698 EEV, B, BOOG WATSON ON TUE 



edge, a peculiarity snggestive of the genus Basilissa ; but tliere 

 is not seldom in the TrochidsD a tendency to a backward curve 

 of the lip-edge at that point ; and in this species there does not 

 exist the characteristic infrasutural sinus which would connect it 

 with Basilissa or with Seguenzia, to which its tubercled pillar and 

 closed umbilicus rather point. 



Margarita earinata, A. Ad., from the Philippines, has some 

 points of resemblance with this, but is obviously very different — 

 markedly in the form of the umbilicus. 



4. Teochus (Ziziphinus) tkansenna, W. (A lattice.) 



St. 201. October 26, 1874. Lat. 7" 3' N., long. 121° 55' E. 

 Philippines. 102 fms. Stones and gravel. 1 specimen. 



Shell. — Small, conical, high, carinated, inflated on the base, 

 thin, sculptured, yellowish with small ruddy spots. Sculpture. 

 Spirals — close to the suture is a row of disconnected beads ; be- 

 tween this and the carina are three rows of appressed beads, of 

 Avhich the highest is the weakest ; these four rows are parted 

 from one another by furrows, each of which is a little broader 

 than the thread above it ; the carina also consists of a row of ap- 

 pressed beads ; it is stronger than the other threads both in 

 breadth and height, and the furrow above it is a little broader 

 and deeper than the rest. On the base are seven rows of ap- 

 pressed beads of nearly equal width and distance from one 

 another : the first joins the outer lip, the central row twines up 

 the pillar. These rows of beads make their appearance on the 

 second whorl, and, on all the upper whorls, more than on the body- 

 whorl, the carina is sharply expressed by a constriction above 

 and below it. Longitudinals — the whole surface is crossed 

 obliquely by not quite contiguous threads, which are almost as 

 strong as the spirals. Between the threads are narrow, deep, 

 long pits ; each alternate thread is crowned by a bead at the 

 suture. Colour. The surface is dull and rough, yellowish, sparsely 

 spotted on the spirals with a ruddy brown, which is almost crim- 

 son on the infrasutural beads. Spire high and conical, the whorls 

 being barely rounded. Apex small but flattened, the embryonic 

 I5 whorl scarcely projecting. Whorls 7, of regular increase, almost 

 flat, the body-whorl alone being slightly convex, rounded, and cari- 

 nated at the periphery and tumid on the base, in the centre of 

 which is the most minute umbilical chink. Suture deeply 

 and squarely impressed below the carina. Mouth slightly 



