11. COREGONUS. 193 



origin of the dorsal fin. Eye as long or nearly as long as the snout, 

 and about one-fourth of the length of the head. Length of the 

 mandible much more than the least depth of the tail. There are 

 seven longitudinal series of scales between the lateral line and the 

 root of the ventral fin. 



North of continental Europe. 



Var. a. alhula. Eye as long as the snout, one-fourth or a little 

 more than one-fourth of the length of the head ; pectoral as long as 

 the head (without snout), its length being two-thirteenths of the total 

 (without caudal). The height of the body is one-sixth or rather 

 more than one-sixth of the total length (without caudal) in males, 

 and rather more than one-fifth in females ; the length of the head 

 is two-ninths, or somewhat more than one-fifth. Vert. 57. Lake 

 Wenern. 



a. Many adult (6 inches) and half-grown specimens. From Mr. L. 

 Lloyd's Collection. 



Var. /3. norvegica. Eye somewhat shorter than the snout, and a 

 little less than one-fourth of the length of the head ; pectoral rather 

 longer than the head (without snout), its length being one-fifth of the 

 total (without caudal). The height of the body is rather more than 

 one-fifth of the total length (without caudal) ; the length of the 

 head is two-ninths. Vert. 57. Norway. 

 h-e. Adult(7inches) and half-grown. Presented by Professor Esmark. 



Var. y. marcenula. Eye as long as the snout, one-fourth or some- 

 what more than one-fourth of the length of the head ; pectoral as 

 long as the head (without snout), its length being two-elevenths of 

 the total (without caudal). The height of the body is contained four 

 times and two-thirds in the total (without caudal), the length of the 

 head four times. Vert. 58. North Germany. 



f-h. Adult, 8 inches long. From the Berlin Museum. 



i. Several specimens. Schwcrin Lake. From the Berlin Museum. 



h. Adult, skeleton. From Dr. A. GUnthcr's Collection. 



Var. I. finnica. Appears to be very near to the preceding variety, 

 but the length of the head is two-ninths of the total (without caudal). 

 Finland. 



l-m. Adult (7 inches long), in a bad state. Gulf of Finland. 



28. Coregonus vimba. 

 Sik-wimma. 



Anims-wimma, Linn. Vcdy. Resa, p. 231. 



Coregonus vimba, L. 8yd. Nat. i. p. 512. 



wimba, Nilss. Pradr. p. 17, & Faun. Suec. Fisk. p. 462 \^Cuv. 8^ 



Val. xxi. p. 51'5, pi. 682. This description is apparently taken from 

 a Russian species, different from C. vimba ; the figure, at all events, 

 does not represent the Swedish C. vimha\ 



D. 12. A. 14-16. L.lat. 80. L. transv. 9/10. Vert. 58. 



The height of the body is rather more than the length ot the head, 



VOL. VI. o 



