Table 26. Correlated Counts of Anal and Dorsal Fin Rays, AO Photophores, and 

 Gill Rakers for Lampanyctodes hectoris from Near South Africa 



Anal rays 



AOp 

 5 6 



Lower rakers 



(including central raker) 



19 20 21 22 



Upper 

 rakers 



10 

 11 



27 

 5 



17 

 14 



The following body proportion of Lampanyctodes hectoris are based on 15 to 17 specimens, 

 37.5 to 61.9 mm in length. Averages are given first, followed by the range of values in 

 parentheses. 



Head length 308 (293-326): head depth (on a vertical through angle of jaw) 199 (191-208); 

 orbital diameter 90 (81-99); upper-jaw length 236 (223-251); prepectoral length 320 (302-338); 

 prepelvic length 447 (429-466); preanal length 631 (612-655); predorsal length 449 (432-466); 

 preadipose length 814 (797-828); dorsal origin to pelvic origin 191 (176-204); dorsal origin to 

 anal origin 276 (262-293); caudal peduncle length 201 (187-213); caudal peduncle depth 83 

 (76-88); dorsal base length 177 (165-187); anal base length 197 ( 180-208). 



Stenobrachius Eigenmann and Eigenmann, 1890 



Vn present, no Dn. SAO in relatively straight line, in line, or nearly so, with last VO. One 

 Pol. POj much elevated; VO level. Supracaudal and infracaudal glands present in both sexes. 



la. 



lb. 



Key to species of Stenobrachius 

 Usually 4 (3-5) VO, the V0,-2 interspace larger than the rest. Usually 4 (3-5) Pre, in even 

 curve. Numbers of SAO variable, usually counted as 3, but 2 or 4 not uncommon. Sup- 

 racaudal gland with 5-8 luminous scales; infracaudal with 7-9 scales, filling entire space. 



Body moderately robust S.leucopsarus 



Usually 5, rarely 4, VO; usually 3, rarely 4, Pre. Supracaudal luminous glands 2-4; in- 

 fracaudal glands 5-6, filling only about three-fourths of infracaudal space. Body slender, 

 elongate -S- nannochir nannochir 



Stenobrachius leucopsarus 



(Eigenmann and Eigenmann, 1890) 



Description 



D. 14 (13-15); A. 15 (14-16); P. 9 (8-10); AO 6 (5-7) + 7 (6-8), total 13 (12-14); gill rakers 5 

 (6)-^ 1 + 12 (11-13), total 18 (17-19); vertebrae 36 (35-37). 



Descriptive data, other than that in key to species, is given below in a discussion of 

 differences between S. leucopsarus and its congener S. nannochir . 



159 



