Relationship between certain West African Insects. 497 
Large black ants were in attendance. By taking my time 
I was able to snip off the leaves and secure both larvae 
and ants on the stem in a test-tube. The soft green bark 
bore numerous puncture marks at the spot where the larvae 
had been feeding. When disturbed, the larvae started 
to run in various directions quite actively. More have 
hatched out to-day (Jan. 6) and with a lens I can see that 
when alarmed, even these exude a tiny drop of fluid at the 
anal extremity, and then run away, frequently backwards.” 
The following material illustrates the above notes :— 
Sixty-eight minute larvae, hatched Jan. 2-4, together 
with the double egg-mass on Triumfetta, another stem 
showing punctures and 10 attendant C. akwapimensis v. 
poultoni—all collected near Oni Clearing, Jan. 4-6, 1912. 
Later stages.—The following note refers to a series of 
10 larvae, or more probably nymphs, which I now know 
to be those of L. altifrons. They were taken in the forest, 
13 miles E., on Sept. 1, 1911, and are accompanied by 
4 of the attendant ants—C. akwapimensis v. poultoni. 
No. 19. “ These insects—attended by a great number 
of ants—were all congregated at the end of a green stem. 
Perfect insects were present with them, but took the alarm 
and flew away directly I touched the stem. The larvae 
or nymphs now sent retreated slowly down the stem, 
crawling backwards and protruding a pink caudal whip at 
the end of which a drop of fluid, the size of a pin’s head, 
appeared. If one attempted to catch them, they ran 
away with great speed or else jumped off suddenly in 
various directions. On examination of the stem on which 
they had been, one always found numerous puncture 
marks for the purpose of feeding.” 
2. Neoxiphistes lagosensis, Dist., gen. et sp. n. (see p. 515). 
No. 50. A company of 9 mature forms of these Mem- 
bracids were found all huddled together on old cortex on 
Dec. 8, 1911, attended by 9 C. akwapimensis v. poultoni. 
These have the same habit of springing away suddenly 
when disturbed, but my note records that in the early 
morning they are more sluggish than later in the day. 
I have never seen companies of this species on a green 
stem. These specimens, which belong to a new genus 
and species described by Mr. W. L. Distant on p. 515, were 
taken in the forest, about 1 mile E. of Oni Camp. 
