ON DRKDOINQ OFF THE DURHAM AND N. -YORKSHIRE COAST. 195 



Rissoa parva, Da Costa : mc. Durham and NortJiumberland coasts, 20-30 fa. 



, var. intcrrupta. More common. 



striata, A Amms: mc. In most of the gatherings. 



vitrea, Mont. : r. Oft" Plawthorn, 35 fa. ; sandy gravel. 



* soliita, Phil. : mc. Obtained with the above. 



Cacum f/Iahrum, IMont. : nic. Oft" Seaham and Redcliftj 30-35 fa. ; sandy mud 

 and gravel. 



Turritella terehra, Linn. Off" Marsden and Seaham, 35 ia.. ; muddy sand. 



Scalaria Trevelijana, Leach : mc. Oft" Redcliff and Robin Hood's Bay, 30-35 fa. ; 

 gi"avell3\ 



Aclis ascnrisyTuxton : r. Off Scarborough, 17 fa. ; sandy. 

 *Odostomia rissoides, Hanley : r. Oft' Hawthorn, 20 fa. ; "sandy gravel. 



* acuta, Jeff. : mr. Off Hartlepool and Scarborough, 25-35 fa. ; muddy sand 



and gravel. 



tmidentuta, Mont. : r. Off Hawthorn, 20 fa. ; sandy gravel. 



obliqua. Alder : r. Oft" Marsden, 35 fa. ; muddy sand. 



* , var. fFrtnY/i/j", Thompson. Oft" Hawthorn. 



itidistinda, Mont. : mc. Oft' Robin Hood's Bay, 30 fa. ; gravelly. 



interstincta, Mont.: r. Oft' Castle Eden, 20 fa. ; gravelly. 



spiralis, Mont. : mc. Robin Hood's Bay, 30 fa, ; gravelly. 



lactea, Linn. : mc. Redclift", 30 fa. ; gTavel and dead shells. 



* acicu/a, Thil. : mc. Oft' Hawthorn and Scarborough, 20-25 fa. ; sandy gravel. 



Stilifer Turto/ii, Bred. : mr. Oft" Sunderland and Seaham, 20-35 fa. ; on spinea 

 of Echinus pictiis. 



Eiditna distorta, Desh. : c. Off Hawthorn, 20 fe. ; sandy gravel. 



, var. gracilis. With the above. 



hilineata, Alder : mc. Oft" Seaham and Hartlepool, 35 fa. ; muddy sand. 



Natica islandica, Gmel. : r. Off Redcliff, 30 fa. ; gravel and dead shells. 



grccnlandica, Beck : r. 20 miles of Sunderland, 45 fa. ; muddy sand. 



Alderi, Forbes : mc. Small, in most of the gatherings. 



Montaenti (Montaffui), Forbes : mr. In a few of the gatherings. 



Velutina laivic/uta, Penn. : mr. Off Robin Hood's Bay, 30 fa. ; gravel and zoophytes. 



Aporrhaii jics-jwlecani, Linn. : mc. Oft" Marsden and Simderland, 33-45 fa. ; 

 muddy sand. 



Buccinmn iindatum, Linn. Obtained with the above, the shells thin and small 

 with high ridges. 



Trophon truncatus, Strom : mc. Redcliff and Robin Hood's Bay, 30-35 fa. ; gravelly. 



Fiisus gracilis, Da Costa : mc. 7 miles off Marsden, 30 fa. ; muddy sand. 



antiquus, Linn. : mc. With the above, mostly small, some large. 



propinquHs, Alder: mr. Off Marsden, 33 fa. ; muddy sand. 



Nassa incrassata, Strom :■ mc. Ha-svthorn and Redcliff;" 20-30 fa. j sand and 

 gravel. 



Defrancia linearis, Mont. : mc. Redcliff, 30 fa. ; gravel and dead shells. 

 * picrpnrea, Mont. Obtained with the above. 



Fleurotoma hrachy stoma, Phil. : mr. Off Marsden, 33 fa. ; muddy sand. 



turricida, Mont. : me. Oft Redclift; 30 fa. ; gravel and dead shells. 



Trevehjana, Turton : mc. Off Robin Hood's Bav, 30 fa. ; gravel and zoophytes. 



Cijprcea europcpa, Mont. : r. Dead shell in several gatherings. 



Cylichna nmhilicata, ]\Iont. : mc. Castle Eden and Redclift; 20-30 fa. ; gravelly. 



cylindracea, Penn. : c. With the above. 



*Utricidus mainmtlhttus, Phil. : mr. With the above. 



truncatulus, Brug. : mc. Oft" Sunderland and Redcliff, 30^15 fa. ; muddy 



sand and gravel. 



ohtusus, Mont. : r. Off Sunderland, 45 fa. ; muddy siind. 



*Acteeon tornatilis, Linn. : mc. All small, none more than \ inch, off Hawthorn 

 20 fa. ; snndy gravel. 



Philine scabra, Mii'll.: mr. Off Marsden, .33 fa. ; muddy sand. 



PlEEOrOPA. 



*Spirialis retroversus, Flem. : r. 5 miles off Redcliff, SO fa. j gravel and dead shells. 



o2 



