CRIMORA. 73 



was first found by Montagu near low-water mark, at Milton, 

 Devon. It has since been met with on the Cornish coast by 

 Mr. Richard Couch [and Mr. Cocks] ; at Weymouth by Mr. 

 Thompson, and in Salcombe Bay by the Rev. T. Hincks. 

 [Brest (Fischer).] 



2. T. yirescens, Alder and Hancock. 



T. virescens, A. & H. Brit. Nud. Moll. p. 44, and App. p. iii. 



Body rather convex, of a pale peach-blossom tint, blotched 

 with green before and behind : dorsal tentacles broadly lami- 

 nated, green, with small simple sheaths : head with a plain 

 margin in front : gills 5, green, margined with white ; a single 

 row of obtuse tubercles encircles the branchial region. L. 03. 



Habitat : Two specimens were found by Mr. Cocks on an 

 oyster-bed at Bar point, Falmouth, in March 1849. 



3. T. cafita'ta. Alder and Hancock. 



T. capitata, A. & H. Brit. Nud. Moll. p. 44, and App. p. iv. 



Body white, freckled with greenish-brown : mantle very 

 indistinct, forming a veil over the head and a faint pallial 

 ridge on the sides of the body, disappearing before reaching 

 the gills : the head-veil has four or five orange tubercles on 

 each side, and a row of the same between the tentacles ; there 

 is also a row of tubercled orange spots on each side of the 

 body below the veil, and a central and two lateral rows of 

 obscure yellowish tubercles reach from the gills to the tail : 

 dorsal tentacles with small simple or plain sheaths : gills 7, 

 pinnate, tipped with orange : there is a stout branchial lobe 

 on each side, also tipped with orange. L. 0-25. 



Habitat : Dredged in 20 fathoms water off St. Ives, Corn- 

 wall, by Mr. Barlee in 1853. • 



Genus IV. CRIM'ORA* Alder and Hancock. 



Body limaciform : mantle very indistinct, forming a veil 

 with branched appendages over the head, and a pallial ridge 



* A proper name from Ossian. 

 VOL. V. E 



