20 " ENDEAVOUR SCIENTIFIC RESULTS. 



Family CALOMETRIDiE. 

 Genus Oreometea, A. H. Clark. 

 Oreometra pericalles,! sf. nov. 

 (Plate III., fig. 1.) 

 Disk wanting ; centrodorsal 6 mm. in diameter. Cirri all 

 missing, but cirrus-sockets 17, their ventral portion well on to 

 the radials ; centrodorsal slightly convex, smooth. IBr 1 

 and 2 (the axillary) united by syzygy ; radials in contact 

 laterally, but IBr 1 and 2 clearly separated from the adjoin- 

 ing series ; each of these segments is about three times as wide 

 as high and 2 has a low, obtuse distal angle ; there is a 

 cylindrical, blunt, spine-like tubercle (sometimes a pair) on 

 the proximal margin of 1 and another on the distal margin, 

 in the median line ; there are 1-3 somewhat similar but 

 flattened projections on each anterior margin of the axillary. 

 IIBr series 4 (3-f4), or once, 3 (2+3) ; segments 1-3 have 

 the spine-like tubercle at the median, distal margin prominent, 

 while the axillary may have one somewhat smaller, on each 

 side ; an additional similar tubercle may be developed in 

 connection with the well-marked distolateral angles. Lower 

 brachials quadrilateral with conspicuous distolateral angles 

 on the pinnular side ; the median spine-like tubercle is also 

 often developed ; after the seventh or eighth, the brachials 

 tend to become triangular and the distal margins tend to 

 flare, but there is no overlapping. Syzygy between 2 and 3 

 on every arm, with a IIBr series, but between 3 and 4 on 

 arms arising direct from the radial axillary ; second syzygy is 

 somewhere between the eighth and fourteenth segments ; 

 after that the syzygial interval is five or six segments. 



Pi somewhat prismatic, about 7 mm. long, of about 15 

 segments, curved inward, flexible, but not at all flagellate, 

 rather stout throughout ; the first segment is notably en- 

 larged, but not the second ; P2 erect, and spine-Hke, not at 

 all prismatic, about 13 mm. long, of 15 nearly cylindrical 

 segments, with spiny distal margins, all but the terminal and 

 2 lowest, longer than thick ; P3 very similar, perhaps a Httle 

 longer ; P4 similar, perhaps a little shorter than P3 ; P5-P10 

 similar, but successively shorter and with fewer segments, 

 which have less and less spiny distal margins ; Pi 1 of 11 

 segments and about 8 mm. long ; succeeding pinnules dis- 

 tinctly prismatic and gradually increasing to about 10 mm. 

 in length. Side and covering plates well developed. Arms 

 about 75 mm. long. 



1. 7re/)(A:r(\X)J<f=very pretty, in reference to both form and colouration. 



