STRUHSAKER: ARG YRIPNUS BROCKl NEW SPECIES 



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36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 

 II I I I I I I I I I I I I I I I I I I 



37 39 41 43 45 47 49 5 1 53 55 57 59 6 1 63 65 67 69 7| 73 75 



STANDARD LENGTH (mm) 



76 78 80 

 I I I 



77 79 81 



83 85 87 



88 90 

 I I 



89 91 



Figure 3. — Length-frequency distributions for 123 specimens of Argyripniis brocki 



and 294 specimens of A. ephippiatiis. 



additional stations (2-8 specimens per station), 

 all in the 325- to 450-m depth range. 



Measurements obtained from the 15 speci- 

 mens are given in Table 3, while some of the 

 counts (supplemented by randomly selected 

 individuals from the same stations) are sum- 

 marized in Table 1. The length-frequency dis- 

 tribution for 294 specimens is given in Figure 3. 

 As in the case of A. brocki, A. ephippiatus 

 females longer than 65-70 mm seem to be 

 mature. 



Gill rakers on the first arch: 5/5 + 13/13(2), 

 5/5 + 13/14(4), 5/5 + 14/14(20), 5/5 + 

 14/15(2), 6/5 + 14/14(2). Pelvic rays: 7(13). 

 Caudal rays (primary): 10 superior and 9 

 inferior (9). Branchiostegals: 7 + 3 = 10(15). 



ORB: 1/1(15). OP: 3/3(15). BR: 6/6(15). 

 IV series — IP: 6/6(12), PV: 10/10(12). OA: 

 7/7(15). Middle AC: 4/4(1), 5/5(28). Posterior 

 AC: 12-14: (Table 1). There was no obvious 

 relation between specimen size and number of 

 posterior AC photophores. The number of VAV 

 + anterior AC photophores (18-22) also in- 

 creases with growth in A. cpliippiatus, although 



the variation within the observed size range is 

 not as pronounced as for A. brocki. The linear 

 regression coefficient obtained for the photo- 

 phore-SL relations for 47 specimens of A. 

 ephippiatuf< (Figure 2) is significant (P <0.01, 

 but r~ is only 0.145). 



Total vertebrae for 18 specimens ranged 

 from 44 to 45: 14 precaudal -f- 30 caudal, 2 

 specimens; 15 + 29, 14 specimens; 15 + 30, 

 2 specimens. 



ARGYRIPNUS IRIDESCENS 

 McCULLOCH 



I have examined nine specimens of McCul- 

 loch's type series deposited in The Australian 

 Museum. Each specimen is individually tagged, 

 and the measurements I obtained from them 

 are given in Table 4. Some of the counts are 

 summarized in Table 2. 



Gill rakers: 6/6 + 14/15(1), 6/6 + 15/15(6), 

 7/7 + 15/15(1). 6/6 + 15/16(1). Pelvic rays: 

 7(9). Caudal rays: 10 superior, 9 inferior (9). 

 Branchiostegal rays: 7 + 3 = 10(9). 



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