462 
Genus Derichthys Gill 
Derlchthys GILL, American Naturalist, vol. 18, 1887, p. 
433. Type Derichthys serpentinus GILL, monotypic. 
Body stout, somewhat compressed, especially tail. Phar¬ 
ynx with neck like contraction. Head small, depressed above. 
Snout truncate as seen from above. Eyes far advanced. Mouth 
cleft large, lower jaw narrower and included. Teeth small. 
Nostrils lateral, elongate, before eyes, neither tubular. 
Branchiostegals 6, slender. Branchial arches slender. Lat¬ 
eral line inconspicuous. Dorsal origin well advanced from 
vent, rays flexible, feeble, fin rather high. Caudal small. 
Vent nearly premedian. 
Derichthys serpentinus Gill 
Deric hthys serpentinus GILL, American Naturalist, vol. 
18, 1887, p. 433. N. 39 0 44» 30” W. 71° 4», 1022 
fathoms. -- GOODE and BEAN, Oceanic Ichth., 1895, p. 
161, pi. 45, fig. 169, a-b (type). -- JORDAN and 
EVERMANN, Bull. U. S. Nat. Mus,, No. 47, pt. 1, 1896, 
p. 343. (compiled). 
Derichtys iselini BORODIN, Proc. New England Zool. Club, 
vol. 10, Jan. 22, 1929, p. 110, N. 50°41* W. 27°17», 
1000 fathoms 
