KELLIA. 93 
appendage, which also serves as an oviduct. We have omitted 
to say, that when the feces are received within the mantle, 
they are instantly ejected in hght yellow or greyish cylindrical 
pellets. In this respect there is a difference between K. sub- 
orbicularis and K. rubra; in the former the anal orifice is 
protruded in a triflmg degree externally, in the latter it is 
within the mantle. 
The foot is broad at the base, long, linguiform, and has the 
termination rather rounded than pointed; its bluish-white 
hyaline texture is marked from base to point by a dull intenser 
flake-white line. When in a basin of sea-water, it at once 
attaches itself by thread-like filaments that issue from a distinct 
byssal fissure. The foot when exserted, but not in action, 
occupies a central position; it usually progresses anteally 
by bemg pushed through the anomalous fold of the mantle, 
and fixing itself by a species of suction, is drawn forward by 
muscular contraction with much vivacity, and it can also in a 
more limited manner progress posteriorly. The animal never 
remains long without forming a byssal attachment, but has no 
difficulty in shpping its cable when inclined to move, which is 
always discarded, and when required another is bent. The 
dark liver and yellow ovarium are situate high in the dorsal 
region ; the latter in the genial season contains from 10-20 or 
more fully-formed testaceous pulli, and at the full time, the 
viviparous colony are ejected through the tubular fold of the 
mantle. 
In a parcel of animals examined in the winter, the ovarium 
contained no young ; I therefore presume that “ Alma Venus” 
does not influence the self-sufficing loves of these Mollusca until 
Saeed ‘* species patefacta est verna diei, 
Et reserata viget genitabilis aura Favoni.”’ 
A review of these notes, and a comparison of them with 
those of K. suborbicularis, will, 1 think, prove that this species 
and its congener are nearly similar in organs, habitudes, and 
functions, with slight variations of specialties, and that they 
form a well-defined small genus which I believe only contains 
the two species that are described. 
