part to S. katayamai; distribution referring in 

 part to S. hjpus, in part to S. maunalose, and 



in part to S. katayamai) Katayama, 



1968: 105, figs. 1 to 5 (comments on osteology 

 and systematic position). 



DIAGNOSIS 



Body relatively deep, the depth about 31 per- 

 cent SL. First pelvic soft ray only slightly pro- 

 duced, not extending to anal fin. Anal fin longer 

 than in other species of Symphysanodon, length 

 of depressed anal fin about 39 percent SL. Caudal 

 fin deeply forked, both lobes produced into fila- 

 ments. Anal soft rays 7. Gill rakers 11 + 24 — 

 total 35. Pored lateral-line scales 50. 



DESCRIPTION OF THE HOLOTYPE 



Maxillary extending posteriorly to beneath 

 posterior part of eye. Length of upper jaw con- 

 tained in length of mandible 1.00 time. Dorsal 

 profile convex, curving gently to above posterior 

 portion of eye, and rather steeply from this point 

 forward to tip of snout; a slight concavity above 

 nostril region ; interorbital region convex ; ven- 

 tral profile convex. Small teeth present in an 

 elliptical patch on vomer and in narrow bands 

 on palatines and ectopterygoids, no teeth ap- 

 parent on mesopterygoids. Vertical limb of pre- 

 opercle smooth except for a few small serrae; 

 horizontal limb of preopercle smooth; angle of 

 preopercle slightly produced posteriorly — pos- 

 sibly the remnant of a spine or spinelike process. 

 Anterior part of snout with scales ; a single scale 

 present in midline of anterior part of gular re- 

 gion, remainder of gular region without scales; 

 no scales apparent on branchiostegal membranes. 



Counts 



The following counts are repeated in tables 2, 

 3, and 4. Dorsal-fin rays IX, 10. Anal-fin rays 

 III, 7. Pectoral-fin rays 16. Gill rakers 11 + 24 

 — total 35. Pored lateral-line scales 50. Sum of 

 total number of gill rakers on anterior gill arch 

 plus number of pored lateral-line scales 85. 



Measurements 



Selected measurements are presented in per- 

 centage of standard length. Length of head 27.2. 

 Depth of head 21.8. Length of snout 7.3. Hori- 

 zontal diam.eter of fleshy orbit 7.4. Width of 

 suborbital 1.3. Height of cheek 7.3. Length of 



upper jaw 13.5. Length of mandible 13.6. Width 

 of bony interorbital 8.1. Depth of body 31.1. Least 

 depth of caudal peduncle 14.0. Pectoral fin reach- 

 ing a vertical through base of first dorsal soft 

 ray; length of longer pectoral fin 28.2. Pelvic 

 fin reaching anterior portion of vent ; first pelvic 

 soft ray not greatly produced. Length of longer 

 pelvic fin 23.6. Length of base of anal fin 18.1. 

 Length of depressed anal fin 38.9. Lengths of 

 dorsal spines: first 6.2, second 9.4, third — 

 damaged, fourth — damaged, longest (sixth) 13.0, 

 last — damaged. Lengths of anal spines: first 

 > 5.5— -tip broken, second 9.8, third > 10.5— tip 

 broken. Caudal fin deeply forked, both lobes pro- 

 duced into filaments; filaments not produced to 

 the extent of those on some large males of S. 

 bernji. Length of upper lobe of caudal fin ca. 

 58.0. Length of lower lobe of caudal fin ca. 56.0. 



Coloration 



Kamohara and Katayama (1959, under S. 

 typus) described the coloration of this species in 

 Formalin" (presumably shortly after capture) as 

 "reddish, a broad longitudinal orange band on 

 the side of body ; dorsal yellowish ; tip of each 

 lobe of caudal yellowish." 



After more than 10 years in Formalin the 

 holotype has faded to a light straw color without 

 any distinctive concentrations of pigment. 



OTHER SPECIMENS AND OTHER DESCRIPTIONS 



Kamohara and Katayama (1959) described 

 three specimens, 164 to 181 mm. (presumably 

 SL), from Kashiwajima, Kochi Prefecture, 

 Japan, under the name Symphysanodon typus 

 Bleeker, 1878. Katayama (1960) repeated (with 

 slight variation) the description given by Kamo- 

 hara and Katayama. One of the three specimens 

 (ZIKU 8206) mentioned by Kamohara and Kata- 

 yama (1959) is described herein as the holotype 

 of Symphysanodon katayamai. In most respects 

 the earlier descriptions of Japanese Symphy- 

 sanodon agree with the holotype of S. katayamai, 

 and in all but two of the meristic characters 

 (numbers of pectoral-fin rays and gill rakers) 

 the count given in the earlier descriptions is iden- 

 tical with that of the holotype. (Pectoral-fin rays 

 were given as 16 or 17, the holotype has 16; gill 



• The use of trade names in this publication does not imply endorse- 

 ment of commercial products. 



334 



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