OPHIURANS OF UNITED STATES NATIONAL MUSEUM. 7 



OPHIODERMA RUBICUNDA LUtken. 



• See for bibliography: 



Verrill (06), p. 6. 

 n. L. Clark (01), p. 2-12. 

 Kcehler (07), p. 282. 

 Koehler (13), p. 354. 



Nassau. One specimen (Xo. 14646). 



OPHIODERMA VARIEGATA LUtken. 



Ophioderma variegata Lltkev (59), p. 97. 



Ophodenna variegata Ljunum.^n (66), p. 304. 



Ophiura variegata Veruili, (67), p. 254. 



Ophiura variegata L-ni.\N (76), p. 3. 



Ophiura variegata Lyman (82), p. 10. 



Ophioderma variegata Lutken and Mortensem (99), p. 100. 



Ophioderma variegata K(eiiler (07), p. 282. 



Albatross station 2S24. Apr. 30, 1888, Gulf of California. Lat. 24° 22' 

 30" N.; long. 110° 19' 30" W.; 8 fathoms; brk. sh. Ten specimens. 



The diameter of the disk ranges between 5 and 8 mm. ; the length of the arms 

 reaches 25 mm. 



Most of the specimens have preserved bright colors. The upper face of the 

 disk is pink or even red, washed -with green in the interi'adial spaces near the margin 

 of the disk; the under face is greenish. The ai-ms are annulated with green and 

 red. Tliese colors are even brighter than is generally indicated. 



By their general structure, these specimens are most closely alhed with 

 0. brevispina from the Atlantic, from wliich they differ above all by their colora- 

 tion. The bracliial spines, generally amounting to seven, are short. 0. variegata 

 is likely to be one day definitely classified mth 0. brevispina, as some writers have 

 already suggested. 



OPHIODERMA CLYPEATA, new species. 

 Plate 18, figs. 2 and C. 



Blal-e station. 241. Feb. 24, 1879. Off Grenadines; 103 fathoms; s., co.; 

 temp. .53° F. One specimen. 



Tijpe.—Cnt. No. 6514, U.S.N.M. 



This Ophiura was labeled Ophioderma elapsl It was mentioned imder the 

 same name, followed as weU by a note of interrogation, by Lyman in 1883 (83, 

 p. 230), with other mdividuals coming from two other stations (depths 300 and 120 

 fathoms), and which I have not seen. 



Lyman says only that these specimens differ from Liitken's tyjje in having 

 from six to seven bracliial spines instead of from seven to eight. In fact, the differ- 

 ences are actually more important, and I have been able to appreciate them by 

 comparing the specimen wliich belongs to the United States National Museum with 

 one of Liitken's types, which my friend Doctor Mortensen has Idndly lent me 

 It seems to me impossible that this specimen should be united with 0. elaps, and, 

 in my opinion, it ought to constitute a new species for which I propose the name 

 of Ophioderma. chjpeata. 



6061°— Bull. 84—14 2 



