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 



