468 Fishery Bulletin 90(3). 1992 



21(19) Ventral gut pigment present 22 



Ventral gut pigment absent Orthonopias triads 



22(21) ~5 parallel lines (striations) of pigment oriented horizontally on posterior gut .... Synchirus gilli* 

 No parallel lines of pigment on posterior gut 23 



23(22) Two or more prominent anterior gut melanophores present 24 



Anterior gut melanophores absent (or one only) 26 



24(23) Dorsal head pigment absent; jaw angle pigment present 25 



Dorsal head pigment present (except in larvae ~3.5mm or smaller); jaw angle pigment 



usually absent Chitonotus pugetensis 



25(24) Anterior gut melanophores ~2; myomeres 33-37 IcelinusI Chitonotus 



( = not a type, but a category for ambiguous or damaged specimens that may be either Icelinus 

 or Chitonotus) 



Anterior gut melanophores ~10; myomeres 38-40 Icelinus type A 



(= undescribed; probably /. tenuis based on high myomere counts (38-40)) 



26(23) Jaw angle (quadrate) pigment present Icelinus quadriseriatus 



Jaw angle pigment absent IcelinusI Chitonotus 



* I have not examined larvae of this type; characters were taken from the literature. 



Appendix table 



The following larvae have not been described and are probably unknown, which should be taken into consideration when using the 

 key, especially if the larva(e) do not key out exactly. 



Taxa Comments 



Artedius corallinus 15-16 dorsal rays; A. type 3?; intertidal (see Washington 1986). 



Artedius notospikitus A. type 3? (Washington 1986). 



Icelinxis burchami fiiscescens Rare; found in deep water (126-549m); 16-18 dorsal rays. 



Icelinus cavifrons X-XI dorsal spines (>98%); IX dorsal spines (<2%). 



Icelinus filamentosus 15-18 dorsal rays. 



Icelinus Jimbriatus Rare; found at moderate depths (60-265 m); X-XI dorsal spines. 



Icelimis oculatus Rare; found in deep water (109-274 m); X-XI dorsal spines; 37 vertebrae. 



Icelinus sp. nov. X dorsal spines; rare? 



Leiocottus hirundo 16-17 dorsal rays; recent occurrence on reefs in Santa Barbara area and Santa Cruz I., California. 



Oligocottus rimensis 16-19 dorsal rays; juveniles lack 'W'-shaped pigment on side; intertidal. 



Oligocottus rubellio Juveniles lack 'W'-shaped pigment on side; intertidal. 



Psychrolutes phrictus Rare, found in deep water (839-2800 m), 22-26 pectoral rays; may = "cottoid A" (Richardson and 



Washington 1980). 



Radulinus vinculus Rare; southern range limit is Anacapa I. 



Zesticelus profundorum Rare; 25-26 vertebrae; deep water (88-2580 m). 



