IDS 



CALll'OUNIA ACADEMY OF SCIENCES 



111 nine specimens from Mazntlan (iiu'liuliii'^ the type of 1\ sinnlod), tlie j;ill- 

 nikors on liorizontal linil> of an-li arc constantly thiitiuMi or fourteen in nnmher, and 

 tlie fill ravs as fnllnws: 



Dorsal., 

 Anal ... 



76 



61 



The longest gill-raker in /'. woolmanni is two-fifths to one-third as long as the 

 diameter of the eye; on the vertical limb of the arch 4 or "> are usually |)rcseiit, 1 or 

 'J of which may he immovable and rudimentary. 



In the northorii portion of its range, P. woolmanni isaccomjianied by the closely 

 related P. cestuarius, which differs in its more elongate form, the longer, more numerous 

 gill-rakers, the more numerous fin-rays, and the lighter, more nearly uniform coloration; 

 a row of distinct small white spots follows the contour of the body, near the base of 

 the vertical fins. P. maydalewn Abbott (Jordan & Evermann, 1898, j). 2871), is a 

 synonym of P. (estuarins. We have compared the types of the two species. 



Measurements in Hundredths of Length without Caudal. 



Locality . 



Total length in mm 



Length to base of caudal in mm 



Head (without opercular membrane)... 



Snout (to upper eye) 



Ma.xillary 



Upper eye 



Interorbital width (total) 



Greatest depth 



Depth of caudal peduncle 



Longest gill-raker 



Length of caudal 



Length of ventral 



Length of pectoral 



Longest dorsal ray 



Longest anal ray 



Chord of arch of lateral line 



Panama 



272 



219 



28i 



6t 



14 



5 



2i 



45 

 12 



14 

 13 



13 



270 

 219 



29i 



6+ 



14+ 



5+ 



2i 



46i 



12 + 



23i 



9 



i4i 

 13 

 13 

 i5i 



Guaymas, 

 Mex. 



260 

 208 

 30J 

 7 



15 

 5i 



2k 



47i 

 12J 



2i 



24 

 14 



I2i 



12 



15 



