270 Mr. C. T. Regan on the 



pectoral fin^ as is indicated by the specific names ; all are 

 small littoral forms. 



I have examined the skeleton o£ CongrOgadus stthducens, 

 and I liave ascertained that Halidesmus agrees with it in the 

 structure of the pterygoid. 



Family 4. Notograptidae. 



Body covered with small scales. Vertical fins confluent ; 

 each dorsal and anal ray, except the last two, which are 

 branched, a slender pointed spine to which a distal filament 

 is attached posteriorly ; caudal of 11 branched rays ; pelvics 

 small, jugular, 1-rayed, appearing as a pair of simple fila- 

 ment.s. Mouth not ])rotractile ; a short mental barbel; 

 maxillary excluded from the gape^ reduced to a slender rod ; 

 broad bands of small pointed teeth in the jaws and on the 

 palatines, which nearly meet in the middle line below the 

 toothless vomer ; pterygoid connecting palatine with quad- 

 rate. Parietals meeting above the supraoccipital ; exoccipital 

 condyles wide apart. Post-temporal forked 3 hypercoracoid 

 and by pocoracoid well developed, in contact ; radials hourglass- 

 shaped. 



This family includes but a t^ingle species, Notograptus 

 gttttahcs, Giinth., rei)resented in the 13ritish Museum by three 

 examples from Cape York and Bowen. 



Division 2. Clinifokmes. 



Each basal bone of the dorsal and anal fins attached to 

 its own neural or haemal spine. Suborbital ring laminar, 

 movable. Exoccipital condyles wide apart. 



Family 1. Clinidae. 



Body Usually scaly. Dorsal wath spinous portion more 

 extended than the soft, or with all the rays spinous ; 1 or 2 

 anal spines j caudal free, with about 13 principal rays ; 

 pectorals broad^based ; pelvics jugular, of a spine and 3 or 4 

 simple articulated rays, 2 or 3 of which are usually thickened, 

 closely articulated and free distally. Gill-membranes united, 

 free from isthmus. Mouth protractile; conical or villiforra 

 teeth in jaws and often on vomer and palatines. Suborbitals 

 not stout ; prgeorbital a lamina with a small pit on its upper 

 edge articulating with a small facet on the lateral ethmoid ; 

 postorbital a lamina adherent by its upper edge to the skulK 

 Poslorbital part of skull of nearly equal width throughout ; 



