NO. 14 A NEW STARFISH CLARK 3 



sometimes fifth or even sixth, adambulacral, and the uppermost 

 (fourth) spine decreases in size and disappears. Terminally, the 

 combs consist of two long spines and a very short third. 



The mouth plates are large, somewhat longer than the two follow- 

 ing adambulacrals taken together, with the portion beneath the first 

 tentacle reaching half the lateral length. They are in close apposition 

 both radially and interradially, and the adjoining radial portions of ad- 

 jacent plates form a broad band beneath each ambulacral groove. Each 

 plate bears usually five very short spines, none of which is as long 

 as the distance from the proximal edge of the plate to the first 

 tentacle. One or two of these spines are on the midradial edge of 

 the plate at or near the distal end, and the remainder are on the 

 proximal border. 



The adambulacral plates are about twice as broad as long, becom- 

 ing longer in the distal half of the rays. Each bears a prominent 

 furrow spine. These are at first small and pointed, increasing in 

 length to the fifth and following, which are about 4.5 mm long. The 

 sixth and the succeeding 23 to 25 are broadened, widening gradually 

 from the base to the abruptly truncated tip, and chisel-shaped, the 

 tip being strongly curved with the concavity outward. The following 

 spines soon become slender and sharp again. Terminally, the furrow 

 spines become gradually reduced to fine needlelike spines no longer 

 than the plates themselves. 



Remarks. — This new species appears to be most closely related to 

 Od'uiia senii-caronata (Perrier). which was dredged by the Talisman 

 at station y^, south of the Canary Islands, in 1,056 to 1,435 meters. 



EXPLANATION OF PLATE 



Plate i 



Odiuia antilleusis, n. sp., the type specimen (U.S.N.M. no. E.3266) from Caro- 

 line station 47; disk and portions of three rays. X li- 



