FISHES FROM ECUADOR AND PERU— STARK'S. 



791 



62. POMADASIS BURRO, new species. 

 Phitc LX^^ tiii-. .'3. 



Head, 2| to 2i in length to Itase of caudal; depth, 2f. Kye, ;"> to 5^ 

 in head; snout, 2i; maxillary, 3it to 3i; interorbital space, -tf ; fourth 

 dorsal spine, 3 to 3^; second anal spine, 2f. Dorsal, XI. 1. 13; anal, 

 III, 8. Scales, 47. 



Upper anterior profile concave above eyes; that of snout straight 

 and long-. Edge of preopercle witiiout trace of serrations; opercle 

 with a broad dermal flap. Maxillary reaching to or slightly behind 

 the vei'tical from anterior nostril. Lips thick and spongy; lower jaw 

 a little projecting, (xill rakers i-ather thick, one-fourth of diameter 

 of e3'e; 15 developed on anterior limb of arch. 



Pectoral reaching to opposite vent; vtMitrals three-fourths or dis- 

 tance from their l)ase to vent. Second anal spine a little shorter than 

 soft rays, near its tip it tapers quickh" to a point that is not very acute. 



This Species has the general characters of P. iiiaeravanthns^ ]>ut 

 ditfers in having no serrations on edge of preopercle, in having shorter 

 dorsal spines, a slightl}' shorter and much more slender second anal 

 spine, and the head and maxillar}' longer. 



We have numerous specimens of P. maerdeanthus from Mexico and 

 Panama in the Stanford Univei'sity collections for comparison; the 

 largest equal in size to the larger specimen of P. hiirro. All of them 

 have the preopercle sharply denticidated, the large ones showing no 

 d(^crease in the size or sharpness of the denticulations. 



Two specimens were collected at (yuayaquil, 26 and 31 cm. in length. 

 The larger one is the type and is Cat. No. 53168, U. S. National 

 Museum. The cotj^pe is in Stanford University museum. 



Burro, the vernacular name in Central and South America of differ- 

 ent species of Pohtadnsls. They make a noise when caught resembling 

 the noise made by a "burro" or donkey. 



Table of nwaxurfmenti^ in Imndri'dtJifi of Inigtli. 



Pomadanis 

 burro. 



Pomadasis m acracan th m.< 



Localit V Guiiyaquil. 



Panama. 



Mazat- 



lan, 

 Mexico. 



Guayma.s, 

 Mexico. 



Length in millimeter.s to base of <-audal. 



Length of head in hundredths 



Depth of body 



Length of snout 



Diameter of eye 



Interorbital width 



Length of maxillary 



Length of fourth dorsal spine 



Length of second anal spine 



Length of pectoral .-. 



Length of ventral 



215 

 42 

 37 

 14 



8 



9 



12^ 

 16 

 16i 

 29 



260 

 41 



38 

 14 

 7i 

 9 



12i 

 14 

 15 

 30 

 22 



214 

 37 

 38 

 12 



7^ 



11 



17 

 18 

 33 

 21 



200 

 38 

 30 

 14 



