NO. 8 WADE : NEW FISHES OF THE EASTERN PACIFIC 223 



Parella ginsburgi, new species 

 Plate 31 



Holotype.—AHF no. 923. 



Type locality. — Balboa, Panama Canal 'Zone, Republic of Panama, 

 shore collecting, January 11, 1933. 



Aleasurements of holotype in mm. — Standard length 41.5, total 

 length 59.9, caudal length 18.4, pectoral length 12.2, head 10.5, head 

 width 7, head depth 6.9, eye 3, snout 2.25, maxillary 6.4, interorbita'l 

 0.35, predorsal length 13. 



Diagnosis. — Dorsal VII — 12, anal 12, pectoral 20, caudal 17. Depth 

 6.8 in standard length, head 3.95. Predorsal length 3.2 in standard 

 length, caudal fin 2.25. Snout 6.5 in head, eye 3.5, maxillary 1.69. Head 

 width 5.93 in standard length, depth 6.2. Scales 30-32 along mid-line of 

 sides. Predorsal area scaled along dorsal mid-line, abdomen scaled. 



Description. — Body slender, rounded anteriorly, compressed pos- 

 teriorly. Greatest depth of body 6.8 in standard length (16.1%). 

 Dorsal and ventral outline bluntly rounded anteriorly, tapering gradually 

 to caudal base. 



Dorsal VII — 12. First dorsal of seven moderately elongate, flexible 

 spines. Fifth spine reaching to origin of second dorsal when depressed. 

 Origin of spinous dorsal behind pectoral base, predorsal length 3.2 in 

 standard length (31.4%). No ridge or crest along predorsal mid-line. 

 Anal fin 12, origin under second dorsal ray. Caudal fin long and pointed, 

 17 articulated rays, 2.25 in standard length (44.4%). Pectoral rays 20, 

 end of fin reaching a vertical from third dorsal ray. Ventral fins united, 

 free from abdomen, interspinal membrane well developed. End of fin 

 almost reaching vent. 



Scales large, between 30-32 in a lateral series. Most of scales absent 

 in the single specimen examined and their description may have to be 

 revised when other specimens become available. Predorsal area scaled 

 with small, crowded scales extending forward along the dorsal mid-line 

 to the posterior part of the head. Lateral body scales not approaching 

 close behind base of pectoral fin, extending anteriorly to a vertical from 

 origin of spinous dorsal. Abdomen scaled with small, crowded scales 

 along ventral mid-line. Breast and pectoral base naked. Head naked 

 except for posterior scales along dorsal mid-line. 



