RECENT OPHirRANS. 169 



4. 0. BRE^IRIMA, sp. nov. (breuis, short + rima, cleft). Plate 1, f. 3, 4. 



Disk, 22 mni. in diameter; arms, 70 mm. long. Similar to australis, except 

 that the radial shields are very small, the genital slits are relatively much shorter 

 (hence the name) and the arm-spines are fewer and differently arranged. The 

 radial shields are less than .20 of the disk-diameter, while in australis they are 

 .20-.25. The genital sUts extend nearly to the fom-th arm-joint, while in austra- 

 lis, they extend nearly or quite to the fifth. There are only three or four arm- 

 spines (australis has five or six); on most joints there are three short, blunt 

 subequal spines while on every third, or frequently on every second joint, there 

 is a fourth, stouter spine situated at the upper (aboral) end of the series. The 

 color of these dry specimens is yellow-brown; in one, the arms are faintly banded. 



HoLOTYPE (M. C. Z. 2680) and 3 paratypes (M. C. Z. 2681) New Zealand: 

 Otago Harbor. 



These specimens were received in exchange from the Otago University 

 Musemn, in 1907. Although superficially much like australis, the very char- 

 acteristic arrangement of the arm-spines forbids considering them representa- 

 tives of that species, which has been recorded hitherto several times from New 

 Zealand. Further investigation will be necessary to show whether all New 

 Zealand specimens should be referred to brevirima, or whether both species 

 occur there. The new species shows no close relationship to any other member 

 of the genus, but is perhaps nearest to vivipara of subantarctic distribution. 



5. 0. FLACCIDA (Sat). 



Ophiura flaccida Sat, 1S25. Journ. Acad. nat. sci. Phil., 5, p. 151. 



Ophiornyxa flaccida LOtken, 1859. Add. ad hist. Oph., pt. 2, p. 79, 138. Ltman, 1865. lUus. 

 cat. M. C. Z., no. 1, pi. 2, f. 6 (colored). 



74 specimens. Bermuda ^r Fairyland Bay. Florida': West Coast; 

 Cape Florida; Key West; off the Tortugas, 36-101 fms.; off French Reef,' 

 45 fms.; off Sombrero Key, 103 fms. Cuba: off Havana, 175 fms. Haiti': 

 Caymites. Jamaica': Montego Bay. St. Thomas, D. W. I. Brazil: Bahia. 



6. O. PANAMENSIS Lijtken and Moktensen, 1899. Mem. M. C. Z., 23, p. 182, pi. 7, f. 1-3. 



2 coTYPES. Panama. 



7. O. PENTAGONA (Lamabck). 



Ophiura pentagona Lamarck, 1816. Anim. sans Vert., 2, p. 546. 

 Ophiornyxa pentagona Mullek and Trosceiel, 1842. Syst. Ast., p. 108. 



72 specimens. Nice. Naples. Trieste. Algeria: Algiers. 



' Without definite locality. 



