NEW WHITEFISHES. 5 
An examination of a few stomachs revealed nothing. 
Forty specimens show a range in size from 162 to 180 millimeters in total length, and, unless the 
scale markings are wrongly interpreted, the ages of these examples are 4 and 5 years. 
The species differs from others of the genus in the possession of a slender head with a long, sharply 
pointed snout, and a narrow maxillary which is entirely in front of the eye. The cisco does not resemble 
any other whitefish of the basin, and it will not be confused with any of them by the casual observer. 
Type No. 83498, United States National Museum. Locality, Bear Lake, near Fish Haven, Idaho. 
Length 173 millimeters. Collectors, J. O. Snyder and C. L. Hubbs. 
Head 4.4 in length to base of caudal; depth 5.6; depth caudal peduncle 3.8 in head; snout 3.2; 
eye 4.5; interorbital area 4.5; maxillary 3.4; scales lateral series 71; between occiput and dorsal 29; 
above lateral line 8; below lateral line 7; dorsal rays 11; anal rays 12. 
Body elongate and slender, the head pointed; eye large; maxillary entirely in front of eye; no 
teeth; gill rakers long and slender, 14 to 27 on first arch; cxca 85; fins short, caudal lobe pointed, adipose 
small, Color dusky above, silvery on the sides; no spots. 
Leucichthysigemmifer. Bonneville cisco. 
MEASUREMENTS OF TEN EXAMPLES OF LEUCICHTHYS GEMMIFER. 
Length of body..................mm.. 149 157 157 149 I4t 14t 155 143 146 142 
és é é oi é 9 Q g 23 2 
Length head........ OOM x Peat ere 0-245 | 0.24 O- 24 O- 24 0.25 ©. 25 0.2 0. 25 0. 24 0.25 
Depth body......... : +2r +19 195 195 215 24 25 23 +23 +225 
Depth caudal peduncle. . +07 +067 o7 065 +07 °7 065 065 07 06 
Length caudal peduncle 155 15 16 165 165 15 16 155 155 +165 
Length snout......... +07 075 °7 0°75 09 08 075 075 075 085 
Length maxillary +065 075 075 °7 078 075 +075 o7 072 0°75 
Diameter eye...... +053 +055 +05 +055 +058 +055 +055 +057 +052 +05 
Interorbital width +053 1-053 055] «055 055 | +055 05 053 | +055 55 
Depth head....... 13 +13 13 14 +14 +14 14 14 14 Aer 
Snout to occiput 175 175 18 175 +20 «185 185 19 18 +185 
Snout to dorsal. . +48 +50 48 47 +51 +48 +49 49 +47 +48 
Snout to ventral... 55 58 54 56 +56 555 575 55 555 555 
Length base of dorsal. 10 095 095 09 +092 II 09 +10 105 To 
Length base of anal... +095 095 09 10 +095 +10 °9 095 10 095 
Height dorsal. 125 12 12, 12 +125 +13 125 TI5 12 12 
Height anal... +095 +095 99 09 +09 -10 095 09 29 10 
Length pectora! +10 145 155 145 +16 15 15 14 15 15 
Length ventral 12 115 12 115 12 115 12 115 +115 TI5 
Length caudal... 20 19 175 19 20 20 20 18 20 20 
Marsal rays; shew aaieh » Lsieeields » abies -nalaniste> os 10 11 11 II 9 Ir II I II 
TODA A Ee eR RPO NU SIAL II Ir II 12 12 12 II 12 12 
Scales'lateralline: 00s. 666. o iets ' 17 73 71 71 | 72 | 72 73 73 | 74 92 
Scales above lateral lime... .......-.:-0+005s 8 8 9 9 8 | 8 8 8 8 8 
Scales below lateralline.................00. 7 7 7\ 7 7 7 7 , 7 7 
Scales before dorsal... 22... .6.cee eevee even 30 31 32 31 29 29 30 30 31 29 
The color soon fades after death. An alcoholic specimen is brown to a point two scales above 
the lateral line, from where it is silvery to the midventral surface. Along the back the scales are 
dusky. The snout is black on the upper anterior half. The fins are without color. 
The intestinal canal is short and straight. There are 84 to 86 cxca just beyond the pyloris, the 
posterior ro or 12 extending in a single row along the intestine. The gill rakers are longest near the 
center of the arch, about one-half the length of the maxillary. They number 14 to 16+270r 28. Bran- 
