176 



Mr. C. T. Regan 07i the Osteology and 



spinous dorsal is longer than the soft except in Trachi- 

 cephaJus. In Lysodermiis and Minous 1, in Chorismodactylus 

 8 pectoral rays are detached ; Inimicus has the two lowest 

 rays ahnost detached; in the rest the pectoral is broad and 

 procurrent, without detached rays. The differences in the 



Fig. 2. 



Pectoral fiu skeleton of A. Pterygotrigla polyotnmala, B. Trachkephalus 

 elongatus, C. Minous nionodactylus, J). Sijnancia horrida. Theradials 

 are numbered. 



pectoral fin skeleton are shown by the figures (fig. 2, B, C, D). 

 The vertebrae number 11 + 15 in Minous, 12 + 16 m Inimicus, 

 11 + 13 or 14 in Synancia, 11 + 18 in Trachicephalus. 



Family 6. Pataecidae. 



Gnathanacanthus differs from the Scorpsenidse only in the 

 characters given in tlie key. Patcecus further differs in tlie 

 absence of pelvic fins and tlie minute foramina between the 

 pectoral radials. Vertebrae 10 + 19 in Gnathanacanthus, 

 about 35 in Pata^cus. 



Division 2. Hexagrammiformes. 



Opisthotic large, but not always reaching prootic. Meso- 

 pterygoid well developed. 3 pairs of dentigerous upper 

 pharyngeals. Vertebra 42 to 64 ; praecaudals with jnira- 

 pophyses from the third, fourth, or fifth; ribs on para- 

 pophyses, epi pleurals on ribs at or near their insertion. 

 Post-temporal forked ; pectoral radials 4, anvil-shaped, the 

 two lowest on hypocoracoid. 



