170 BULLETIN OW 
THY 
KURA OW 
PISH DRIES, 
MiAsuruM nts ov MYLOPMARODON GCONOORPHALUA PROM MH Russian River, 
Longth of body min 
Loneth head 
Doapth body 
Hnout to dorsal 
Aout to venti 
Depth caudal pedinete 
Loneth caudal pediinote 
Length snout, - ; | 
Length mix tlhany F - 
Divinetar ave, 
Titerarbital with | 
Dapth head 
Longth base af doraal 
Hlaleht doavaal.. = 
Length base of anal. 
Haight anal ‘ 
Lengthy) peotaral.. 
Length ventral 
Length oandat, .. 
Dorsal maya 
Anal vaya 
Sovles lateral line 
owles above Jateral tine, ... 
(4 
aT 
tua | 
Way 
Ti re’) 
+215) , at 
A may 
oh ia 
On O00 
WV lt 
O85) OD 
O88 | OD 
+08 | .08 
100} a0 
W5) 
mae) 12 
ois ih 
ll att) 
Wh ny 
108 Is 
at) ni 
a8 oth 
i) S 
8 8 
(tn ek) 
Ww Ww 
Lis 
ya 
ei) Bei) ALY | 
ae 122 228 
AG At iy 
od Ah] . ob 
00 00 00 
~W oI8 1 
Oy O88 | ON 
oO 0) 00 
O48 | OMB | OMS 
10 Sat) 10 
oa ta) Ww iW 
12 U8) Us 
Ww Wh) 10 
Pati) Ww ow 
Vv ITS | UTS 
aba) 16 mat) 
eh) vehi} 27 
i) s 8 
8 s Ss 
11, Mylocheilua lateralis Agassie & Pickoring, 
SSS 
150 (72 
a7 eli} 
ne yaa 
oT ain 
oot 8 
O00 00 
18 Ww 
00 00 
OD 00 
08 06 
10 O08 
155 | 18 
mats) 15 
Pt) Is 
10 10 
ati) 1 
VW W 
ABs} 
Ae i +28 
8 8 
8 8 
7 7 
Is Is 
hia in the Mylochelles caumnus of reoont authors and is not to be confused with Leuelseus caurtnus 
Richardaon, 
The species doa not Inhabit the coashyise streams south of the Colunbia River, 
Willamette basin, 
12, Ptyehocheilus grandis (.\yros), 
No difference has been observed between specimens of this species from the Russian River and 
from the Sacramento, 
Ruasian and Napa rivers, 
Seaues ann Dorsay Rays 
Spoo= 
imens | Dorsal 
ONAMe | Pays, 
| ined, 
Putah Creek (Saoramento) ,........ a] s 
) s 
4 s 
Cache Oreek (Sacramento)... .....- a Ss 
4 s 
Cottonwood Creek (Sacramento)... 4 s 
\ s 
Warm Springs Creek (Russian ed 
River) .... a : a a Ss 
\ | s 
Soales 
above 
OP Prverocn emus GRANDIS, 
lateral | 
line, 
19 —<——-———_ 
| | Spoor | | Soales 
| imens | Dorsal above 
exam rays, | lateral 
ined, | Nine, 
Dry Creek near Healdsbung (Rus- | : 
SIAM AVON) ean sauna cues eas ast a 22 Ri) Saree 
| 2 CH Ree en 
| OW Reece Ww 
TY Raat MM 
| Ah Ww 
} 
| 
| 
18, Ptyehocheilus oregonenaia (Richanison), 
Willamette and tributaries, 
14, Ptychocheilus umpque, new species, 
Piyohookellus ongonens’s is represented in the Stuslaw and Umpqua rivers by a well marked form 
here deseribed as new, 
posterior to the oceiput, where they are minute and densely crowded, 
Head exclusive of opercular flap, 3.8 in length to base of caudal; depth 5.2; snout 3 in head; eye 6} 
interorbital space 4; maxillary 2.78; dorsal 9: anal S$: scales in lateral line 75; in series above lateral 
line 21; between occiput and dorsal 63, 
Ir differs bom P. oregonensis ty having smaller scales, especially in the region 
The form of the body is like that common to 2, oregenensis and P. grandis, long and rather slender, 
the depth about one-fourth greater than the width; depth of caudal peduncle equal to length of 
