APPENDIX. 
* 5 * 
Larva of Spindasis lohita. 
CT chitinous tube. RP retractile process, 
soft or fleshy and of a yellowish-white, granulated 
finely except on the tip ; shown fully exserted. 
B yellowish bristles or stiff hairs. L last seg¬ 
ment. S spiracle. There are two of these retrac¬ 
tile organs, one each side, but only one is shown, much 
enlarged and diagrammatic. There is also a trans¬ 
verse slit-like dorsal gland, situated on the middle of 
the back, apparently just between the eleventh and 
twelfth segments. See pages 78 and 79. 
Whilst staying in Macao Mr. F. Muir 
dissected several larvae of the Lycaenids mentioned 
below, and gave me the following notes :— 
“ In Spindasis lohita each retractile process 
on the twelfth segment is formed by a growth of the 
hypodermis which, by pressure of the fluids within the Retractile dorsal process of Spindasis lohita larva. 
body, can be protruded through a hole in the cuticle, and again withdrawn into the body by a pair 
of muscles running from the tip of the process to the floor of the abdominal cavity. No 
glands open on the processes, but no doubt the hypodermis contains glandular cells. There is a 
pair of large glands each opening by a duct at the corners of the dorsal transverse slit on the 
eleventh segment. 
“ In the larva of Catochrysops cnejns a similar mechanism works the processes, and a pair 
of glands open into a transverse]dorsal slit ; but in the specimens I examined the glands were not 
so large as those of S. lohita. 
“ In the larva of Polyommatus boeticus no movable processes are developed ; there is, 
however, a dorsal transverse slit into which a pair of glands open, as in C. cnejus The 
mechanism of these processes appears, therefore, to be almost identical with that of the filaments 
protruded from the anal fork of the larva of the Puss moth (Centra vinula) described by 
Professor Poulton in “The Colours of Animals.” In the case of this larva “protrusion is brought 
about by the pressure of the blood, which drives the filament before it. The process could be 
almost exactly imitated by fastening a string to the tip of the finger of a glove and letting the string 
pass down inside the finger and out at the wrist. The finger could then be withdrawn by pulling 
the string, and protruded by blowing into the glove.” 
The ants which attend the larvae of Spindasis lohita are a species of Cremastogaster. 
