G.94 



EEV. R. EOOG WATSON OX THE 



of tlie mouth resembling that in the Pleurotomidae, and differing 

 from that of Seguenzia in the same way as the sinus of Defrancia 

 differs from that of a typical Fleurotoma. 



I may further say that I have lately, through the kindness of 

 Dr. Grwyn Jeffreys, had an opportunity of examining a specimen of 

 the Solarium reticulatum, Phil, (see ' Enumeratio,' II. 149, XXY . 6), 

 a subfossil species from Calabria. It is quite certainly a Basilissa, 

 and is intermediate between B. costulata, W., and B. oxytropis, 

 W. Prom the former it differs in being much flatter on the base, 

 sharper at the edge of the umbilicus and at the carina, and much 

 more delicately sculptured. Than B. oxytropis it has a less ex- 

 pressed carina, and the whorls are not angulated in the middle. 



1. TRocHrs (GiBErLA) GLTPTUS, W. (yXvTTTos, carved.) 



St. 164 A (2). June 13, 1874. Lat. 3^° 13' S., long. 15^38' E. 

 Sydney. 410 fms. Grrey ooze. 1 specimen. 



Shell. — Like T. magus, L., but carinated, higher, less scalar, 

 and much more delicately and richly sculptured. Sculpture. 

 Spirals — a flat shoulder below the suture is followed by an angu- 

 lation, on and below which is a double row of smallish, round, but 

 pointed tubercles, which are remote from one another but run in 

 pairs on the two rows. The tubercles in each row are connected 

 by a slight rounded thread. On the second, third, and fourth 

 whorls these rows coalesce into one ; on the last whorl they 

 are about 0*05 inch apart. At the periphery is a strong angu- 

 lation bearing a sharp carina. About 0*05 inch above this is a 

 spiral thread which, as well as the carina, is ornamented with 

 delicate, sharp, laterally-compressed beads separated from one 

 another by about twice their own size. Those on the upper 

 spiral are rather the larger ; the middle of the whorl for about 

 O'l inch is bare. On the base there are five closely-beaded 

 threads, of which the inmost and strongest defines the umbilicus. 

 Between the outermost and the carina is a broad slightly sunken 

 furrow. The carina meets the outer lip and appears above the 

 suture. Longitudinals — the upper whorls are ribbed, but the 

 ribbing gradually breaks into the double row of paired tubercles, 

 and the link uniting the pairs in the two rows becomes very 

 feeble. There are besides many distant, irregular, loose-skin-like 

 puckerings which follow the lines of growth ; they disappear on 

 the spiral threads. The w^hole surface is further roughened by 

 microscopic flexuous wrinklings. Colour yellowish white on the 



