PROCEEDINGS OF SCIENTIFIC SOCIETIES. 455 
one from the Upper Godaveri district—in which he had first observed 
stridulating organs had these organs more highly developed than in the one 
experimented upon at Bombay, and must stridulate far more loudly, for by 
artificially rubbing the parts together in a dead alcoholic specimen he could 
produce a sound almost as loud as, and very closely similar to, that made 
by briskly and continuously drawing the tip of the index-finger backwards 
and forwards, in a direction transverse to its coarse ridges, over the ends of 
the teeth of a very fine-toothed comb. The apparatus, which, as in the 
Mygale, is developed on each side of the body, was situated—the scraper 
upon the flat outer face of the basal joint of the palp-fingers; the rasp on 
the equally flat and produced inner face of the corresponding joint of the 
first pair of legs. On separating these appendages from one another, 
a slightly raised and well-defined large oval area of lighter coloration than 
the surrounding chitine was to be seen at the very base of the basal joint 
of each; these arez constituted respectively the scraper and the rasp ; the 
former was tolerably thickly but regularly beset with stout, conical, sharp 
spinules curved like a tiger’s canine, only more towards the points, some of 
which terminate in along limp hair; the latter crowdedly studded with 
minute tubercles shaped like the tops of mushrooms. He had met with no 
stridulating organs in this position in any scorpions besides 8. Afer and its 
allies; but in searching for them in other groups he had come to the 
conclusion that the very peculiar armature of the trenchant edges of the 
palp-fingers in all the Androctonoide, and in some at any rate of the 
Pandinoide (no Telegonoide nor Vejovoida had yet been examined), was 
nothing but a modification for the same purpose, for the movable finger of 
this pair of appendages when in the closest relation of apposition to its 
immovable fellow could most easily be made to grate upon it from side to 
side so as to produce a most distinct crepitating sound; but when separated 
from it ever so little appeared to be incapable of the slightest lateral 
movement. It was his intention on his return to India to endeavour 
to determine this question, as well as many others relative to the 
species in which the presence of sound-producing apparatus had now 
been demonstrated by careful observation and experiment upon living 
animals. 
Mr. Mason finally handed to Prof. Westwood for identification the larva 
of some homopterous insect with what appeared to be a lepidopterous case- 
bearing larva attached to its last segment by a tough semi-transparent cord. 
The specimens were from Bangalore. 
Mr. Wormald exhibited, on behalf of Mr, Pryer, a small collection of 
Chinese Lepidoptera. 
Mr. G. C. Champion exhibited some rare beetles from Aviemore, 
Inverness-shire ; among them was Pachyta sew-maculata, a Longicorn new 
to Britain. ; 
