Order Lucernarice. 663 



from the angles of the mouth to the marginal muscle ; the 

 marginal muscle ligulate, very thin at the distal side of 

 the anchors and the tentacular tufts : gelatiniform layer of 

 the disc about one quarter as thick as the diameter of the 

 pedicel, rigid, a little thinner at the edge of the disc than 

 toward its centre ; at the end of the arms it suddenly be- 

 comes much thinner ; in the base of the pedicel it is not 

 more than one third as thick as in the disc ; in all parts of 

 the body, both disc and pedicel, the fibroid bodies of this 

 layer stretch in a direct course from the outer to the inner 

 surface ; between the cameras of the pedicel they cross 

 each other at a wide angle, and also cross the axis at right 

 angles to each other as they extend from diagonally oppo- 

 site cameras : the mtisculo-gelatiniform layer in the mar- 

 ginal anchors at least two thirds as thick as the gelatin- 

 iform layer of the disc ; at the margin of the disc it is as 

 thick as the gelatiniform layer at the same place, but it 

 gradually lessens to one third this amount toward the 

 mouth. Size, one inch across the disc, and one inch and 

 a half including the tentacles ; the pedicel half an inch long, 

 one twelfth of an inch average diameter, and a little more 

 than one eighth of an inch across the base. Geographical 

 distribution : Vardoe Is., Norway, Rathke ; Faroe Is., 

 Steenstrup ; English coast, Montagu, Fleming, Johnston, 

 &c. ; South coast of Greenland, Steenstrup ; Anticosti Is., 

 Gulf St. Lawrence, coUeg. in cxped. ex Mus. Comp. Zocil., 

 Camb., Mass., August, 1861, Messrs. Hyatt, Shaler, and 

 Verrill ; Mass. Bay, H. J. C. 



Haliclystus salpinx. H. James-Clark. 



This hitherto undescribed species is at once distinguish- 

 able from any other known Lucernarian by its remarkable 

 trumpet-shaped marginal anchors. Mr. Stimpson, to whom 

 I am indebted for the loan of specimens, and some sketches 

 of the animal taken from life, says in his notes, that, " from 



