FAMILY POMACENTRIDAE — WOODS AND SCHULTZ 



73 



Table 85. — Measurements, in thousandths of the standard length, for three species 



of Chromis 



Character 



Standard length in mm. 



Depth of body 



Length of head 



Length of snout 



Diameter of eye 



Least preorbital width,.. 



Length of upper Jaw 



Postorbital part of head. 



Interorbital width 



Least depth of caudal 



peduncle 



Length of pectoral fin 



Length of pelvic fin 



Length of 3rd to 6th dor- 

 sal spines 



Length of upper caudal 



rays 



Length of lower caudal 



rays 



Length of caudal pe- 

 duncle .- 



leticurus 

 (Bikini Atoll) 



fiO. 5 

 590 

 297 



73 

 104 



29 



89 

 122 

 114 



lfi4 

 345 

 306 



4S4 



184 



31 

 500 

 316 



6S 

 129 



29 

 103 

 123 

 113 



155 

 359 

 426 



206 



45. 

 542 

 310 



72 

 112 



28 

 101 

 125 

 114 



158 

 365 

 393 



627 

 568 

 190 



caeruleus (Bikini 

 Atoll) 



58.7 

 477 

 303 



83 



85 



29 

 114 

 126 



99 



131 



206 

 207 



150 



341 



310 



170 



atripectoralis 



Bikini .A.toll 



Para- 

 type 



31.1 

 462 

 309 



73 



112 

 29 

 116 

 119 

 103 



138 

 270 

 251 



132 



338 

 170 



Para- 

 type 



46.1 

 475 

 293 



76 



93 



24 

 117 

 121 



91 



143 

 209 

 256 



154 



300 



321 



182 



Para- 

 type 



52.3 

 470 

 311 



79 

 101 



36 

 122 

 127 

 105 



137 

 249 

 281 



135 



324 

 183 



nolo 

 type 



67 

 455 

 314 



87 

 100 



31 

 112 

 136 



90 



130 

 251 

 230 



149 



298 



403 



221 



Guam 



Para- 

 type 



41.5 

 458 

 313 



80 

 113 



31 

 120 

 137 

 101 



142 



265 

 251 



147 



362 



386 



222 



Description. — Dorsal fin rays XII, 12; anal 11,12; pectoral ii,15; 

 tranverse scale rows 27 or 28 from upper ecige of gill opening to base of 

 caudal rays, 3 between lateral line and origin of dorsal; upper part of 

 lateral line with 17 or 18 tubular scales; 9 between lateral line and 

 origin of anal; gill rakers 8 + 1 + 19, totaling 28. Additional counts 

 are recorded in table 87. 



Depth of body 1.9 to 2.0; length of head 3.1 to 3.2; both in standard 

 length. Snout 4.0 to 4.6; eye 2.4 to 2.8; preorbital width 10.7 to 12.4; 

 length of upper jaw 3.1 to 3.2; postorbital part of head (hind margin 

 of eye to upper edge of giU opening) 2.6 to 3.2; interorbital width 3.0 

 to 3.1; depth of caudal peduncle 1.9 to 2.0; length of pectoral fin 

 0.9 to 1.0, of pelvic fins 0.8 to 0.9, of 5th dorsal spine 1.7 to 1.9; of 

 upper caudal rays 0.5 to 0.6, of lower caudal rays 0.5 to 0.7; all in 

 length of head (tip of snout to posterior margin of opercular mem- 

 brane). Depth of caudal peduncle in its length 1.1 to 1.3, angle of 

 snout profile mth lengthwise axis of body 43 degrees. 



Teeth of jaws biserial; females with teeth of outer row enlarged, 

 widely spaced, conical, inner row smaller, conical, in 3 irregular rows 

 near median line, single row laterally; males with teeth of outer row 

 small, even, close-set, conical, inner row minute, in single row, close 



