96 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvii. 



and none tropical, the bulk of the group inhabiting temperate waters. 

 The vertical range of most of the species is rather limited; some live 

 in and near tide water, and a few species have been taken at a depth 

 of 1,600 feet. All are ovoviviparous, bringing forth great numbers 

 of young, which are nearly one-half inch in length when born. The 

 species differ greatly in form and armature, and in the extension of 

 the bones of the cranium, but the genera based on these differences 

 intergrade too closely to admit of definition, notwithstanding the 

 great differences which appear on comparison of extreme forms. 



{sebastes, sidaog^ resemblance; Sebast&s is from ffeftocarog^ magnifi- 

 cent.) 



a. Emmelas. Dorsal spines 14; skull thick, with small spines; eolor dull brownish; 



peritoneum black glaucus, 2. 



aa. Dorsal spines always 13. 

 b. Cranial ridges, except parietal, all obsolete, or very slightly develoi^ed ; lower 

 jaw much projecting. 

 c. Scales moderate, 40 to 55 pores in lateral line. Parietal bones usually meeting. 

 d. Pkimospina. Peritoneum black; lower jaw projecting with a symphyseal 

 knob; anal rays III, 7. 

 e. Body moderately elongate, compressed; the depth 3 to 3^ in length. 

 /. Tubes in lateral line 45; mandible naked; maxillary scaly, 2i in head. 

 Color warm brown, shaded and mottled with darker; all the fins, 



except pectoral and caudal, distally black tnczanowsku, 3. 



ff. Tubes in lateral line, 54; mandible scaled; maxillary scaled, 2^^ in 

 head; pectorals scarcely reaching vent; color creamy brown; lateral 



line in a pale streak; opercle with a black blotch itinus, 4. 



ee. Body ovate, compressed, the depth 2| in length; scales large, 30 pores 

 in lateral line; mandible not scaled; maxillary scaly, reaching pos- 

 terior border of eye; pectorals reaching front of anal. Color creamy 

 olive green, orange-tinged below; orange streaks about eye; back in a 

 pale streak; clouded with dusky; lateral line a dark, opercular l)lotch; 



fins blackish edged steindacJineri, 5. 



dd. Sebastosomus. Peritoneum white, color blackish or bronze-greenish. 

 ff. Anal rays III, 8. 



/(. Pores of lateral line 50; mouth moderate, the maxillary 2J in head; 

 eye 3^ in head; pectoral reaching tips of ventrals; not to front of 

 anal; color blackish with dark cross-bands; fins all black; depth 



2| in length guntheri, 6. 



hli. Pores of lateral line 45; mouth larger, the maxillary 2\ in head; 

 eye 3 in head; pectoral reaching front of anal; color dull brassy 

 green; maxillary usually with a dark stripe; depth 2f in 



lengthc incrmis, 7. 



gg. Anal rays III, 7; pores 45; body slender; the depth 2f in length; 

 pectoral very long, reaching beyond ventrals to front of anal; 

 mouth moderate; eye 3 in head. Color dusky, white below; fins 



edged with dusky, the pectorals colorless toMonis, 8. 



hh. Cranial ridges somewhat developed, most of them present and ending in a 

 slender spine; lower jaw projecting; parietals usually not meeting. 



i. AcuTOMENTUM. Lower jaw much i>rojecting, with a sjnnphj'seal 

 knob. 

 j. Second anal spines not nuich if any longer than third. 



