Fam. 3, Plate 41. 



Figs. 6 and 7- 

 LOMANOTUS FLAVIDUS, Alder and Hancock. 



L. flavidus ; velo parvo tuberculato ; tentaculis clavatis, intra vaginas tuberculatas retractilibus ; 

 branchiis parvis, papillosis, fulvo-cinctis, ad latera dorsi utrinque in serie unica dispositis. 

 Eumenis flavida, Aid. and Hanc., in Ann. Nat. Hist., v. 18, p. 293. 

 Lomanotus flavidus, For. and Hani., Brit. Moll., v. 3, p. 586. 

 Hab. Dredged in Lamlash Bay, Isle of Arran, /. A. 



Body a quarter of an inch long, quadrilateral, lemon-coloured above, white beneath. 

 Dorsal tentacles clavate, laminated, pale yellowish white, the sheaths set round the top with 

 about six tubercles, the outer ones largest, each having a ring of fawn-colour. Veil very- 

 small, with four tubercular points. Brancliice papillose, mostly very short, but three on each 

 side, set at regular intervals, are larger than the rest and nearly linear ; each papilla is 

 encircled by a band of fawn-colour, one or two of the larger ones having a faint indication of a 

 second band below. They are set on a slightly waved pallial ridge, commencing at the sides 

 of the veil in front and reaching nearly to the tail. The sides of the body are white, with a 

 few pale yellow markings. Foot nearly linear, transparent white, slightly tinted with purple- 

 brown at the edges ; the front is strongly grooved transversely, notched in the centre, and 

 produced into long tentacular points at the sides. 



The interest attached to this little mollusk on account of its shewing a modification of 

 form in a very rare genus, induces us to give figures of it, although we are obliged to place 

 them out of the regular order. 



Only three species of Lomanotus have yet been discovered. In L. Genei, of Verany, a 

 species nearly two inches and a half long, the branchiae form foliaceous expansions of the 

 pallial ridge : in our L. marmoratus the same character is apparent ; but in the present species 

 the pallial margin is very indistinct and the branchiae begin to assume the form of regular 

 papilla?, indicating a nearer approach to the typical forms of the family Folididte. 



We obtained the only known example of this species on a small Antennularia brought 

 up by the dredge from three or four fathoms water, in Lamlash Bay. Unfortunately, it 

 was a little injured, and did not long survive. 



Kg. 6. Lomanotus flavidus, back view, 



7. Anterior portion of the under side. 



