898 IMOLLlSKy i)V 'IMIK CJAI.APAdOS STEARNS. 



idontUicaticm. Naiiu'd hy ('arju'titcr tVoiu Montorey, Cal., rxainplos; 

 collected by JNIr. Jlailbrtl and myself in ISdT; now in the National 

 Museum. 



Goims RISSOINA Orl.iuiiy. 



83. Rissoiiia foitisC. 15. Ailains. 



Pencil. 



Hood l.slaud, two sliells (Mas. No. 10-380). This species is in 

 NN iniiiu'i's list. 



Family (WIA'PTU.EID^E. 



Genus MITRULARIA ScIumikioIkt. 



84. Mitiularia cepacea Hmd. 

 =:CaIylraa apavcd Hrod.. Auct. 



Beach, rare. 



Iiidefatijiable Island, one si)ecin»en (No. 10L'4(>li); Chatham Island, 

 three ji'ood si)eciniens (i\Ius. No. 122110). Dr. .Jones collected a spe- 

 cimen of this form at Mauta, Ecuador (No. 4S402). Tryon includes 

 the above in his synonymy of vqui'stris. Wimmer's list contains Vahjp- 

 tr(va varla lUod., which may be the same as 1 regard as cepacea or 

 the followinji". The Museum has an example of this rare form from 

 Acapulco (No. 00248) and one from Panama (No. 3008). 



85. Mitiularia corrugata Brod. 

 =:zCal!iptr(ia ci>rru(i<it(i l?n>(l., Auct. 



Beach shells. 



.lames Island one imperfect exami)le, but in sulhciently jiood condi- 

 tion to show clearly the characteristics of this rare species (Mus. No. 

 102511). This species appears to be another addition t(» the (lalapaji'os 

 list; it occurs at Acapulco, though (juite rare iu>arly everywhere along 

 the coast (Nos. G0247 and 59208). ' . 



Genus CRUCIBULUM Scliuuiachor. 



86. Crucibiihuii imbiicatum lUod. 



Beach s]>ecimen. 



.lames Island; a single cxam])l(' in |)oor condition. Not belore re- 

 ])orted from the Galapagos. This loiin ranges fiom Lower California 

 in the north to Payta, Peru, where several «'xamplcs some 2.^ inches in 

 diameter were obtained by Dr. Jones. The small (lalapagos collection 

 made by Dr. .lonesat Chatham Island inehuh's (\,s})iii(>sinn Sby., which 

 seems to have escajjcd dett'ctiou by the Albatross colhMtors. This 

 latter ranges nuu-h farther to the north than imhriciitum, uinni}]}, io 

 Monterey, Cal. 



