350 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



ten, the smallest nearest to tbe symphysis. The long tentacles at the 

 angles of the mouth are fringed and extend to the base of the pecto- 

 rals. In other respects Giinther's description of P. hrevirostre is ample 

 for this species. 



Color bright crimson. 



Radial formula: D. VII, L8; A. 17; C. 16; P. 2 + 10; V. 6. L. hit. 

 27 on one side, 28 on the other. 



Three other specimens had the following: D. VIII, 18; A. 17. D. 

 VII, 18; A. 18. D. VII, 18; A. 18. 



The measurements of adult and young specimens are given. The fish 

 when taken seemed to be in the height of the spawning season. 



Current number of specimen 

 Locality 



26,023. 



26,030. 

 871 (young). 



Milli- 

 meters. 



lOOths of 

 length. 



MiUi- 

 meters. 



lOOths of 

 length. 



Extreme length 



Length to end of middle caudal rays 



Lodv : 



Greatest height at origin of dorsal 



Greatest width under pectorals 



Height at veutrals 



Least height of tail 



Head : 



Greatest length 



Distance from snout to nape 



Greatest width . . .. 



Width of intcrorhital area 



Length of snout ■ 



Length of operculum 



Lertgth of maxillary 



Length of mandible 



Distance from snout to orbit 



Diameter of orbit, longitudinal 



Width of mouth-openiug 



End of frontal spine to symphysis of m<nxinaries . 



Length of barbels 



Dorsal (spinous) : 



Distance from snout 



Length of base 



Greatest height, second spine 



Height at first spine 



Height at last spine 



Width of upper surface of occipital plate 



Length of upper surface of occipital plate . . . 



Width of upper suiface of nexal plate 



Length of upper surface of nexal plato 



Anal : 



Distance from snout 



Length of base 



Height at first spine 



Height at second spine 



Height at third spine 



Height at last spine 



Caudal : 



Length of middle rays 



Length of external rays 



Pectoral : 



Distance from snout 



Length 



Ventral : 



Distance from snout * 



Distance from symphysis of mandibles 



Length 



Isthmus 



Dorsal 



Anal 



300 

 272 



Caudal ., 



Pectoral 



Ventral 



Number of plates in lateral line 



From anterior edge of frontal plate to end of frontal spine. 



100 



19.50 

 20 



19.50 

 2.75 



40.50 

 32.75 

 29 



6.75 

 22.50 

 10 

 12 



12.50 

 21 



6.50 

 12 



7 

 29 



38.25 

 53.50 

 10.75 

 10 



3 



7 



4.75 



6.50 



5 



53.50 

 36 



3.50 



6.50 



8 



4 



9.50 

 5 



33 

 18.25 



31 



37.25 

 17.50 

 15. 50 

 VII, 18 

 18 

 16 

 2+10 



6 

 28 



9.50 



100 



19 

 15 

 18 

 3 



39 

 36 

 30 

 12 



18 



14.50 

 13 

 19 

 10 

 13 

 

 10 



40 



53.50 

 10.75 

 10 



6 

 12.50 



8 



0.25 



3 



51 



40 



3 



34 

 14 



30 

 40 

 20 



15 • 

 VII, 18 

 18 



