650 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 
ANALYSIS OF GENERA OF NETT A STOMID^E . 
a. Dorsal fin low, beginning nearly above gill-opening. 
b. Nostrils lateral, the posterior slit-like and placed just in front of eye ; snout 
without fleshy tip Chlopsis, 31. 
bb. Nostrils nearly superior, the posterior above and in front of eye, the anterior 
at tip of bony portion of snout ; head with numerous mucous pores, 
c. Snout without a fleshy proboscis, the anterior nostrils near its tip. 
Nettastoma, 32. 
cc. Snout with a long, slender, fleshy tip or proboscis, at the base of which are 
the anterior nostrils Venefica, 33. 
Genus 31.— CHLOPSIS. 
Chlopsis Rafinesque, Indice Ittiol. Sicil., 58, 1810 (bicolor). 
Saurenchelys Peters, Berliner Monatsberichte, 397, 1864 (cancrivora). 
Type : Chlopsis bicolor Rafinesque. 
Etymology: a green twig; ofiic;, appearance. 
This genus is based on a single little-known species from the Medi- 
terranean to which another has been recently added. It is not very 
different from Nettastoma , apparently differing in the position of the 
nostrils. 
ANALYSIS OF THE SPECIES OF CHLOPSIS. 
a. (Head 2^- in head and trunk; eye -J- length of snout; upper jaw the longer; ver- 
tical fins, with a black margin posteriorly; peritoneum silvery.) ( Peters , per 
Gunther) Bicolor, 98. 
aa. [Ilead 2f in head and trunk; eye 3£ in snout; body extremely slender, tapering 
posteriorly to a very narrow tail, which is, however, not filamentous ; head long 
and slender, lower jaw shorter than the upper ; eye nearly over angle of mouth; 
posterior nostril a long horizontal slit immediately in front of lower margin of 
eye ; series of slit-like mucous pores along upper jaw ; series of round pores along 
lower jaw; transverse series on occiput; both jaws and vomer with wide bands 
of short, sharp conical teeth, inner series on jaws slightly longer than the other; 
bands on shaft of vomer reaching back to front of posterior nostril; gill- openings 
with their margins much curved, forming f of a circle, their vertical diameter 
nearly equal to that of eye, and more than twice the length of the interspace; 
gape 2f in head; head 2f in head and trunk; body 3£ in tail; eye 3| in snout; 
dorsal beginning 1£ length of head behind the same. Color dusky-olive, dotted 
with coarse brown specks everywhere except on under side of head and fins ; 
blackish streak on median line of belly ; fins translucent.] (Gilbert.) 
Equatorialis, 99. 
98. CHLOPSIS BICOLOR. 
Chlopsis bicolor Rafinesque, Indice Ittiol. Sicil., 59, 1810 (Palermo). 
Saurenchelys cancrivora Peters, Monatsber. Akad. Wiss. Berl., 397, 1864 (Mediter- 
ranean) (fide Giinther) ; Gunther, viii, 48, 1890 (copied). 
Habitat: Mediterranean Sea. 
Etymology : Latin, two-colored. 
This species is known to us only from the scanty description of 
Peters. The equally scanty description and poor figure given by Rafin- 
esque of his Chlopsis bicolor seems to belong to the same species, and 
we have therefore substituted Rafinesque’s name for the preferable 
name given by Peters. 
