172 Mr. C. T. Regan on the Osteology and 



Family 5. Agonidae. 



Percis, Hypsagonua, JBracht/opsis, Occa, Pallasina, 

 Podotheciis, Agonus, Aspiduphoroides. 



Family 6. Cyclopteridae. 



vSubfamily 1. Cyclopterinae : Cydopterus, Cyclopfer' 

 ichthys, Liparops, 



Subfamily 2. Liparidinae : Liparis,Careproctus,rara- 

 liparis, Rlwioliparis. 



Suborder 2. G a s t r ost|e o i de a. 

 Family 1. Gastrosteidae. 



Gastroffteiis, Pyyosteus, Eucalia, Spinachia. 



Family 2. Aulorhynchidae. 



Aidorhynchus, 



Suborder 3. Dactylopteroidea. 

 Family Dactylopteridae. 



Dactylopterus, Dactyloptena. 



Suborder 1. SCORP^NOIDEA. 



Mesethmoid ossified ; nasals paired ; an opisthotic; second 

 suborbital rigidly attached to first. Post-temporal of mode- 

 rate size, attached to epiotic and sometimes pterotic above, to 

 opisthotic below ; supra-cleithrum overlapping anterior part 

 o£ upper end of cleithrum ; pelvic bones directly attached to 

 cleitlira. Anterior vertebrae free, normally formed. Pectoral 

 base subvertical, often procurrent below. 



Synopsis of the Divisions and Families. 



I. Opisthotic large, extending forward to or narrowly separated from 

 prootic. 



A. Post-temporal forked. 



1. Hyo-palatine bones all present and normally developed. 



fl. Vertebrae 24 to 40 ; anterior ribs, when present, sessile or on 

 very shoi't parapophj'ses, posterior ribs on strong para- 

 pophyses ; two nostrils on each side. {Scor pant formes.^ 



». Epiotics not united by suture behind supraoccipital ; sub- 

 orbitals well ossified. 



* Three pairs of dentigerous upper pharyngeals. 



t Gill-membranes free ; pelvic fins well developed ; ribs 

 present at least on posterior prascaudal vertebrae. 

 Spinous dorsal longer than soft ; anal with 2 or 8 



pungent spines; pectoral radials anvil-shaped . . Scorpcenidcp . 

 Spinous dorsal shorter than soft ; anal with J pun- 



"•ent spine or none ; pectoral radials plate-like . . TriylUhf. 



