62 



PROCKEDINGS OF UNITED STATES NATIONAL MUSEUM. 



The distance of the veutral from the suout (.25^) slightly exceeds its 

 length. Tiie ventral extends to a vertical through the anterior part of 

 the first dorsal. 



Radial formula: B. VI; D. IV-V, 13-14; A. 12-13; C. 16-18; V. 6. 

 L. lat. ca. 113. 



The lateral line begins about the middle of the operculum, ascends 

 backward to near the upper outline of the body, under the anterior half 

 of the first dorsal, follows the upx^er outline close to the bases of the 

 rays as far as the end of the second dorsal, from which point it curves 

 downward to the origin of the middle caudal rays, and thence follows 

 the origin of the bases of the lower caudal rays. 



Color. — Astroscopus anoplus is minutely spotted with white on the 

 upper parts. 



XOTE. — In the measurement tables the unit of comparison is the length 

 to the origin of the middle caudal rays. 



Table of Measurements. 



Species, Astroscopus anoplus. 



Current nnmber of specimen. 

 Locality 



Extreme length 



Length to origin of middle caudal rays 



Body : 



ileight at first dorsal. . -■ 



Greatest width 



Height at vcutrals 



Least height of tail 



Length of caudal peduncle 



Head : 



Greatest length 



Length of occipital depression 



Width of occijiital depression 



Greatest width 



Widtli of iuterorbital area 



Length of snout 



Length of operculum 



Length of maxilLiry 



Length of mandible 



Distance from snout to centre of orbit. 



Diameter of orbit 



Dorsal (spinous*: 



Distance from .snout 



Lengtli of base 



Length of first spine 



Length of second spine 



Length of last spine 



Dorsal (soft): 



Length of base 



Length of first ray 



Length of longest' ray 



Length of last ray 



Anal : 



Distance from snout 



Length of base 



Length of first ray 



Lengtli of longest ray 



Length of last ray..l 



Caudal :" 



Length of middle rays 



TompkinsviUe, 

 N.T. 



Milli- 

 metres. 



112 

 91 



100th s 



of 

 length. 



"Guttatus," 



4,622 a. 

 Norfolk, Va. 



MilU- 

 metres. 



273 

 221 



lOOths 



of 

 length. 



31 

 11 



4 



13- 

 17 

 22 



9 



3 



36 

 12 



6 



6 



Ih 



30 



6 

 16 



5 



60 



33 



4 



13 



23 



''Guttatus,^' 



4,622 6. 

 Norfolk, Va. 



MiUi- 

 metres. 



275 

 220 



lOOths 



of 

 length. 



31 



254 



27' 



11 



11 



39 



32 

 lU 



4 

 13 

 16J 

 23 



9 



3i 



38 



12 



6 



30 



6i 

 16i 



5 



62 



30 



5 



14 



24i 



Aver- 

 ages. 



lOOths 



cf 

 lengtli. , 



29 

 24J 

 27 

 11 



39 



?} 



31 

 11 



4 

 13 

 17 

 23 



9 



^ 



37 



12 



6 



30 

 6 

 16f. 



5 



60 

 31 

 4 

 14 



23i 



' Broken. 



