1 6 University of Michigan 



Genua 5. Asymmetron Andrews 

 Asymmetron Andrews (1893). 



Genotype. — Asymmetron lucayamun Andrews. 



25. Asymmetron litcayanmn Andrews 



Asymmetron lucayanum Andrews (1893); Kirkaldy (1895); Mark 

 (1904); Herdman (1904; in part); Lonnberg (1905); Bean (1906), 

 and others in general. 



Branchiostoma lucayanum Willey (1894). 



Epigonichthys lucayanum (sic) Fowler (1907). 



A single specimen* of an Asymmetron, apparently of this 

 species, 12.5 mm. long to the caudal process, was dredged by 

 the Steamer Albatross on December 16, 1887, off Brazil, far 

 south of the published records for the species: Albatross sta- 

 tion 2758: lat. 6° 59' 30'' N., long. 34° 47' W. ; surface tem- 

 perature, 79° F. ; bottom temperature, 79'^ F. ; depth, 20 fath- 

 oms ; bottom, broken shells. 



Myotomes, about 45 -I-9-I- 12=66. 



26. Asymmetron caudatiim Willey 



Asymmetron candatum Willey (1896) ; Herdman (1904) ; Parker 

 ("1904); Lonnberg (1905). 



2y. Asymmetron niacricaudatum Parker 

 Asymmetron macricaudatum Parker (1904). 



28. Asymmetron orientale Parker 



Asymmetron lucayanum Cooper (1903); Punnett (1903); Herdman 

 (1904, in part). 



Asymmetron orientale Parker (1904). 



^ This record is included here by permission of the United States 

 Commissioner of Fisheries. 



