1774 Bulletin 4.7, United States National Museum. 



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

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

 scales 55, gill rakers #+29. JORDANI, 2178. 



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



firm. 



e. Anal rays III, 8; pores of lateral line about 55; gill rakers z+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; mesethinoid processes better developed, 



straight, not elevated. 

 SEBASTOSOMUS (Sebastes,- o-w/ua, body) : 

 /. Peritoneum white ; dorsal fin deeply emarginate. 

 g. Anal rays 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. SEREANOIDES, 2182. 



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



MELANOPS, 2183. 



PRIMOSPDJA (primus, first; spinus, spine) : 



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

 ginate. 



i. Anal rays III, 8; preocular ridges obsolete, frontal region between them 

 not specially convex ; color greenish, speckled with olive. 



CILIATUS, 2184. 



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

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

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

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

 tympanic usually absent in atrovirens) ; lower jaw projecting ; parietal bones 

 usually not meeting. 



ACUTOMENTUM (acutus, acute ; mentum, chin) : 

 j. Lower jaw much projecting ; scales rather small ; lateral line 50 to 75 ; anal rays 



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. ENTOMELAS, 2186. 



II. Supraocular spine usually present. 



m. Peritoneum black. 



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

 marked with brown. RUFUS, 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 chiefly creamy. OVALIS, 2190. 



qq. Lateral line about 43 ; color darker. EIGENMANNI, 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, 



