202 SUPPLEMENT. 



(C. and T.). E. Norway (Sars and others). E. Spitzbergen 

 (Phipps); Vancouver's I. (P. Carpenter). A restless little 

 animal, with its lateral filaments incessantly twisting about, 

 like ever watchful sentinels. llth July, 1867, millions of 

 the fry taken by Mr. Norman in his towing-net at night, 

 swimming on the surface of the water in Balta Sound. Dr. 

 Bergh could not detect any lens in the eye-like tubercles at 

 the base of the filaments. The male appears to be Margarita 

 campanulata of Morse. 



P. 298. T. GBOSNLANDICUS. N. of Hebr., 189 and 530 f., 

 dead (C. and T.). F. Caithness (Peach) ; Norway (Sars and 

 others). E. Earoe 1. (Steenstrup) ; Labrador (Packard). 

 Yar. Icevior. Kyleakin, Skye, with the typical form (J. G. J.) ; 

 Upper Norway (M' Andrew) ! 



P. 299. Add TROCHUS GLA.UCUS*, Moller. (Margarita 

 glauca, Moll. Ind. Moll. Groenl. p. 8.) 



SHELL globosely conical, rather thin, semitransparent, of a 

 dull hue : sculpture, numerous and close-set fine spiral striae, 

 which are wavy on the body- whorl, and stronger on the up- 

 per whorls and the umbilicus : colour pale bluish-white : spire 

 moderately raised ; apex blunt, depressed : whorls 4, tumid : 

 suture deep : mouth circular, sloping towards the base : outer 

 lip plain and sharp-edged : inner lip folded back a little on 

 the umbilical cavity : umbilicus small and narrow, but deep : 

 inside nacreous : operculum having 8 or 9 volutions, defined by 

 somewhat raised edges, which are white and fringed ; centre 

 slightly concave. L. 0-1. B. 0-125. 



HABITAT : Dredged by Mr. M'Andrew in about 20-30 f., 

 between Kyleakin and Kyle Ehea in Skye. E. Clyde beds 

 (Brown, as Margarita olivacea) ; Uddevalla (Crosskey and 

 Robertson)! E. Greenland (Moller)!; Davis's Straits (A. 

 Hancock, as M. Harrisoni) ! ; Wellington Channel, 78 f. (Bel- 

 cher) ! ; Casco Bay, Maine (Gould, as M. argentata) \ The 

 last has a coarser sculpture. Arctic specimens are ^ inch in 

 breadth. 



P. 304. T. cinereus. N. of Hebr., 170 f. (C. and T.); Skye, 

 perhaps semifossil (Waller) ! E. Norway (Sars) ; Labrador 



* Bluish-grey. 



