742 GEOLOGICAL SURVEY OF NEW JERSEY. 



Family GERRIDJE. 



Mouth very protractile, descending when protruded ; no supple- 

 mentary maxillary ; spine from premaxillary ascends to above the eye ; 

 surface of maxillary silvery, like rest of head ; base of mandible 

 scaly ; teeth villiform ; pseudobranchise concealed. 



GBRRBS, Cuv. 



G. gula, Cuv. & Val. (Diapterus, Eucinostomus argenteus.) 



Silvery, without spots or streaks ; young sometimes barred ; 

 mouth small ; scales large ; soft dorsal extends further back than 

 usual ; second spines of dorsal and anal only a little enlarged ; 

 soft and spiny part of dorsal of similar extent ; preopercle entire ; 

 anterior part of premaxillary groove on top of head, scaled. 

 Dorsal rays, IX, 10 ; anal rays, III, 7 ; scales, 4 45 9 ; depth 

 two-fifths of length ; third dorsal spine twice the length of 

 second anal. 



"This species was first made known by Prof. Baird in 1854, 

 he having taken specimens at Beesley's Point. The writer has 

 seen many specimens from the same locality, and from South 

 Amboy, Atlantic City, &c. They are most abundant in Septem- 

 ber and later, until winter." [C. C. A.] 



G. homonymus, G. & B. (Diapterus, Eucinostomus argenteus.) 



Silvery, brownish above, center of scales with a dark spot ; a 

 spot on spinous dorsal ; young with transverse bars ; depth half 

 of length ; third dorsal spine about equal to second anal. Dorsal 

 rays, IX, 10 ; anal rays, III, 8 ; lateral-line scales, 40; other- 

 wise like preceding. Atlantic coast. Abundant southward. 



Family LABRIDJE. 



"Wrasse-fishes. 



Pseudobranchs well developed ; slit behind last gill small or obso- 

 lete; scales cycloid; no supplemental maxillaries; premaxillaries 

 moderately protractile; teeth strong, often soldered together into 



