1881. ] Late Explorations in the Gaboon. 447 
ing stouter, each with a conspicuous bristle externally ; in having a 
single spine or tooth above these, and another much stouter, 
erect, recurved spine, bidentate at tip, below them or at base of 
tongue, which is here represented by a cordate lobe. There is a 
spine on the front anterior border of each wing; the legs are all 
shorter ; the prothoracic spiracles less conspicuous ; the hairs on 
abdominal joints shorter ; the transverse dorsal teeth smaller and in 
single row ; the basal abdominal joint without spines, but with long 
stout hairs and the dorsal tubercles of abdominal joints nine re- 
placed by a single spine. 
EXPLANATION OF PLATE VI. 
(Natural sizes indicated in hair-line.) 
Fic. 1—Larva of Systechus oreas, from the side; 1 4, head from side, still further en- 
ged; 1 c, same from front; 1 d, left maxilla; 1 ¢, left mandible; 1 /, meso- 
thoracic spiracle ; 1 g, pre-anal spiraele. 
Fic. 2,—Pupa of Systechus oreas, ventral view; 2 a, same, side view; 2 4, dorsal 
part of anal end; 2 ¢, prothoracic spiracle ; 2 d, form of dorsal horny plates and 
spines on the abdomen, 
Fic. 3.—Systechus oreas, 2; 3.4, head of same from side; 3 4, antenna of same 
from above ; 3 ¢, antenna of same from side; 3 ¢, mouth parts separated. 
Fic. 4.—Larva of Zyriodites mus as it appears when contracted prior to pupation ; 
4 @, head from side; 4 4, left maxilla; 4 c, left mandible 
Fic. §.—Pupa of 7riodites mus, ventral view; 5 a, same, side view; 5 4, dorsal 
view of anal parts; § c, form of dorsal plates and spines on abdomen. 
FIG. 6.— Triodites mus, 9; 6 a, her head, front view; 6 4, her right antenna from 
above; 6c, right antenna from side. ‘ 
Fic. 7.— Triodites mus, 3; 7 4, his head, front view. 
:0: 
LATE EXPLORATIONS IN THE GABOON. 
BY HUGO VON KOPPENFELS. . 
TOwarps the end of last year I again had the good luck to 
kill an almost full-grown gorilla, whose length was 1.75 
meters, and the width of the shoulders 0.89 meters. This gorilla, 
and a young female, should, by this time, be in possession of Dr. 
V. von Kraus, Stuttgart. I, by chance, shot the male gorilla in 
the Vicinity of my stopping place on the Eliva-Comi (an inland 
lake), so that I was able to take a very good cast of it. I hope to 
be able to take a cast of the next animal I shall kill, but I cannot 
Predict at what time and place I shall get a full-grown male go- 
pra and whether the circumstances will allow me to take a cast 
im. 
1 
From a letter to Mr. H. A. Ward, Rochester, N. Y. 
