56 



The next slide was one of the larvae of the crab, Porcellana 

 platycheles ; remarkable for the long spines of the carapace. 



Then Chelur a terebrans and Limnoria lignorum were shown 

 and their destructive habits described. Mr. Wells then showed a 

 crab with the parasite Sacculina carcini attached, and gave the 

 life history of the parasite. 



Mr. W. J. Chaffey exhibited and described a rare 

 entomostracan, Polyphemus pediculus, and some rotifers of the 

 genus Asplanchna. 



Mr. W. Parkinson Curtis, F.E.S., then exhibited Eurola 

 selva H.L., a rare Syntomid moth from South America, the two 

 shown being, as far as he could ascertain, the only specimens at 

 present available for examination. The identity had been deter- 

 mined by Sir G. F. Hampson and Professor C. B. Poulton. Mr. 

 Curtis expressed a doubt whether the insect should be allowed to 

 remain in the genus Eurota, as is exhibited what, for a Syntomid, 

 was the extremely aberrant character of vein 8 in the hind wings. 

 He made some remarks on the gradual disappearance of this 

 nervure as one progressed from the less highly developed Arctiedae 

 to the more highly developed Arctiedae and to the Syntomidae, 

 supposed to have been derived from the latter. 



Mr. J. Omer Cooper showed a young salmon (Salmo salar), 

 and described its living, for the first six weeks of its life, on the 

 yolk-sac. He also exhibited a slide of Platyarthrus Hoffmansegii 

 an Isopod which inhabits the nest of the amber coloured ant, 

 Lasius flavus. It is white and entirely blind, a character probably 

 caused by living entirely in ants' nests, as the species is evidently 

 derived from ancestors possessing eyes. 



3rd Feb., 1912. A paper was given by T. B. Goodall, Esq., 

 F.R.C.V.S., F.L.S., entitled "With the 

 Whalers at Durban." Various exhibits were used by way of 

 illustration. 



25th April, 1912. A paper was read by W. Parkinson Curtis, 

 Esq., F.E.S., " On Order and Method in the 

 formation of Collections of Insecta and Aves." The paper is 

 printed on page 71. 



25th May, 1912. An Excursion to Poole Park was made, and 

 many interesting forms of pond life were found. 



29th June, 1912. An excursion was arranged to the ponds near 

 Queen's Park and, by kind permission of Mr. 

 Cooper Dean, the members visited the ponds in his private park, 

 where a fine collection of Rotiferae was made. The party then 

 proceeded to the pond in Shiphouse Lane, where many specimens 

 of pond life were obtained. AfFerwards Strouden's pond was 

 visited, but proved disappointing. 



