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22 ee ee GAS an ates ee Pie igs “Spi Rea os ils il a rn i STE Sc REE ADS >, ¥ ahs Oe 
epee Se eennee ey Be Se OER eee eae Se es Re Ae aes "on Se a 
Gasterosteidae. 
Gasterosteus cataphractus (Pallas). ~uae 
7 
' 
Six from Oregon. Length 45 to 52 mm These show the 
lateral plates quite variable, example 235, and in 
each of the others 5 to 10, 
é " She 
oyngenathus ee Oe Ce ol 
a 
Head 2 1/3:to 3 1/8 to vent; depth S to 4; D. 25 to 31; 
‘ZZ €) oOry7 
A. of Pings 17, once 18. - 32 or oo, Once 27; snout 1 7/8 to 
21/3 in head from upper jaw tip; eye 2: to 3 in snout; 
toral 21/5 to 3; caudal 12 to 23; interorbital 1 to 12. 
Body well compressed; upper keel each side of back to 
last fourth to sixth in dorse neth oh splaced 
below by similar parallel or uppe 
about first fifth to fourth in dorsal fin length; 
laterel keel from pectoral axil midway slong 
opposite where caudal keel begins; median ventral 
complete from breast to vent; lower lsteral keel 
Side from head to caudal fin uninterrupted. Head 
S$ length; upper profile concave. Snout 
as rest of head, much shorter in younrc. Bye modera’ 
in young, also supraorbital ke Mouth terminally 
