﻿526 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 102 



ECSENIUS HAWAIIENSIS, new species 



FiGtJEE 96 



Bolotype.—U.S.NM. No. 112293, Oahu Island, Pearl Harbor, from 

 a drydock, "hauled from Guam about a year ago and left standing," 

 April 1950, collected by Spencer Tinker, standard length 66 mm. 



Paratypes. — U.S.N.M. No. 112294, taken with holotype and bearing 

 same data, 12 specimens, 48 to 70 mm. 



DescripfAon. — In addition to the counts recorded in table 1, the 

 pelvics were always 1,3 ; none of the caudal fin rays is branched. 



Certain measurements were made on the holotype and two paratypes 

 and these data are recorded in table 2. 



Table 2. — Measurements on certain species of Ecsenius, recorded in thousandths 



of the standard length 



Characters 



Standard length in mm 



Head, tip of snout to front of upper 



lip 



Total length of head - 



Greatest depth 



Least depth of body .- , 



Postorbital length of head 



Eye... 



Snout 



Interorbi tal space (flesh y) 



Length of posterior nasal cirrus 



Longest fin ray: 



Dorsal spine 



Dorsal soft ray 



Anal 



Pectoral.. 



Pelvic - 



Caudal... 



Snout tip to anus 



Snout tip to dorsal origin 



Length of anal fin base 



opsifrontalis 



Holo- 

 type 



255 

 281 

 197 

 97 

 181 

 77 

 74 

 31 

 39 



158 

 177 

 126 

 242 

 226 

 232 

 558 

 268 

 355 



Para- 

 type 



26.3 



266 

 278 

 209 



95 

 182 



80 



76 



34 



38 



141 

 145 

 126 

 236 

 198 

 240 

 559 

 285 

 327 



stigmatwa 



Holo- 

 type 



46.5 



249 

 262 

 215 

 105 

 178 



69 



67 



32 



49 



114 

 142 

 118 

 183 

 110 

 221 

 542 

 236 

 380 



Paratypes 



37 



251 

 273 

 224 

 116 



184 

 81 

 73 

 30 

 65 



135 

 119 

 122 

 184 

 132 

 249 

 552 

 257 

 386 



36.2 



263 

 279 

 248 

 111 

 180 



83 



72 



33 



a3 



146 

 163 

 105 

 191 

 122 

 265 

 530 

 248 

 378 



hawaiiensit 



Holo- 

 type 



66 



227 

 242 

 207 

 112 

 166 

 59 

 77 



121 

 189 

 118 

 151 

 103 

 313 

 508 

 212 

 484 



Paratypes 



66.7 



220 

 234 

 202 

 111 

 157 



68 



73 



30 



60 



136 

 165 

 112 

 145 

 84 

 331 

 487 

 210 

 408 



4S 



227 

 240 

 217 

 104 

 161 

 71 

 67 

 33 



150 

 133 

 126 

 133 

 110 

 202 

 516 

 219 

 406 



Head 4.0 to 4.2 ; greatest depth 4.5 to 4.8 ; longest pectoral ray 6.1 

 to 6.3; snout tip (upper lip) to anus 2.1; anal fin base 2.3 to 2.4; all 

 in the standard length. Eye 3.5 to 4.0; snout 3.1 to 3.4; postorbital 

 length of head 1.4 to 1.5 ; greatest depth of body 1.2 to 1.3 ; least depth 

 of body 2.2 to 2,5 ; longest pectoral ray 1.5 to 1.6 ; longest dorsal spine 

 1.7 to 1.8; all in the length of head from tip of upper lip to rear 

 of gill cover. Fleshy interorbital space 1.8 to 2.0 in eye. 



No orbital cirrus; no nuchal cirrus; a single, simple nasal cirrus 

 arises on upper edge of anterior nasal opening, and a shorter cirrus, 

 sometimes bifid to base, arises on lower edge of nasal opening ; snout 



