i 7 8 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



[VOL. 50 



known, but they are so greatly differentiated that no less than six 

 genera have been provided for them ; four of these genera include or 

 are more or less closely related to the common Lumpfish and com- 

 bined in one subfamily (Cyclopterince) contrasted with another 

 (Liparopince) including the other two genera. 



The Cyclopterince have a well-defined spinous dorsal, although 

 in the adults of the common Lumpfish it is overgrown Dy the skin 

 and tubercles. The subfamily includes four genera which are super- 

 ficially distinguishable by the following characters : 





;-'.;',-;.,»-*,' 



Fig. 36. — Common Lumpfish or Lumpsucker, Cyclopterus lumpus. After Goode. 



Fig. 37. — Bumicrotremus spinosus. After Collett. 



Cyclopterus has large tubercles well separated, but arranged in 

 seven regular longitudinal rows, and the first dorsal becomes over- 

 grown and lost to view with maturity. The branchial apertures are 

 moderate. The Cyclopterus lumpus is the only recognized species. 



