896 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 
spots separated by a floe network of the white ground color; each pore 
of the lower jaw in a round white spot; fins without white margin; in 
young examples the black spots are larger and fewer iu number than in 
adults. Teeth uniserial; canines large; jaws not shutting completely; 
mandible with 23 to 28 teeth on each side, of which the 3 anterior are 
canines, the third being separated from the preceding by an interspace. 
Length of anterior nasal tubes less than vertical diameter of the eye. 
Snout produced, narrow. Eye moderate, f length of snout, a little 
nearer angle of mouth than tip of the snout. Cleft of mouth very 
wide, f length of head. Gill-opening a little wider than eye. Tail as 
long as, or somewhat longer than, body. Length of head half, or a 
little less than half, that of trunk. {Gilntlier.) Tropical parts of the 
Atlantic, north to Southern Florida. 
(Cuvier, Rtgue Anim. ; Giiiither, viii, 120.) 
Page 358. Before Ccecula insert: ^ 
168 (&).— JLETIIARCHUS Goode & Bean MSS. 
(Goode & Beau, Proc. U. S. Nat. Mus. 1882: lju’© Letharclius veJife)' Goode »& Beau.) 
This genus differs from Coecula {Sphagebranchus) iu the total absence 
of the anal fin. The dorsal is high and begins on the head; gill-oiieu- 
ings subinferior, nearly longitudinal; pectoral wanting. {Xrj0op.ac, to 
forget; apyp', anal.) 
580 (?)). E. velifeB’ Goode &- Beau MSS. 
Body rather robust, somewhat compressed, its greatest depth a little 
more than f the length of head. Head large, abruptly tailoring ante- 
riorly; snout very slender and pointed, projecting considerably beyond 
the lower jaw, its length fi^ad, and nearly twice the very small eye; 
nasal tubes rudimentary; anterior nostril under tip of snout; cleft of 
mouth, from tip of snout, 4 in head; eye nearer tip of snout than angle 
of mouth; lower jaw short and weak; tongue short, free iu front; teeth 
small, pointed, subequal, in narrow bands on jaws and vomer; head 
in trunk; head and trunk 1^ times length of tail. Dorsal unusually 
liigh, its height at nape equalling cleft of mouth; its insertion at first 
third of head. End of tail sharp. Anal fin wanting. Xo trace of xiec- 
torals. Gill-openings large, subinferior, oblique, convergent anteriorly, 
their length more than three times breadth of isthmus, and equal to 
lower jaw. Lateral line very distinct, extending forward in a curve to 
below front of dorsal. Four conspicuous pores on each side of lower 
jaw, 3 behind each eye, 3 at the nape in front of dorsal, 1 on top of the 
