314 



T. SERPULOIDES, (Mont, certe) et nobis. 



? Skenea divisa, Brit. Moll. iii. p. 161, pi. 74. f. 4, 5, 6 ; iv. p. 269. 

 ? S. lavis, Brit. Moll. iii. p. 165, pi. 88. f. 5, 6. 



I present an account of a highly important unrecorded 

 animal, that has long been sought for, not only by the simple 

 malacologist, but by the professors of the science, to settle 

 the apocryphal family of the Skeneada. To show that its 

 acquisition is very desirable, I need only mention that Pro- 

 fessor Forbes did me the honour to request that I would 

 include this minute creature in my researches, as he thought 

 it would in all probability resolve a malacological problem. 



Animal inhabiting a discoid white shell of three spiral turns, 

 striated around the umbilicus of the body-volution with fine 

 capillary lines, the upper part of the whorl being plain ; it is 

 pure hyaline-white, except the eyes and head-disk. The head 

 is a rather long, broad, finely wrinkled proboscidal muzzle, 

 with a vertical fissure, having a pale red or pink disk, from 

 whence the corneous jaws and lingual riband may sometimes 

 be seen in action, but not so conspicuously as in the Rissoa. 

 The tentacula are long, flattish, frosted on the central line, 

 not irregularly setose at the edges, but most elegantly 

 clothed, each on both sides, with 12-14 long hyaline cilia, 

 arranged in symmetrical series, inclining obliquely from 

 base to point, and diminishing in length in like manner. I 

 have never seen tentacula so elaborately adorned. The eyes 

 are very large, black, and lateral, attached nearly at the 

 external bases on round inflations to the main stems, there 

 being no distinct pedicles : no head-lobes were detected. 

 There are two neck-lappets of different form, the one on the 

 right side being narrowish, flat, and semiserrated ; that of the 

 columellar range is shorter, more suboval, and plain. The 

 foot is subtruncate or subrotund in front, superficially labiated, 

 forming at the angles long curved linear auricles, somewhat of 

 the shape of the Murex varicosus (Nassa, nonnull.), but longer 

 in proportion, thin at the edges of the sole, which is not 

 fringed ; it is moderately long and rather obtusely pointed. 

 The operculigerous lobe is also plain, and of the same shape 



