OPHIURANS OF UNITED STATES NATIONAL MUSEUM. 



OphioUmva littoralis Koeliler. 

 Ophioleda minivia Koeliler. 

 Ophiotrema gracilis, new species. 

 Ophiocamax auslera Verrill. 



Ophiocoma alexandri Ljinan. 

 Ophiocovia echinata (Lamarck). 



OpMothrix angulata (Say). 

 Ophiothrix lineala Lyman. 

 OpMothrix cersledii Lutken. 



Ophiocamax fasciculata Lyman. 

 Ophiologimxis secundus, new species. 

 Ophiochiton grandis Verrill. 



FamUy OPHIOCOmD^. 



Ophiocoma pumila Lutken. 

 Ophiocoma riisei Lutken. 



FamUy OPfflOTHRICID^. 



Ophiothrix s^iensonii Lutken. 

 Ophiothrix convoluta, new species. 



Family OPHIOSCOLECID^. 



I Ophiobymella quadrispinosa, new species. 



Ophiomyxa fiacdda (Say). 

 Sigsbeia coni/era, new species 



Ophioscolex glarialis Muller and Troschel. 

 Ophioleptoplax atlantica, new species. | 



Family OPHIOCHONDRID^. 



Ophiochondrus granulattis, new species. | Ophiochondrus amuitus (Koehler). 



Family OPHIOMYXID^. 



I Ophiodera slimpsonii (Lyman). 



Family HEMIEURYALID^. 



I Sigsbeia seiradiata, new species. 

 Family ASTROCHEMID^. 

 Astrochema elongalum , new species. 1 



DESCRIPTIONS OF GENERA AND SPECIES. 

 Family OPIIIODERMATID^. 



OPmODERMA APPRESSA (Say). 

 {=Ophioderma virescens Liitkeu.) 

 See for bibliography: 



Lyman (82),' p. 9. 

 Verrill (99), p. 6. 

 H. L. Clark (01), p. 242. 

 H. L. Clark (Ola), p. 340. 

 Verrill (07), p. 326. 

 Koehler (07), p. 280. 

 Koehler (13), p. 353. 



Albatross station 2323. Jan. 17, 1885. Lat. 23° 10' 51" N.; long. 82° 19' 03" 

 W.; 163 fathoms; wh. br. co. One spccuuen. 



Alhatross station 2337. Jan. 19, 1885. Lat. 23° 10' 39" N.; long. 82° 20' 21" 

 W.; 199 fathoms; co. One specimen. 



FisJi Hawk station 7182. Nov. 28, 1901. Lat. 29°; long. 83° 18' 45" W.; 

 51 fathoms; rocky coral; temp. 15.3° C. Three specunens. 



Fish Hawk station 7215. Jan. 15, , 1902. Lat. 28° 26' N. ; long. 83° 02' 30" 

 W.; 7i fathoms; rocky coral; temp. 13° C. One specunen. 



1 The figures in parentheses, printed in IwlUtace type, refer to the bibUographio index at the end of the paper. 



