from the Vancouver District. ]J 



obsoletis, ad periphcriam evanidis ; circa basim totam usque ad 

 oeripheriara angulatam lamina spirali, planata ; apertura ovali ; 

 iota snperticie minutissime spiraliter striolata ; operculo pauci- 

 spirali, nucleo ad trientem longitudinis sito, lineis incremanii va- 

 lidis. Long. 1-7, long. spir. 1-3, lat. -53, div. 20°- 



Hab. Puget Sound {U. S. Expl. Exp.); Neeah Bay and Ta~ 

 tooche Island [Swan). 



This species was doubtfully indicated, not described, by Dr. 

 Gould, in the ' E. E. Moll.' p. 207. It appears to be exactly iden- 

 tical with " crassicostata, Australia," in Brit. Mus., and is nearly 

 related to Ochutensis, Midd. It must not be confounded with 

 Acirsa borealis, Beck. One young specimen has the ten ribs of 

 O. ausiralis. 



50. Cerithiopsis munita 



C. testa C. purpurea simili, sed angustiore, marginibus spirse fere 

 rectis ; costis spiralibus magis expressis, testa adulta minus nodu- 

 losis ; basi sequaliter lirulata. Long. •34, long. spir. '24, lat. "l 1, 

 div. 20°. 



Hab. Neeah Bay; common [Swan). 



51. Cerithiopsis columna. 



C. testa majore, valde elongata, purpureo-fusca ; anfr. norm, ix., 

 planatis, suturis distinctis ; seriebus iii. nodulorum spiralibus 

 valde appressorum, ereberrimorum, interstitiis parvis, altis ; aliis 

 interdum intercalanlibus ; lira quarta supra suturam baud valde 

 nodulosa, liris duabus baud expressis aream suturalem cir- 

 cumeuntibus ; basi planata, baud sculpta, ad peripheriam obtuse 

 angulata; apertura quadrata. Long. '38, long. spir. 32, lat. "l, 

 div. 10°. 

 Hab. Neeah Bay ; several worn specimens {Sivan) : Monterey; 



rolled fragment of larger shell [Cooper). 



Easily recognized, even iu portions, by the " strung-fig " 



pattern. 



55. Cancellaria modesta. 



C. testa elata, subrufa, trichotropiformi, marginibus spirse rectis ; 

 anfr. norm, v., rotundatis, postice subtabulatis, suturis iinpressis ; 

 costis spiralibus obtusis, distantibus, in spira circ. iv., circa basim 

 prolongatam circ. vii., aliis minoribus interdum intercalantibvis ; 

 interstitiis secundum incrementa, decussatis; apertura sub- 

 quadrata; columella plicis duabus declivibus antieis et costulis 

 basalibus ornata; labio nullo. Long. -68, long. spir. '34, lat. 34, 

 div. 50°. 

 Hab. Neeah Bay; one specimen and fragment [Swan). 



56. Velutina prolongata. 



V. testa majore, subplanata, tenuiore, carnea, spira minima ; anfr. iii, 



245 



