T v hen residing last summcr among the islands and fiords of 

 tlie western coast of Sweden , I met with an auimal, the mere 

 external appearance of which iramediately attracted my parti- 

 cular attention. It was dredged at a depth of ahout 50 fathoms. 

 Unfortunately I obtained only one speciniCn, and as I was but 

 slenderly provided with zoological books, I thought it best to 

 defer the anatomical and histiological investiga^ion of it, till 

 I could command a move extensive litterature. I thus löst 

 the opportunity of studying the tissues while still fresh, 

 and from this many deficiencies in the following descrip- 

 tion arise. That I have, nevertheless, ol)tained some results, 

 I owe to the kindness of Professor S. Loven, who obligingly 

 placed at my disposal iive specimens of the same animal pre- 

 served in the National Museum of Zoology in Stockholm. 

 They were all from the fiords of our western coast, and mostly 

 captured by Professor Loven himself. Of the six specimens 

 I thus have had at my disposal, four have been used for ana- 

 tomical researches. 



Neomeiiia^) carinata n. wants every trace of articulation. 

 When in a contracted state (1, 2, 3.) it is curved almost in 

 the form of a halfinoon, somewhat comprossed above, so that 

 a longitudinal ridge is formed along the back. Only one of 

 the specimens of which I could avail myself was extended 

 (4, 5.). The under profile was almost straight, whereas the 

 back remained somewliat convex. The specimcn I have 

 myself taken continued to Iive a couple of days in seawater, 

 during the whole of which time it lay, in a contracted state, 

 on its side, showing no other signs of life thau an occasional 

 "pcniug of the anal aperture. The colour of the animal was 



') \iOur]Vi(i, alluding partly to the lunafed form of the body, and portly to 

 the novelty of its structiire. 



