OPIIIOPSILA. 



149 



Ophionereis dubia Lyman. 



Ophiohph fluhin Mill. & Tkoscu. Syst. Asterulen, p. 94. 

 SAVitiNY. Doscr. do I'Egyptc (Auclouin). 1809. PI. 1, Figs. 3i- 3^ 



The plate of Savigiiy is most excellent, and <^lves all the details of 

 the genus and species. The specimen doubtless came from the lied 

 Sea, as the species is not found in the Mediterranean. 



LIST OF SPECIMENS. 



Catalogue 

 Number. 



Original 

 Number. 



Number 

 of Spec. 



Locality. 



When 

 Collected. 



Whence obtained. 



Nature of 

 Specimen. 



Museum of Comparative Zoology. 



434 



Red Sea. 



.lardin des Plantes. 1 Alcoholic. 



OPHIOPSILA Forbes. 



Type of the Genus, 0. aranea. 



Disk covered with very minute, overlapping, smooth scales. Radial 

 shields small, or else quite covered. Teeth. Tooth-papillie. A few 

 side mouth-papilloe. Arm-spines short, flattened, rather rough, numer- 

 ous, arranged along sides of side arm-plates. Inside tentacle-scale very 

 long, like a spatula. Lower arm-plates faintly indicated and sunken, 

 making a groove in which lie the long tentacle-scales. Two genital 

 slits beo;inninoj outside the mouth-shields. 



SPECIES HEREIN DESCRIBED. 



0. Riisei. 

 0. aranea. 



