70 



MONOGRAPH OF THE FKKSH WATER 



III. 



yond the anterior margin of the anal. Insertion of 

 ventrals under the anterior margin of first dorsal, and 

 behind the pectorals. 



CottUS Alvordii, Grd. Body stout and 

 short, tapering rapidly away. A second preopercular 

 spine, very minute. Origin of anal fin opposite the 

 third ray of second dorsal. Tip of pectorals extend- 

 ing beyond the anterior margin of the second dorsal 

 and anal fins. Insertion of ventrals near the lower 

 edge of pectorals, in advance of the anterior dorsal. 



i'otf UN meridionalis, Grd. Body stout 

 and short. A second and third, very minute 

 spines on the preopercular. Origin of anal fin op- 

 posite to fourth ray of second dorsal. Tip of pecto- 

 rals not reaching the anal. Insertion of ventrals 

 even with the lower edge of the pectorals, in advance 

 of the anterior dorsal. 



II. Rays of ventral fins, four in number. 



CottU8 Jf radii*, Heck. Body fusiform. 

 Tip of pectoral fins extending beyond the fourth 

 ray of second dorsal, and first of anal fin. Occa- 

 sional palatine teeth. Insertion of vcntrals under 

 the pectorals, and in advance of anterior dorsal. 



CottllS TI8COSU8, Hald. Body subcylindri- 

 cal, stout. Tip of pectorals not reaching the anterior 

 margin of the anal. Insertion of ventrals behind 

 the pectorals, and in advance of the anterior dorsal. 



CottllN i'raiiklillii, Agass. Body nearly 

 cylindrical. Tip of pectoral fins not reaching the 

 anterior margin of second dorsal. Insertion of ven- 

 trals in advance of the anterior dorsal, and under 

 the middle of pectorals. 



CottllN gohioidCM, (>r<\. \t-x\y nubcylin- 

 drical. Tip of pectoral fins not reaching the anal. 

 Insertion of ventral* under tin- ujijx-r edge of the 



j.. . I..IM!- 



CottiiN boleoide*, (ir-l. IMy fusiform, 



ulcnder. Tip f [lertonil (ins extending bejQod the 

 fifth ray of ncond .|.. T -- ,1. and tliinl <( anal, fins. 



bus pinnarum pectoralium ultra anteriorem pinnae 

 analis marginem prolatis. Pinnis ventralibus sub 

 anteriorem marginem pinnae dorsalis prinue et post 

 pcctorales, insertis. 



CottllS Alvordii, Grd. Corpore crasso 

 brevique cito decrescente. Altera spina pncojtereu- 

 lari, admodum parva. Originc pinnae analis posita 

 ex adverse tertio pinnae dorsalis secundac radio. 

 Extrcmitatibus pinnarum pectoralium ultra anterio- 

 rem pinnarum dorsalis secundae et analis marginem 

 porrcctts. Pinuis veutralibus prope inferiorem pec- 

 toralium marginem et ante dorsalem anteriorem, in- 

 scrtis. 



Cot In* ineridionalis, Grd. Corpore 



crasso brevique. Spina minima secunda atque ter- 

 tia supra praeopercularcm. Origine pinnae analis 

 ex adverse quarto dorsalis secundae radio. Extrcmi- 

 tatibus pinnarum pectoralium non porrectis ad pin- 

 nam analcm. Pinnis ventralibus in eadem linea 

 qua pcctorales, ctantc dorsalem anteriorem, insertis. 



II. Piunarum pectoralium radiis, quatuor. 



CottUS gracilis, Heck. Corpore fusiforme. 

 Extremitatibus pinnarum pectoralium ultra quartum 

 pinnae dorsalis secundae ct primum analis nidiutii 

 porrectis. Dcntibus palatiuis liqundo oecnrentibus. 

 1'innis ventralibus sub pcctorales ct ante dorsalem 

 anteriorem, insertis. 



CottUS vixC'OMI*, Hald. Corpore suWylin- 

 drico, crasso. Kxtrrmitatilms pinnarum pectorulium 

 non porrectis ad anteriorem pinna; aualis margincm. 

 Pinnis ventralibus post pcctorales ct ante dorsalem 

 anteriorem, inscrtis. 



Fraiiklinii, Agass. Corpore cy- 

 lindrico. Extremitatibus piuuarum pectoralium non 

 productis ad anteriorem pinna; dorsulis sccundiu mar- 

 giuem. PiuniH ventralibus ante dorsaleui antfrinn'm 

 et sub pectoralium medio, inscrtis. 



CottllS ffOhioidvg, (in!. ('orjxirosiibrylin- 



drico. Extremitatibus pinnarum pMtonlimn non 



|ir<Hliictis ail piiiiiain annlem. 1'iiini.s ventralibus 

 nub superiori'in ]>uvtoraliuiu inarginem, inscrtis. 



C'oflllM PM>leoide,<!nl. Corport'fui'iformi', 

 LT.u-ili'. Kxtreiiiitatilnis pimiamm jH-etoniliuin ultra 



quintan 



dnrs!ili> 



'( tertiuni aiiali.- 



