FURTHER NOTES ON NEW JERSEY FISHES. 163 
interest to mosquito investigators in the case of Gambusia is due, 
Mr. Seal tells me, largely to its capability of destroying the 
Anopheles or malaria mosquito larve. As these occur usually in 
very shallow places, often in the merest skim of water, such as 
over lily pads, etc., the fish by being a top feeder, and also further 
by the comparatively elongate slender body, is enabled to reach 
places and carry on its valuable destruction, which would be other- 
wise inaccessible to deep-bodied or larger species. 
Heterandria formosa Agassiz. 
PLATES 66 AND 67. 
Least Kaullifish. 
Introduced by the New Jersey Agricultural College Experi- 
ment Station, with Gambusia, during November of 1905. 
Family BELONIDE. 
( Mastaccembelid@. ) 
Tylosurus marinus (Walbaum). 
Green Gar. 
Mr. H. Walker Hand reports it from Green Creek, Cape May 
county. 
Reported from Great Ege Harbor Bay at Somers Point and 
Beesley’s Point, where it is said sometimes to reach 2 feet in 
length. Known as “gar.” 
Mr. J. B. Vanderveer, of Trenton, says that he has seen adult 
“bill fish’? skimming along the surface of the water with their 
bodies entirely out in the air, and inclined more or less perpen- 
dicularly. They are very active and gambol about. Two varie- 
ties, called “green bill fish” and “blue bill fish,” are thought to 
occur, and sometimes the large ones were eaten by the fishermen. 
Mr. R. C. Abbott tells me he found a bill fish which had been 
caught by the beak or jaws in a fresh-water mussel on the mud 
flat at Burlington Island. As the tide receded it had left the fish 
on the mud, the mussel closing its shell and thus retaining its 
captive. 
