FISHES OF SACRAMENTO-SAN JOAQUIN BASIN. 131 
The number of rays in the dorsal is uniformly 10 in the 21 specimens examined; 20 have the anal 
with 9 rays, and one with 8; teeth 2, 5-5, 2 in all specimens examined. The following is a statement 
of the number of scales in the lateral line: 
. Specimens. Specimens, 
Pee PG pletion aig 5 een Gone Benen aCe eR eS Oi SOR ECALORS . os oe ot tet e aca rea Beets Oe ewan’ 3 
DT) GAGS eens SS ogo. Sekt co socbe see esoses 2 | 60 scales 6 
Dab) SALE ree ele ee etter Uninet ania s cw'ele='= RO LNECRICH Sn. aaet a) orien ee Sore inet aie oe alanine a ne 1 
There are 11 or 12 scales above the lateral line and 6 or 7 below. 
One of the most abundant fishes of the lower rivers and in Suisun Bay. At Battle Creek fishery it 
feeds on the waste eggs from the spawning platform and from the hatchery. It is also very destructive 
to salmon eggs on the spawning beds. As many as 50 split-tails may be seen following a spawning salmon. 
There is no doubt that it also destroys great numbers of salmon alevins. 
This species is one of the few minnows that enter brackish water, being very abundant in Suisun 
Bay, and occasionally taken in San Pablo Bay in nearly pure sea water. 
Loca DistriBuTtion. 
Locality. Stream or lake. Collector. Name as reported. Authority. 
| 
| (Pek 0a2': Srthsene Sane se te Leuciscus macrolepi- Ayres 1854a. 
San Mranciseosw. -/cos-ceee. sas seae aeons ones coccecssss | dotus. 
| |(\Lockington........... Pogonichthys inw- Loekington. 
quilobus. 
oth Se eC SCR COe Re ee Sea (2) P. macrolepidotus.... Jordan & Jouy. 
(irra (eee See eee eae eee di es & Chamber- |..... oven see. seasons 
ain. 
RortReading. <2; ----....250-2|2.2-< Newberry.-----<------ P. ineequilobus....._- Girard 1857. 
United States hatchery... Rutter & Scofield. .__- P. macrolepidotus. -_- 
HG Liss bie Se Sa eee d d 
6 miles below Red Bluff. 
Mehama.n-.-..-2-3.2--- 
Chico Bridge ........ 
AUST = GR. ene Ses 
‘Grimes... <--2- 
20 miles below Grimes - 
Knights Landing............--|-...- : 
Jordan & Gilbert... Jordan & Gilbert. 
Mouth of Feather River-...... | Sacramento River....| Rutter & Scofield. .... 
Oroville o6 Se oo ee | Feather River........ ae & Chamber- 
jain. 
Sacramento: ~~. 2-02 ¢sssc---- = Sacramento River....| Rutter & Scofield.....)..... Oma eset ea aeeae ee 
LOE eee Se ee meme eae American River... .-.. Rutter & Chamber- }..... GE oe asesee ee 
ain. 
RVG) ee ceecce sce. Sacramento River-....!.._-- GOnanssee 
Rio Vista... do... do. 
Collinsville. pel! eee ae eer doe 
12 (ci fe eee eee -| Carquinez Straits....|..... do. 
Black Diamond. ... .| Suisun Bay-......-...- REtER ee hacer cee 
JOGO ee SRR RS oe Cs See | San Joaquin River. - .| suber & Chamber- 
| ain. 
WivinPstOneseseneoce asst ea Merced River.......-. Rutter & Atkinson...|..... GO;- 552-2 eon 
Pollasky 4 | = 
Fort Miller di Girard 1854 & 1856. 
11. Ptychocheilus grandis (Ayres). Sacramento Pike. 
Gila gracilis Ayres, Daily Placer Times and Transcript, 1854, May 30, San Francisco. . 
Gila grandis Ayres, Proc. Cal. Ac. Nat. Sei. 1854, p. 18, San Francisco. 
Ptychocheilus major, Agassiz, Am. Jour. Sci. Arts 1855, p. 279, San Francisco. 
Ptychocheilus harfordi Jordan & Gilbert, Proc. U. S. Nat. Mus. 1881, p. 72, Sacramento River. 
Ptychocheilus oregonensis (Richardson), Jordan & Evermann, Fishes of North & Mid. Amer., pt. I, p, 224, 1896. 
Ptychocheilus grandis (Ayres) Jordan & Evermann, op. cit., pt. 11, p. 2796, 1898. 
Head 3.7 inlength; depth 5.5; eye 6.3 in head; interorbital 3.8; snout 2.9; depth of caudal peduncle 
3.1 in head; dorsal 9, anal 9, pectoral 15, ventral 10; scales 14—73-7; teeth 2.5-4.2. (Measurements 
on a specimen 184 mm. long from Pollasky.) 
