CATALOGUE. OF VERTEBRATES. ■ 749 



like ; two occipital spines on each side. Dorsal rays, IV, XII 

 — I, 12 ; anal rays, 13 ; lateral-line scales, 40. 



"An occasional specimen met with, but the species appears in 

 our waters only as a straggler." 



URA.NIDEA, De K. 



(Cottus. Cottopsis.) 



U. riohardsoni, Ag., var. meridionalis, Grd. Miller's Thumb. Blob. 

 Mufl&e-jaw. Bullhead. Fresh-water. Sculpin. Little Star- 

 gazer. 



Body fusiform; head feebly armed; no slit behind fourth 

 gill ; branchiostegals six ; dorsals nearly separate ; skin mostly 

 smooth ; preopercular spine sharp and directed upward, and 

 more or less concealed by skin ; below this, two small spines ; 

 palatines with teeth ; olivaceous, barred or speckled with darker, 

 especially on fins ; body relatively robust, tapering backwards^ 

 first dorsal low; pectorals long. Dorsal rays, VI to VIII — 16 

 or 17; anal rays, about 12; length, 3 to 7 inches. Abundant 

 in Pennsylvania. 



The following is also found in Pennsylvania : 



U. viscosa, Hald. 



Palatine teeth obsolete; ventrals, I, 3; anals, 14 or 15; 

 spinous dorsal edged with orange; body stout, with many 

 mucous pores on head; mouth small. Dorsal rays, VI — 18. 

 The following is abundant in New York : 

 U. gracilis, Heck el (gobio, quiescens.) 



Anal rays, 11 or 12 ; upper edge of spinous dorsal red in life ; 

 body slender, fusiform ; preocular spine concealed ; mouth large. 

 Dorsal rays, VIII — 16. 



COTTUS, L. 



(Acanthocottus, Gid.) 



O. octodecimspinosus, Mitch. (A. virginianus.) Bullhead. 



Body slender, covered with thick skin, without true scales; 

 head large ; villiform teeth on jaws and vomer, none on pala- 

 tines ; preopercle with two strong, straight spines above and one 

 below ; color olivaceous, with transverse bars ; fins barred and 

 mottled ; ventrals plain ; tail very slender ; head long and nar- 



