1921] Schmitt: The Marine Decapod Crustacea of California 293 
species known or reported from the region investigated were found, 
all shore collecting, including seine hauls, was unfortunately confined 
to the middle bay. No doubt many, if not all the forms so taken are 
to be found along the ocean beaches outside. At least one of the 
dredged species, Pandalus danae, is known to be plentiful outside 
though taken by us only in the bay. Moreover, nearly a fourth, eleven 
(24%), of the species were taken but once during the survey: 
Crago resima Acantholithodes hispidus 
Crago alba Randallia ornata 
Crago communis Oregonia gracilis 
Pagurus samuelis Pinmaa littoralis 
Pylopagurus minimus Scleroplax granulata 
Holopagurus pilosus 
Those taken at more than ten stations are in no greater number, 
comprising, likewise, less than a fourth (24%) of the species. Only 
the first five of these were obtained from about one fourth of the total 
number of dredging stations. Arranged in order of the number of 
stations, dredging and hydrographic, at which each was taken, they 
are as follows: Number of stations 
1D), H. Total 
CAG OMAEOMCUS CONT rere ees 94 113%%/ 231 
CRAG OMNUGTLCAULG Mare ee ee 103 69 172 
SSQUROIOUOGAROS  CUUSTHONRD « eee ee 35 28 63 
CONCETMMAGISUCI Near ea ee A ee es 57 1 58 
ORAS OBS VOUT OST US H  mctes er ono cca 40 3 43 
TLE MUGRAPSUS MOTCGONENUSUS sores reece eee 19 1 20 
CRAG OMG TOM. ACULCT rere ee eer 19 ace 19 
Callianassam@iongunana! = ee 16 2 18 
CONCCTENDT. OGUGUILS) pare na net ener ee ae ae 16 Ask 16 
CONCCTIEGI CCU IS Wer ee eee ee ee 14 a 14 
OGUTUS RUT SULUULSC WLS erences noe 13 ae 13 
However, with respect to their local distribution the survey species 
belong to three groups: (1) those taken only outside; (2) those taken 
only in the bay; and (3) those taken both in the bay and outside. 
1. The species taken only outside are sixteen (35%) in number, 
as follows: 
Pandalus jordani Paguristes bakeri 
Spirontocaris gracilis Holopagurus pilosus 
Crago alaskensis elongata Pagurus ochotensis 
Crago communis Pylopagurus minimus 
Crago alba Acantholithodes hispidus 
Crago resima Randallia ornata 
Crago spinosissima Oregonia gracilis 
Paguristes turgidus Pinnixa occidentalis 
