1881.] 'lightning' AND 'porcupine' EXPEDITIONS. 927 



Fossil. Miocene: Vienna Basin. Upper Tertiaries : English and 

 Belgian Crags, S. France, Italy. Post-tertiary : Scandinavia, British 

 Isles, Calabria, Rhodes ; 0-460 ft. 



There are many synonyms, including Tellina apelina of Renier, 

 Muctra boysii of Montagu, and Ei-ycina renieri and E. similis of 

 Philippi. Renier never described this species. He seems to have 

 taken the name apelina from Gmelin, who altered it from opalina 

 of Chemnitz, a very different shell said to inhabit the Nicobar Isles. 



/^ 6. SCROBICULARIA PRISMATICA, MontagU. 



Ligula prismatica, Mont. Test. Brit. Suppl. p. 23, t. 26. f. 3. 



S. prismatica, B. C. ii. p. 435 ; v. p. 189, pi. xlv. f. 1. 



'Porcupine' Exp. 1869: St. C, 14, 23a, 2.5, North Channel, 

 33, 3.5, 40, 51, 68. 1870 : Atl. 10, 16 ; Med. 50, G. Bona, Benzert 

 Road, G. Tunis, Adventure Bank. 



Distribution. Iceland and Hammerfest to the ^Egean and Adriatic ; 

 0-150 fms. 



Fossil. Upper Tertiaries : Coralline and Red Crag, Belgium, Biot, 

 Italy. Post-tertiary : Norway, Scotland, Calabria. 



Tellina angulosa of Renier, but not described, nor Gmelin's species 

 of that name ; T. stricta, Brocchi, Lixjula donaciforniis, Nyst, and 

 Erycina vitrea, Danilo and Sandri. 



Family XVII. Solknid^. 

 »^ 1. SoLECURTUS scopuLA, Turtou. 



Psammobia scopula, Tiirt. Conch. Brit. p. 98, pi. vi. f. 11, 12. 

 (1822). 



S. candidus, B. C. iii. p. 3 ; v. p. 190, pi. xlvi. f. 1. 



' Porcupine' Exp. 18/0 : Med. St. 50. 



Distribution. Shetland Is. to the Morea, Adriatic, Madeira, 

 Canaries ; 0-80 fms. It has not been noticed in that part of the 

 Norwegian seas which is in the same latitude as Shetland. 



Fossil. Upper Tertiaries : Belgium, Italy. Post-tertiary : Scot- 

 laud, Rhodes. 



I give a fuller description of the animal : — Body dirty white, with 

 a faint tinge of brown : mantle thick, protruded beyond the valves of 

 the shell ; edges finely and minutely ciliated : tubes united in a 

 fleshy sheath to within a short distance from their extremities, where 

 they diverge and become strangulated or corrugated ; both tubes 

 are finely ciliated in longitudinal rows; orifices fringed with short 

 papillae ; the incurrent or larger tube is sometimes speckled with 

 orange towards the point ; the excurrent tube is somewhat narrower, 

 but often longer than the other ; the tubes vary in their relative 

 length : foot tongue-shaped, very tliick and fleshy. Inhabits the 

 sand at low-water mark, Ilerm. 



I must repeat my doubt that the Soleti candidus of Renier was 

 this species, or any thing more than a white variety of Soleairtus 

 strigilatus. Renier's specific name has not been adopted hy later 

 writers on Mediterranean couchology. Scacchi in 1836 described 



