628 ON CRUSTACEA BROUGHT BY DR WILLEY FROM THE SOUTH SEAS. 



with a spiuule at about the middle of this serrulation in the penultimate joint. The 

 finger has a setule adjoining the nail on the concave margin. 



The pleopods have peduncles broader than long, their inner margins approximate, 

 connected by two pairs of coupling spiues. The outer ramus is about as long as the 

 peduncle, little longer than broad, fringed distally with nine plumose setae. The inner 

 ramus is rather longer, not broader, fringed with eight setae. 



The uropods have the rami subequal, not quite twice as long as broad, the inner 

 with si.x, the outer with four, plumose setae. The outer has also three setules at the 

 outer corner. 



The telson is triangular, the length equal to the breadth at the base, with a 

 setule near middle of each lateral margin, and an apical pair. 



Numerous specimens were obtained by Dr Willey at Lifu, Sandal Bay (near Kiki), 

 on the 17th of February, 1897, parasitic on gills of the white ocellated 4-spined sting- 

 ray, Aetiobatis narinari, attached both to the gills and to the walls of the gill- 

 chambers. There were many of the larger and a few of the smaller specimens. Dr 

 Willey says, " The swollen portion of body (mesosoma) of former was light gold and 

 black — gold prevailing in living condition — characterised also by two large lateral 

 golden orioles on each side and one anteriorly on each side of front and of mesosoma. 

 The mesosoma darkened very much in alcohol, and the gold rings and spots faded to 

 a pale gi-eenish tint. Abdomen yellowish white." He adds that the eyes were dotted 

 with gold spots, that a black longitudinal line lay immediately below the points of 

 insertion of the limbs on the mesosoma, that the whole of the dorsum was covered 

 with gold spots, usually aggregated into area-like groups, but leaving free parts of a 

 medio-dorsal black band. The large hinder gold rings included gold spots with a 

 central black one. 



The total length is or, mm., length of thickened part of mesosoma or peraeon 

 3'5 mm., and its height 2 mm. The few small specimens, though about three-quarters 

 as long as the large ones, were very much below them in total bulk. 



The specific name refers to the golden circlets of the living colour. Slight ti-aces 

 of these remain only in the small specimens. 



The seventh peraeon segment is not in this species clear of the sixth as in 

 Anceus Rhinubatis, Kossmann, from the Red Sea. Kossmann speaks of the second 

 antennae as the front, and of the first as the hinder. 



Fam. Cirolanidae. 



1880. Cirolanidae, Harger, Rep. U. S. Comm. Fisheries for 1878, pt. 6, pp. 304, 

 376. 



1890. Cirolanidae, H. J. Hansen, Vid. Selsk. Skr., Ser. 6, v. 3, pp. 27.5, 310, 

 317, 318. 



1893. Cirolanidae, Stebbing, History of Crustacea, Intemat. Sci. Ser., vol. 74, 

 pp. 341, 342. 



189-5. Cirolaiiinae, Hansen, Isop. Cumac. Stomat. Plankton-Exp., p. 12. 



1897. Cirolanidae, Sars, Crustacea of Norway, vol. 2, p. 68. 



