16 BULLETIN OF THE BUREAU OF FISHERIES. 
TABLE SHOWING THE DISTRIBUTION OF SpEcrEsS—Continued. 
& 
Agosia klamathensis Evermann || 
Rutilus symmetricus (Baird & 
cataphractus 
(Pallas). 
Hysterocarpus traski Gibbons. 
Locality. 
Girard.) 
cies 
& Meek. 
Agosia falcata Eigenmann 
Rutiius bicolor (Girard). 
Eigenmann. 
mann & EKigenmann. 
Gasterosteus 
Columbia transmontana Bigen- 
Coregonus williamsoni Girard. 
Cottus klamathensis Gilbert. 
Cottus rhotheus Rosa Smith. 
| Rhinichthys evermanni, new spe- | 
THybopsis crameri, new species. 
| Rhinichthys dulcis (Girard). 
Agosia nubila (Girard). 
| Cottus asper Richardson, 
Cottus gulosus (Girard). 
Cottus aleuticus Gilbert. 
Sacramento River fauna. | | 
Redwood Creek, Orick - 
MadsRiver: 2 ----e=-— = 
Meaple(Creakes. 222.522 2 Ses eso eee cee 
ittleVRivers apes asses ene tae r ee a ite 
Mlk River -2------ ye E al eases | 
Van Duzen Creek alee A bade Geel beeches 
‘South Fork Eel River near Garberville- - - =| ee a Pee ese 
South Fork Eel River, Garberville...-..- =| (45 A Beeel pee 
SP AW Creeks te. eee eee ea eee BP eral eee ees) Ne 
Bear River, Capetown... - BSA SSSA bAesl becs| Kea-| Hae 
Mattole River near mouth a Rese Peso Seer eee peice boc 
Mattole River, White Thorn.-..---.-...- oH sel oc Bea ee 
Usa Creeks ese ee eee eee e|beaa| eae ates |ee 
mien MilesRivenie soo sence enna 
Noy OsRiivenssssees ene esse eee 
iapPyBhcrn oe fecosceRaaacsabacecmacses 
South Fork Big River-....-.---------- 
TA DionMR versa eae eee 
Navarro River near mouth. .-..-.....- 
Navarro River near Philo.......----- 
Navarro River near Boonville... .---- 
Allder/Creek soe ee sees see eee 
Garcia River near mouth.-.....----- 
Garcia River 5 miles from mouth. 
Garcia River 10 miles from mouth 
Gualala River at North Fork.---- 
Gualala River at Wheatfield Fork - - ee 
WiheatheldHork; (Gualalacsse: a2 2 eee eee 
Russian River system: 
Roberts Oreekepee: sepsis bse eee 
Russian River, Ukiah......-- 
Warm Springs Creek 
Dry Creek, Skaggs Springs. - - 
Dry Creek, Healdsburg. ------ 
Russian River, Healdsburg - 
Knights Valley Creek. ---.--- 
Napa River, Rutherford. --- 
Napa River, Calistoga. --- 
Conn) Creek: set a eae eee eee 
‘xxx! Xxx 
' xXx xX 
ipo oo 
‘xx! Xxx! 
x! 
XXX! KKK! KK KKKKKK KKK KKK KKK KK X | 
xx! x! x! 
SYSTEMATIC DISCUSSION OF SPECIES, 
The proportional measurements“ recorded in the following pages are expressed 
in hundredths of the length from the tip of the snout to the base of the caudal fin. 
The tables are intended to record something of the degree of differentiation . 
which has arisen between closely allied forms. They will also serve to indicate the 
individual variation of certain characters as well as it may be shown by the exami- 
nation of a small series of specimens. 
1. Entosphenus tridentatus (Gairdner). 
Young examples of this species were occasionally found in quiet pools, buried several inches in the 
soft sand and mud. Specimens were taken in the Willamette, Nestucca, Umpqua, Coquille, Rogue, 
Klamath, Eel, Garcia, Big, Russian, and Napa rivers. 
a The method of measuring here adopted is explained in Snyder, Bulletin U. S. Bureau Fisheries, vol. xxvu1, 1907, page 79. 
