PROCEEDINGS OF SCIENTIFIC SOCIETIES. 369 
Lord Lilford exhibited, and remarks were made on, a scries of skins, 
skulls and horns of the Wild Sheep of Cyprus, Ovis ophion (Blyth). 
Mr. F. Crisp exhibited slides, prepared at the Zoological Station of 
Naples, illustrating the early stages of the life of Invertebrates. 
A paper was read by Mr. F. Maule Campbell, “On certain Glands in 
the Maxillz of Spiders.” These glands, to which he attributes a secre- 
tory function (probably salivary), are found in Teyenaria domestica, have 
apertures on the inner side of the upper face of each maxilla thence 
inclining towards the mouth. hey are ring-like in figure, with an enclosed 
disk, and with tegumentary folds at their outlets. The glands and 
apertures increase in number with age, and the ducts tend to become 
chitinous. Glands varying somewhat in structure, but evidently similar in 
kind, exist in species of Linyphiide, Theridiide, and Epeiride. 
Mr. Stuart O. Ridley made a communication “On two cases of incor- 
poration by Sponges of spicules foreign to them.” In a species of the genus 
Ciocalypta, Busk, the dermis contained spicules which belonged to a species 
of E’speria, and which latter sponge had been obtained in the same haul of 
the dredge. In another example of Alebion, spicules also derived from 
Esperia, were likewise obtained. Thus, the author points out, an element of 
error might arise from one sponge containing skeletal structures accidentally 
derived from a neighbouring sponge of a different genus and habit. 
Prof. Allman called attention to a remarkable Medusa first observed by 
Mr. W. Sowerby in the fresh-water tank containing the Victoria regia at 
the Botanic Gardens, Regent’s Park. He described the specialities of 
this small but elegant organism, whose congeners are altogether marine 
in habit. How the swarms could have come into or been developed in the 
tank, for the present remains doubtful, for no fresh water had been put into 
the tank for some years, nor has any sea-water been added, or other material 
likely to have contained ova been introduced. The name Limnocodiwn 
Victorié has been given by Prof. Allman to this heretofore unknown form. 
A short note from Prof. Lankester concerning this same Medusa was also 
read, and living specimens were exhibited by Mr. F. Crisp. 
Mr. F. M. Campbell communicated a second paper “On the stridu- 
lating organs of Steatoda guttata and Linyphia terebricola.” A stridulating 
organ has already been described by Professors Westering and Mason 
Wood in certain other spiders; the present observations demonstrate 
its existence in both sexes, and the essentials of the structure are now 
given in detail. 
Dr. J. K. Dobson, in “Notes on Aplysia dactylomela,” a specimen 
obtained at Bermuda, but not distinguishable from the species inhabiting 
the Cape Verde Islands, showed that there is inequality of size of the right 
and left moiety in the dental rows of the lingual ribbon, and he described 
other structures appertaining to the mandibular plates. 
3B 
