LIST OF SHELLS COLLECTED ON THE WEST COAST OF SOUTH AMERICA. PRINCIPALLY BETWEEN LATITUDES 7 30 S . AND 8-49 N , BY DR. W. H JONES. SURGEON, U S NAVY. BY *■ Roi'.ERT E. C. Stfarns, AdjHHit Curator of the Dr^arlmfnt of AMlusks. In tin* yt'ar l.s,sj ti,,. national colUrtion was enricln-d by the acMition of various iiiuttMial cnllrcii'd hy Dr. N\ . H. .lonr.s, of the U. S. Navy, wliilf conni'ctvd with tin' W S. S. Wavhmntt. This acceptable contri-bution to the MusfUMi mchnled an intiTe.stin;; e«>lh'»'tion of nudlu.scan forms oblaiiH'd h\ Dr. .lones at various jjoints on the west coast of South, Central, an«l North America, and at the (Jalapajjos Islands. Thou;,'h a jjreat part of the shells were i)ick«'d up on the beaches and in pot>r comlition, yet so limitctl is our knowU-d^'e of the distributicui of west St)Uth Anu*rican species that the ctdlection has its special value for the information it furnishes upon this point. The pre|»an»tion for the exhibit of mollusksat the New Orleans lOxposition and the pressure (»f <Mirrent loutine work has been such as to «lelay the compilation of this list at an earlier da,\ . Dr. Jones collected in the Near i^^t, at the followin^' |»laces, at the dates jjiven in hi.s notes, as folh>ws : Stevens Hay, Chatham Island, (lalapapos jjroup, in August; also at Manta ant! Hahia (Hahia ranguapi), ICcuador, in the snnu^ uiiuith; at I'ayta. Peru, in SeptemlM-r: at Pacasmayo, also in Peru, in the fob h)\ving month of October. Dr. .lones <-ollceted a few species in Panama Pay and on the coast <»f Lower Calilbrnia, either in the same or scuue precedin;; year, while acting; as sur^'con of the V. S. S. Siirrn<hinsitt. Of the Pa<'asmayo shells he says : Miot «>f thi'iii won> f<Miinl in uninl on thf nidc of tlu' clilT from 10 to 20 foct above lli^h•^vnt^r iiinrk, ami but little l>cach-waMbp4l. bettif; montl.r wratlicr-wuni. The c«>IUH'tioii hIiown tlio coinii.irativn nbiimlaiu'o of the diOcrcnt i<|iorie<t. Keniit [frenh] nhrllB very Nraroe ami but few fouutl on th*< bench. Itoacb nantly, water <!'■' • vu grailually; b'-avy Hurf; clirt-* .*><» to i.Vl feet hijjb, of narnl and cobble »toU' li-^va^b(Hl); in many plaren formiu); a ii>lid rock of conj^lomerate. In numerotis instances Dr. .Jones's eolleetion carries the species to j»oiuts much farther south than heretofore ])ublished. rrocfvdiDCn NatiouAl MuMom. Vol. XtV— N'o. 6M. 307
List of shells collected on the west coast of South America, principally between latitudes 7030' S., and 8049' N., by Dr. W. H. Jones, Surgeon, U. S. Navy