THE ESSEX FIELD CLUB. 253 tow-net, chiefly by Messrs. Fitch, Crouch, and W. Cole ; but the swirl of the water as the barge was pulled along hindered the success of their endeavours; and as Mr. Crouch opined, better results would probably be obtained by carefully work- ing in the more quiet backwaters. In Mr. French's paper in the Essex Naturalist (vol. ii., pp. i and 46), many species are recorded from the Chelmer near Felstead. The results of the day's work were rather disappointing, only eighteen species being on record, as shown in the following list. Nearly all of these were taken alive, and were exhibited in a small aquarium brought for the purpose. A considerable number of caddis cases (Phryganidae) were observed on the water weeds, some formed of stones, twigs, &c., whilst others were thickly covered with adherent shells, chiefly of Sphaerium. LIST OF AQUATIC MOLLUSCA OBSERVED IN THE CHELMER, AUGUST 8th, 1891. Some interest was evinced in two Musk Beetles (Aromia moschata) that were taken off the pollard willows. Only one butterfly, Vanessa io (the Peacock) was seen. Our President boxed several moths off the tree-trunks—the "Yellow-tail" (Liparis auriflua), the "Dagger" (Acronycta psi), the "July Highflyer" (Ypsipetes elutala) being the most abundant. As the tow-rope swept over the reeds and sedges many moths and Phryganids, &c., were disturbed but not secured. The "Scorpion Fly" (Panorpa communis) was also abundant, and its curious structure attracted notice. During the afternoon, Mr. T. V. Holmes, F.G.S., read a very interesting paper on "The Geology and Scenery of the Club's Voyage from Maldon to Chelmsford, August 8th, 1891," already printed in the Essex NATURALIST (ante, pp. 197-202.) The paper was illustrated with geological maps and sections. Cordial votes of thanks were passed to all who had assisted in the success of the meeting. Most ample provision of light refreshment was provided on board by our kind "skipper," Mr. Fitch, and somewhat late in the afternoon a combined luncheon and tea was partaken of in the garden of the Paper (Livermore's or Huskett's) Mill, the use of which was kindly granted by Mr. Pharaoh Byford. After luncheon, an Ordinary Meeting (the 126th), was held for the pro- posal and election of new members, Mr. Fitch, President, in the chair. The following were duly elected : Messrs, J. H. Chapman-Coombs, A. H, Gray, and C. F. Osomond. On the motion of the President, a special vote of thanks was passed to Mr. Byford and family, for allowing the luncheon to be served in their grounds, and for their kind aid in many ways given in the arrangement of the details of the meeting.