are rare and that the moonfish varies in abundance in different 

 years. 



Genus Selene 



(137) Selene vomer Linnaeus 1758 

 Lookdown, dollarfish, moonfish 



Specimens: (PLATE 41) 



This is a rare tropical species which strays into Rhode Island 

 waters during late summer and fall. A 52 mm. (TL) specimen was 

 taken from the Newport traps in October, 1957, by the author. 



Genus Oligoplites 



(138) Oligoplites saurus (Bloch and Schneider) 1801 

 Leatherjacket 



Specimens: 



This is a tropical species which is rare in Rhode Island waters. 

 Three specimens of this species were collected by the writer from 

 the traps at Point Judith during June and July, 1957. They ranged 

 from seven to ten inches (TL). 



Genus Alectis 



(139) Alectis crinitus (Mitchill) 1826 

 Threadfin 



Specimens: (PLATE 42) 



The type specimen of this southern species was a threadfin taken 

 near Block Island and described by Mitchill in 1826. Five specimens 

 of a standard length, from four to seven inches (TL) were collected 

 by the writer from the Newport traps during October, 1957. 



Genus Trachinotus 



(140) Trachinotus falcatus (Linnaeus) 1758 

 Round pompano 



Specimens: 



A three-inch (TL) specimen of this tropical species was collected 

 in the Pettaquamscutt River by D. Horton during the summer of 



56 



