BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND. 11. N:o 16. 39 
produced backwards into a strong sharp process. Last ural 
segment as long as telson. Peduncles of uropoda shorter than 
rami. Telson broad, as long as last pair of uropoda. 
Hab. Indian Ocean. 
Gen. 5.. CALAMORHYNCHUS, H. STREETS, 1878. 
>Pelagic Amphipoda.> Proc. of the Acad: of Nat. Hist. of Philadelphia 
1878, p. 285. 
1. C, pellucidus, H. SrtrErts, 1878. 
l L. c. p. 285, pl. 2, fig. 5. 
Hab. "Tropical parts of Pacific. 
Gen. 6. RHABDONECTES, n.!) 
Diagn. Body very elongated, rodlike. Head elongated, 
with a distinct neck, and a very long, needle-shaped rostrum. 
Tibixz and carpi are linear, but periodically intumesced in the 
female. Seventh pair rudimentary. ÖOvitectrices wanting. 
Peduncles of uropoda very elongated and narrow. ”Telson 
:very long, needle-shaped. 
1. Rh. armatus, H.: MIiLnE-EDWARDS, 1840. 
Histoire naturelle des Crustacés. Tome 3:me, p. 101. 
Diaygn. Head together with the rostrum longer than the 
rest of the animal. Epimeral of first pair of pereiopoda 
rounded below. Hinder corners of epimerals of seventh pair 
rounded. First ural segment shorter than last pleonal seg- 
ment. Second pair of uropoda shorter than last ural segment. 
Last pair much longer than first. Telson much longer than 
last pair of uropoda. 
Hab. Indian Ocean, Pacific, Atlantic. N 
2. Rh. Whitei, SPENcE BaAtE, 1862. 
Catal. Amph. Crust. of the British Museum, p. 345, pl. 54, fig. 7. 
Diagn. Head together with the rostrum shorter than the rest 
of the animal. Epimeral of first pair of pereiopoda produced an- 
!) The name has been substituted for the old name Rhabdosoma, as this 
latter was already preoccupied by Dumeril for an Ophidian genus. 
