mesopterygoids, and ectopterygoids of other 

 specimens (50-112 mm. SL). Vertical limb of 

 preopercle with fine serrae in small specimens 

 (80 mm. SL or smaller), finely serrate, slightly 

 roughened, or almost smooth in specimens more 

 than 100 mm. SL; horizontal limb of preopercle 

 smooth or almost smooth ; usually a well- 

 developed spine at angle of preopercle in speci- 

 mens 80 mm. SL or smaller, spine or spinelike 

 process present or absent in specimens more than 

 100 mm. SL. Anterior part of snout and most of 

 gular region without scales ; usually one to sev- 

 eral scales present in midline of anterior part of 

 gular region; largest specimen examined (165 

 mm. SL) with a few scales on the membrane 

 covering the fourth branchiostegal ray on each 

 side (no other scales seen on branchiostegal 

 membranes of this specimen) , no scales apparent 

 on branchiostegal membranes of other specimens. 



Counts 



Frequency distributions for the following 

 counts are given in tables 2, 3, and 4. Dorsal-fin 

 rays IX, 10. Anal-fin rays III, 7. Pectoral-fin 

 rays 15 to 17. Gill rakers 10 to 12 + 25 to 28— 

 total 36 to 38, 40. Pored lateral-line scales 52 to 

 54. Sum of total number of gill rakers on anterior 

 gill arch plus number of pored lateral-line scales 

 of individual specimens 89 to 92, 94. 



(The holotype of Rhijacanthias carlsmithi, 

 USNM 84099, is a dried specimen, ca. 148 mm. 



Table 2. — Frequency distribiitions of number of pored 

 lateral-line scales in Syttiphysanodon 



(The upper number in a block represents accurate counts, 

 the lower number approximate counts ] 



"Includes holotype. 



SL. Because the dorsal- and pectoral-fin rays 

 and gill rakers were not counted with certainty 

 on this specimen, data for these counts are 

 omitted from tables 3 and 4.) 



Measurements 



Ranges of selected measurements are pre- 

 sented in percentage of standard length followed 

 by the value for the holotype of S. typus in paren- 

 theses. For some characters variation with size 

 is indicated. Length of head 27.7 to 33.5 (32.0) 

 — 32.2 to 33.5 in specimens 50 to 80 mm. SL, 

 27.7 to 32.2 in those of 105 to 165 mm. SL. Depth 

 of head 19.1 to 24.2 (21.0)— 19.1 to 21.9 in 

 specimens 50 to 80 mm. SL, 21.0 to 24.2 in those 



Table 3. — Frequency distrib}itions of mimbers of fin rays in Symphysanodon 



Dorsal-fin rays 



Species 



VIII.ll IX.9 IX.IO 



lypus 11" 



katayamai !• 



maunaloae 3 23* 



bcrryi 1 1 132» 



octoactinus 1 17* 



'Includes holotype. 



X,10 



Species 



Table 4. — Frequency distributions of number of gill rakers in Symphysanodon 



Upper limb 



Lower limb 



9 10 11 



13 14 



22 23 24 25 26 27 28 29 



Total ( — upper limb + lower limb ) 

 31 32 33 34 35 36 37 38 39 40 41 42 



typus 2 6° 3 11.09 



kalayanmi 1" 1 1.00 



nidunalom- . 4 19° 3 9.96 



hcrryi 1 69 61» 3 10.49 



ocfonctinus 5 12» 2 12.84 



1 8« 1 1 . . 26.18 



1« 24.00 



4» 12 8 1 1 23.35 



9 57 50» 17 1 . . 25.58 



1 10* 6 2 27.47 



3 4« 3 1 37.27 



1' 35.00 



5° 11 6 1 1 1 33.31 



9 39 39 30» 14 3 36.07 



6 4* 6 3 40.32 



* Includes holotype. 



330 



U.S. FISH AND WILDLIFE SERVICE 



