710 BEV. E. BOOG WATSON ON THE 



14. TeOCHUS (MARaAEITA) AZOEENSIS, W. 



. St. 75. July 2, 1873. Lat. 38° 37' N., long. 28° 30' W. 

 Payal, Azores. 450 fms. Sand. 1 specimen in spirit. 



Animal. — Dark in colour. Operculum rather strong, dark 

 horn-colour, of very many narrow whorls, which on the outside 

 are flanged with a thin narrow over lying border. 



^Tiell. — Small, strong, but not thick, conoidal, high, with 

 rounded contours, slightly angulated, scalar, sculptured, whitish, 

 with a slightly flattened base and a small umbilicus. Sculpture. 

 Spirals — there are very many close, unequal, irregular small 

 furrows, which are feebler on the base and strongest near the 

 suture, which is marginated below by a narrow smooth line round 

 the top of the whorls. In the centre of the base is an umbilical 

 depression with spiral threads in the bottom, and within this a 

 strong white porcellanous spiral cord, which almost closes the 

 umbilicus. Longitudinals — the top of the whorls is gathered 

 into broad rounded oblique puckers, which die out before 

 reaching the suture or the base. Besides these, the whole surface, 

 spiral furrows and all, is sharply scratched with very close 

 and numerous lines of growth. Colour yellowish translucent 

 white, with a dull all-pervading nacreous gleam. The strong 

 cord which fills the umbilicus is white, as is also the apex. 

 Spire high, scalar, the separate whorls being a good deal sunk into 

 one another, as well as flattened below the suture. Apex small, 

 rounded, the minute embryonic 1^ whorl barely projecting. 

 Wliorh 6, of regular increase, slightly flattened below the suture, 

 rounded on the contour, barely contracted round their base ; the 

 last is faintly angulated at the periphery, and not much rounded 

 on the base. Suture strongly marked by the contraction of the 

 whorl above and the margination below. Moutli oblique, round. 

 Outer lip sharp but strong, porcellanous on the edge, brilliantly 

 nacreous within ; it descends very slightly. Pillar-Up thick, 

 white, bent, nearly to the point of the pillar, over the umbilicus. 

 It would be reverted but for the great thickness of the spiral 

 pad, which comes twining up behind it out of the umbilicus, and 

 out of which, at the point of the pillar, it forms a flat, triangular, 

 tooth-like expansion. Umhilicus a minute spiral hole, which 

 twists in between the overlying pillar-lip and the umbilical pad ; 

 the edge is corrugated with the old lines of the lip. H. 0'33. 



