Crustacea, Part VIII, London, 



1915 (Annals South African Museum, XV, Part II, 1915), p. 96. 



SIBOGA-EXPEDITIE XXXIX a 3 . 8 



