1774 Bulletin ^7, United States National Museum, 



d. Peritoneum wholly black ; body very slender, tbe depth 4 in length; col- 

 oration silvery olive or red; skeleton rather flexible. A. Ill, 9 or 10; 

 scales 55, gill rakers a;+29. jokdani, 2178. 



dd. Peritoneum white or with dark dots; depth about 3s in length; skeleton 

 firm. 

 e. Anal rays III, 8; pores of lateral line about 55; gill rakers a;-|-25; 

 dusky olivaceous above, silvery on sides, more or less flushed with 

 red. GOODEi, 2179. 



ee. Anal rays III, 9 ; tubes of lateral line 65 to 80 ; color light olivaceous 

 red; young olivaceous, somewhat mottled. paucispinis, 2180. 

 cc. Parietal bones usually meeting; mesethmoid processes better developed, 

 straight, not elevated. 

 Skbastosomus {Sebastes; crwfia, body) : 

 /. Peritoneum white; dorsal fln deeply emarginate. 

 g. Anal raj's III, 9. 



h. Pectorals reaching tips of ventrals, but not quite to vent ; olivaceous ; 



caudal yellowish green. flavidus, 2181. 



hh. Pectorals not reaching tips of ventrals, not nearly to vent; gray of 



varying shades, the back darker; a series of large white blotches 



along sides of back much more marked in some than in others; 



fins yellowish. serranoides, 2182. 



gg. Anal rays III, 8; color dusky, sides spotted with black; caudal dark. 



MELANOPS. 2183. 

 Petmospina {prirMis, first; spinus, spine) : 

 ff. Peritoneum black ; colors dusky, tins blackish, dorsal fin not very deeply emar- 

 ginate. 

 i. Anal rays 111,8: preocular ridges obsolete, frontal region between them 

 not specially convex ; color greenish, speckled with olive. 



CILIATUS, 2184. 

 ii. Anal rays III, 9; preocular ridges present, usually ending in spines, fron- 

 tal region between them bulging; color blackish. mystinus, 2185. 

 bh. Cranial ridges somewhat developed, preocular, postocular, tympanic, and parietal 

 spines usually all present, delicate (supraocular also present in some species ; 

 tympanic usuallj' absent in atrovirens) ; lower jaw projecting ; parietal bones 

 usually not meeting. 

 AC0TOMKNTUM (actitus, acute ; mentum, chin) : 

 j. Lower jaw much projecting ; scales rather small ; lateral line 50 to 75 : anal i-ays 

 III, 7, to III, 9 ; dorsal fin not deeply emarginate, soft dorsal low. 

 k. Second anal spine scarcely or not longer, usually shorter, than third. 



I. Supraocular spine wanting; color creamy olivaceous; peritoneum 



black. ENTO.MELAS, 2180. 



II. Supraocular spine usually present. 



m. Peritoneum black. 



11. Anal rays III, 8; compressed, elongate; rufous, variously 

 marked with brown. eufus, 2187. 



nn. Anal rays III, 7; elongate; head pointed; mostly black 

 above, lateral line vermilion, black band below it. 



MACDONALDI, 2188. 



mm. Peritoneum white. brevispinis, 2189. 



kk. Second anal spine notably longer than third ; peritoneum black, 

 o. Supraocular spines usually present. 



p. Body rather ovate, the depth less than 3 in length. 



q. Lateral line about 70; color cliiefly creamy. OVALis, 2190. 



qq. Lateral line about 43 ; color darker. eigenman.m, 2191. 



pp. Body elongate; depth more than 3; pores of lateral line 50 



to 52. 



r. Pectorals not reaching vent; A. Ill, 7; color creamy with 



dark bands; spines on head very weak, often absent. 



HOPKINSI, 2192. 



