124 



NATUEAL HISTORY OF ARCTIC AMERICA. 



snout to the nape. The first and last rays are usually equal in length, 

 and equal the length of the snout. The longest anal ray equals in length 

 the caudal x^eduncle. 



The length of the middle caudal rays is contained from 5 to 6 times in 

 the unit of length. 



The distance of the pectoral from the snout is contained 3^- times, and 

 its length 3^- to 4 times in the unit of length. 



The distance of the ventral from the snout equals twice the length of 

 the upijer jaw. The length of the ventral in females is contained 5 

 times (in one nearly 6 times) in the unit of length ; in males, about 4^ 

 times. 



Radial formula.— B. VI; D. IX-X, 15-10; A. 11-13; P. 15-16; V. I, 3. 



Dr. Liitken is of the opinion that " Cottus lyachyims Giinther (from 

 Port Leopold) is the genuine C. scoriyioides,^^ in which opinion I fully 

 coincide after a comparison of Mr. Kumlien's specimens with Fabricius's 

 description of G. scorpioides and the description of C. pachyjms. 



Cottus scorpioides appears in Professor GUI's List of East Coast Fishes 

 with a doubt as to its reference to the genus Cottus, to which genus, 

 however, it was properly referred by Fabricius. 



Table of Measurements. 

 Species, Cottus scorpioides Fabr. 



Cnrreut mimber of specimen 

 Locality 



21,745 a. I 21,745 b, cf. | 21,745 c,?. 

 Lat. 66° 24' K. Lons;. 68° 40'W. 



Extreme IcBf^th 



Length to origin of middle caudal rays. 

 Body : 



Greatest hcigbt 



Height Ut ventrals 



Least height of tail 



Length of caudal peduncle 



Head: 



Greatest length 



Distance from snout to nape 



Greatest width 



AVidth of interorhital area 



Length of snout 



Length of maxiUary 



Length of mandible 



Diameter of orbit 



Dorsal (spinous) : 



Distance from snout 



Length of base 



Length of first spine 



Length of second spine 



Length of third spine 



Length of fourth spine 



Length of fifth spine 



Length of sixth spine 



Length of seventh spine 



Length of eighth sprue 



Ltngt h of ninth spine 



Length of longest ray 



Milli- 

 metres. 



101 

 83 



lOOths 



of 

 length. 



MiUi- 

 motres. 



115 



lOOths 



of 

 length. 



33 



MilU- 

 metres. 



lOOths 



of 

 length. 



13 



15J 



