1898.] ox btjttberlibs feom the haeab highlands. 821 



11. Gtmnaechtjs. 



GymnarcTius, Cuv. E. An. 2Dd ed. ii. p. 357 (1829); Giinth. Cat. 

 vi. p. 225 (1866); Bouleng. Ann. Mus. Congo, Zool. i. 1898, p. 2. 



Teeth forming a single complete series on the entire edge of both 

 jaws (14 in the upper, 25-28 in the lower), with compressed, 

 pointed or truncated crowns finely serrated on the sides ; palate 

 and tongue toothless ; mouth wide, terminal. Nostrils far apart, 

 remote from the eye. Body much elongate, the tail gradually 

 attenuated into a filament. Dorsal occupying the whole length of 

 the body ; anal, ventral, and caudal fins absent. Vertebrae 114- 

 120 (45-47 + 67-75), Air-bladder cellular, lung-like. 



1. Gtmnaechtis NlLOTICrS. 



Eifaud, Voy. Egypte, pi. 138 bis (1830). 



Gymnarchus nihticus, Cuv. 1. c. ; Erdl, Abh. Bayer. Ak. v. 1847, 

 p. 209, pi. V. ; Heckel, Denkschr. Ak. Wien, vi. 1854, p. 11, pi. i. ; 

 Hyrtl, Denkschr. Ak. AVien, xii. 1856, p. 1, pis. i-iv. ; Griinth. Cat. 

 vi. p. 225 (1866) ; Steind. Sitzb. A.k. Wien, ki. i. 1870, p. 556. 



Depth of body 7 to 9g times in total length, length of head 5^ 

 to 6 times. Head 2 to 2| times as long as deep ; snout rounded, 

 scarcely projecting beyond the lower jaw ; eye very small; a strong 

 fold of the skin connects the opercles across the isthmus. Dorsal 

 183-210. Pectoral rounded, | to f length of head. Scales very 

 small, largest along the middle of the side. Olive or brown above, 

 whitish beneath. 



Total length 800 millim. 



Upper Nile, Senegal, Niger. 



EXPLANATION OF PLATE LL 



Sciagraph of Gnathonemus rhyncJiophonis, p. 810. 



5. A List of Butterflies obtained in the Harar Highlands by 

 Capt. H. G. C. Swayne, R.E. By Arthur G. ButleRj 

 Ph.D., F.L.S., F.Z.S., &c. 



[Keceived August 20, 1898.] 



The small collection of which the following is an account was 

 somewhat hurriedly made, all the specimens having been secured ^ 

 in about three days, at an elevation of from 4000 to 8000 feet on 

 the Harar Highlands. It is therefore not surprising that most of 

 them are a good deal shattered ; some of them are nevertheless very 

 acceptable additions to the Museum collection : one species is new. 



So little is known even now of the Lepidopterous fauna of 

 this part of Africa that every consignment received thence is of 

 importance and is worthy of careful record, even though many of 

 the examples may have no further value when that record has 

 been pubhshed. 



' They do not appear to have been netted, but rather knocked down and 

 captured by hand. 



