120 



NATURAL HISTORY OF ARCTIC AMERICA. 



Coitus octodecimspinosiLS Mitcliill is known liom IlaliCax on the north 

 to Beesley's Point, New Jersey, on the south, where it was collected by 

 Prof, S. r. Baird in 1854. It is considered a shallow-water species; but 

 the United States Pish Commission has a specimen from G8 fathoms in 

 the Gulf of Maine, where the temperature was about 42° Fahr. The 

 greater portion of the examples were from 10 fathoms or less. 



Add to these Coitus scor2)ioi(1cs of Fabricius, and it will complete the 

 list of Eastern Xorth American species of the genus Coitus so far as 

 kno^v^^. 



As alreadj- intimated, Cottus scorpius sub-species grunlandicus is quite 

 readily separated from the typical C. scorpius by its wider interorbital 

 distance and its higher si)inous dorsal, which differences are best exem- 

 plilied in the specimens from Greenland, and appear, along with others, 

 in the measurement tables. 



Table of Measurements. 

 Species, Cottus scorpius sub-species gronlandieus. 



Carrent nunfiber of specimen. 



Locality 



21,731. 



21,730. 



Godthaiib, Greenlanil, Aug. 8, 1878. 



Miflirae- 

 tres. 



Kxtrfine lencth 



Lrt'iiKtb to origin of middle caudal rays. 

 Body : 



iSreatost beight 



Grratcst width at pectoral base 



Heij;bt at vontnils 



Least height of tail 



Length of caudal peduncle 



Head: 



Greatest length 



Distance from snout to nape 



Width of interorbital area 



Length of snout 



Length of up])iT jaw 



Length of mandible 



Distaiico from snout to orbit 



Diameter of orbit 



Dorsal (spinous) : 



Distanei^ from snout 



Length of Imse 



Length of first .siiino 



Lengtli of second spine... 



Lenmh of tliird spine 



Length of fourtli spine ... 



Lenutli of fifth s])ino 



Length of sixth spine 



Leni;th of seventh spine . . 

 Length of eighth spine ... 



Length of ninth spino 



Length of tenth soino . ... 

 Length of eli'Ventn spine . 

 Length of longest ray . . . . 



Length of last ray . .". 



Anal: 



Distanee from snout 



L<-ngtli of baso 



Len;;th of first ray 



Lengtli of longest ray 



Length of last ray . .'. 



185 



lOOths of 

 length. 



24 

 22 

 24 

 5i 

 11 



39 

 28 



74 



9 

 19 

 20J 

 10 



9 



35 

 27 

 16i 

 18 



18 



19 



1G4 



14 



11 



8 



5 



17 

 6J 



62 

 25 



7 

 14 



6i 



Millime- 

 tres. 



226 

 186 



lOOths of 

 length. 



23 



23 



54 



12 



38 

 27 



6 



9 

 19 

 201 

 10 



9 



33 

 26 



15 



lOi 



lOi 



Idi 



V>i 



144 



134 



12 



74 

 5 

 3 

 19 

 8 



62 

 25 



7 

 15 



8 



