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.NIDBA, De K. 



(Cottus. Cottopsis.) 



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

 Muffle-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, Heckel [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, Grd.) 

 C. octodeciinspinoBUS, 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- 



