144- Mr. C. T. Regan on the 



present ; soft dorsal and anal moderately long ; pelvlcs 

 narrowly separated. Head broad, with the eyes superior; 

 mouth terminal, nearly vertical, with the lower jaw promi- 

 nent ; villi form teeth in jaws, in 2 separate patches on 

 vomer, and on palatines. Bones of head exposed ; prae- 

 orbital and first suborbital forming a shelf ; operculum 

 large and suboperculum small. Mesopterygoid present, but 

 small and. narrow ; metapterygoid large, but not reaching 

 sphenotic. Parietals meeting above supraoccipital. Upper 

 fork of post-temporal laminar, rigidly united to skull ; radials 

 still shorter than in the Leptoscopidae, united to hyper- 

 coracoid and hypocoracoid by suture or ankylosis. Pelvic 

 bones erect, vertical laminae. Vertebras 26-30 (11-12 + 

 16-18) ; first moderately long, firmly attached to skull ; 

 praecaudals increasing in length from the second and third, 

 which are very short, to about the seventh ; praecaudals 

 Avith parapophyses from the sixth ; ribs present, anteriorly 

 attached to under surface of epipleurals, posteriorly on 

 parapophyses. 



In other characters similar to the Leptoscopidae, to which 

 they are closely related. 



Division 11. Nototheniiformes. 



I have recently characterized this group and made a 

 revision of the species (Trans. R. Soc. Edinburgh, xlix, 

 1913, pp. 249-289). 



Division 12. Callionymiformes. 



The peculiarities of the skeleton of the head and of the 

 pectoral arch and the reduced number of vertebrae warrant 

 the recognition of a separate division for the Callionymidae. 

 This family may be related to the Pinguipedidae, but is 

 much more specialized. The Gobiesocidae differ in many 

 characters of importance. 



Fam. 1. Callionymidae. 



Body naked; lateral line present. Spinous dorsal separate, 

 of 3 or 4 slender flexible spines ; anal similar to soft dorsal, 

 without distinct spine, with 7 to 12 rays; caudal with about 

 10 principal rays ; pelvics in advance of the pectorals, wide 

 apart, each of a spine and 5 branched rays. Mouth pro- 

 tractile, terminal, horizontal, the lower jaw not prominent; 



