364 MR. R. B.WATSON ON MADEIRAN MOLLUSKS. [Mar. 18, 



only one specimen, which was dredged at Ponta de Sao Lourenco in 

 50 fathoms. By the time my men brought me the dredgings, 

 though the animal was perfectly recognizable so far as colour went, 

 it was yet so much decayed that it broke to pieces in the process of 

 extraction ; and to complete the misfortune, I have mislaid the 

 lingual process, which I hastily put aside in spirits for preservation. 

 The shell was so completely covered with a hard thick incrustation 

 of lime as to leave no portion exposed. With great care I succeeded 

 in cracking off this incrustation in small bits from the last whorl, 

 leaving the epidermis quite fresh below. On the upper whorls this 

 incrustation and the shell beneath were so honeycombed by minute 

 annelids that both broke together, and obliged me to pause in my 

 work ; these annelids have also produced some warts on the 

 interior of both the outer and inner lip, which look deceptively like 

 irregular folds or teeth. 



/ (3\ Eulima paivensis, "Watson. (Plate XXXVI. fig. 29.) 

 /f ?/ Shell conic-oblong, white, strong, rounded in all its lines, broadish 

 in the base, blunt in apex. 



Sculpture smooth, with the rounded lines of a thing cast, not cut. 

 There are numerous but very faint lines of growth, and a doubtful 

 suggestion of excessively microscopic, close-set, spiral scratches, best 

 seen on the upper whorls ; beneath all these, as in many of the 

 Eulimce, the whole texture of the shell can, under the microscope, 

 be recognized as built up of longitudinal, microscopic, hair-like, 

 anastomosing columns, each about 10 1 00 inch broad. The labial rib 

 is strong and spread out. 



Colour semitransparent bluish white, like very much watered 

 milk, rendered brown by the presence of the animal. Behind the 

 labial rib there are three rusty stains, which show a tendency to 

 extend across the body-whorl as bands ; the highest and strongest 

 is just at the apparent marginal band below the suture ; the second 

 is at the periphery, the third on the base. 



Spire elongated, conical, with its contour-lines not quite straight, 

 but a little curved ; apex blunt and somewhat incurved. 



Whorls 7 to 8, very slightly rounded, of regular increase ; the last 

 is large. 



Suture slight, not quite smooth, little oblique, remotely margined 

 by the through-shining of the whorl above it. 



Mouth pear-shaped, being oval below, intrenched on by the 

 curve of the belly ; pointed above, and very minutely channelled at 

 the upper corner, deep. 



Outer lip thick, but finely though roundly edged. Some six or 

 eight concentric lines, which form the edges of the several accretions 

 of which the lip is built up, may be traced one within the other. 

 The lip retreats above, so as to form a very slight, shallow, and 

 open sinus ; below it advances a little, and has a free round sweep 

 across the base. 



Inner lip is spread in the form of a pad of enamel over the pillar, 

 which it envelops completely, and extends upwards as a thick callus 



