14 PROCEEDINGS OF THE NATIONAL MUSEUM VOL, 120 
with that of San Quintin Bay and Morro Bay. The bottom fauna at 
Newport has a number of highly ranked species (table 2) that ap- 
parently represent extravagants from the piling fauna: Leucothoides 
pacifica, Colomastix pusilla, Jassa falcata, and both species of 
Podocerus. 
TABLE 2.—Dominant amphipods listed by rank according to their frequencies 
in Morro Bay, Newport Bay, and Bahfa de San Quintin 
Morro Bay Newport Bay Bahfa de San Quintin 
(herein) (Barnard, 1959, 1961) (Barnard, 1964) 
Corophium uenot Elasmopus rapax Ampelisca compressa 
Aoroides columbiae Acuminodeutopus Ericthonius brasiliensis 
heteruropus 
Corophium spinicorne Rudilemboides steno- Rudilemboides steno- 
propodus propodus 
Ampithoe lacertosa Ampitthoe plumulosa ! Acuminodeutopus heteru- 
ropus 
Microdeutopus schmitti Ampithoe pollex Hyale frequens (as nigra) 
Pontogeneia rostrata Leucothoides pacifica Aruga holmesi 
Corophium acherusicum Corophium acherusicum Microdeutopus schmitti 
Allorchestes angustus Corophium bacont Paraphozus obtusidens 
Heterophoxus oculatus Hyale frequens Lembos macromanus 
Ampelisca cristata Paraphozus spinosus Amphideutopus oculatus 
Photis brevipes Ericthonius brasiliensis Orchomene magdalenensis 
Synchelidium shoemakert  Colomastix pusilla Corophium uenoi 
Elasmopus rapax Amphideutopus oculatus Listriella melanica 
Ampithoe valida Corophium uenot Elasmopus rapax 
Synchelidium rectipalmum Amphilochus neapolitanus Uristes entalladurus 
Batea transversa Maera simile Corophium bacont 
Paraphoxus stenodes Microdeutopus schmitti Pontogeneia quinsana 
Pontogeneia minuta Jassa falcata Corophium acherusicum 
Ampithoe longimana Podocerus brasiliensis Paraphoxus heterocuspi- 
datus 
Corophium baconi Podocerus fulanus Ampithoe plumulosa 
1 Table 1 of Barnard (1961) entry ‘‘4’’ should read Ampithoe plumulosa not A. pollex. 
Family Ampeliscidae 
Ampelisca cristata Holmes 
Ampelisca cristata Holmes, 1908, pp. 507-508, figs. 16, 17.—Barnard, 1954a, 
pp. 26-29, pls. 17-18; 1959, p. 18. 
MaTERIAL.— Stations 10(1), 12(14), 20(5), 21(10), 22(2), 25(3). 
DiIstRIBUTION.—Caribbean Sea; eastern Pacific from Ecuador to 
Tomales Bay, Calif. 
