REPORT UN THE ASTEROTDEA 543 



"Knight Errant" Expedition : 



Station 3. Off the Island of North Rona. August 3 and 4, 1880. Lat. 59" 12' 0" 

 N., long. 5° 57' 0" W. Depth 53 fathoms. 



" Triton " Expedition : 



Station 1. In the Faeroe Channel. August 4, 1882. Lat. 59° 51' 30" N., long. 6' 

 21' 0" W. Depth 240 fathoms. Bottom temperature 47 o> Fahr. 



Station 10. 1 In the Faeroe Channel. August 24, 1882. Lat. 59° 40' 0" N., long. 

 7° 21' 0" W. Depth 516 fathoms. Bottom temperature 46°'0 Fahr. 



Station ll. 1 In the Faeroe Channel. August 28, 1882. Lat. 59° 29' 0" N., loucr. 

 7° 13' 0" W. Depth 555 fathoms. Bottom temperature 4 5° 5 Fahr. 



2. Cribrella ornata, Perrier. 



Echinaster (Cribella) ornatus, Perrier, 1869, Ann. Sci. Nat., 5e S6rie, t. xii. p. 251. 



Cribrella ornata, Perrier, 1875, R^vis. Stell. Mm, p. 112 (Archives de Zool. exp6r., t. iv. p. 376). 



Locality. — Simon's Bay, Cape of Good Hope. Depth, shallow water to 20 fathoms. 



3. Cribrella compacta, n. sp. (PI. XCVI. figs. 1 and 2 ; PI. XCVIII. figs. 3 and 4). 

 Rays five. R= 15 - 5 mm. ; r = 3 mm. R>5 r. Breadth of a ray at the base, 3 mm. 

 Rays elongate, delicate, subrigid, tapering from the base to the extremity, which is 



obtusely pointed. Disk slightly conoid, with faint depressions or sulci along the median 

 interradial lines. Interbrachial arcs distinctly angular. 



The abactinal and marginal plates are large in relation to the size of the starfish, and 

 bear compact groups of numerous, uniform, delicate, microscopic spinelets, with denticulate 

 tips. The interspaces or meshes between the plates are smaller than the plates, but are 

 distinctly defined and occupied by a single papula. 



Two contingent longitudinal series of plates may be more or less clearly discerned 

 external to the adambulacral plates, the lower one being most distinct; these are probably 

 the representatives of the supero-marginal and infero-marginal plates. These plates are 

 larger than the abactinal plates but are covered with exactly similar spinelets. 



The adambulacral plates are very little broader than long, and their armature consists 

 of a compact group of short uniform spinelets, two at the furrow margin, which are placed 

 obliquely so that one is most prominent, being larger than the rest. Frequently a third 

 small spinelet is present on the other side of the foremost spinelet, making a triangular 

 set on the furrow margin. The spinelets on the surface of the plate do not show any 

 definite arrangement, but they may be resolved more or less indistinctly into three or 

 four transverse series. There is a single minute spinelet at the apex of the plate, which 

 is placed very high in the furrow. 



1 The examples from these Stations are a deep-sea variety, which I proposed to call var. cylindrella (Trans. 

 Boy. Soc. Edin., vol xxxii. p. 160, pi. xxvi. fig. 8). Canon Norman has since informed me that he thinks this 

 name will be synonymous with his var. abyssieola. 



