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PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 85 



Pair of small nasal spines; 1 antero-supraorbital and 2 postero- 

 supraorbital spines ; pair of small coronal spines, their points directed 

 inward or toward one another; pair of long keels each end in small 

 occipital spines, followed by short nuchal; 2 bifid preorbital spines, 

 similar, on lower front edge over premaxillary ; suborbital stay with 

 3 small, rather close set spines at middle of lower orbital rim; 5 

 preopercular spines, median largest and 2 lowest directed down- 

 ward; 3 strong spines at supra-scapula, preceded by an elevated 

 spine; 2 strong opercular spines, upper larger and slightly little 

 posterior. 



mm. 



H.W.F.clel. 



Figure 20. — Sehastiscus iriacanthus, new species. Type. 



Scales 60 + 7 close along and above lateral line; 28 + 1 tubular 

 scales in lateral line; 14 above, 18 below, 16 predorsal forward to 

 occipital groove about opposite tips of occipital spines and very small 

 scales still forward to upper lip. Maxillary covered with very small 

 scales, also mandible; 14 + 6 scales obliquely down on cheek from 

 lower eye edge. Fins with fine scales basally. Scales with 8 to 13 

 basal radiating striae ; 30 to 33 slender, rather long denticles, with 2 

 or 3 transverse series of basal elements ; circuli fine, coarser apically. 



D.XII, 12, I, fourth spine 2% in total head length, third ray 23/5 ; 

 A. Ill, 6, I, third spine 2%, first ray 21/3; caudal 2, little rounded 

 behind; least depth of caudal peduncle 4%; pectoral 1%, rays i, 

 8, VIII ; ventral rays I, 5, fin 2 in total head length. 



Uniform pale or light brown, without any markings. Iris pale. 

 Fins all uniformly light. 



Type. — U.S.N.M. no. 44912, Japan. Japanese Government. 1893. 

 Length 333 mm. 



