Geological Society. 179 



field darker, lines indistinct, indicated by difference of tint on 

 either side ; first line curved ; basal space paler, with a darker 

 patch on the inner margin near the base; second line running 

 at first slightly outward, then [)arallel to the hind margin, 

 then inwards to beneath the veniform stigma, and lastly 

 vertical to the iinier margin ; the two stigmata dark, with the 

 space between them paler ; the second line is followed by a 

 ])ale space on costa and sometimes also on the inner margin ; 

 a line of black dashes before the fringes, which are silky 

 ochreous. Hind wing greyish fuscous, witli faint indications 

 of a paler submarginal band. 



In the single female the darker tints throughout are almost 

 black, the paler spaces being by contrast whiter ; but this 

 may not be a sexual peculiarity. 



Expanse of wings ]6 millim. 



One female, two males, from S. Lorenzo Island, Oallao. 



Tritoea ferruginea, sp. n. 



Fore wings reddish ochreous, somewhat iridescent, with 

 faint indications of two stigmata and an outer line, which 

 are darker ; a row of dark spots along the hind margin. 

 Hind wings glossy, pale ochreous, darker towards the hind 

 margin, showing a faintly darker submarginal band, which 

 forms a darker spot towards the anal angle. 



Expanse of wings 16 millim. 



One male from Coquimbo. 



[To be continued.] 



PEOCEEDINGS OF LEAENED SOCIETIES. 

 GEOLOGICAL SOCIETY. 



November 11, 1891.— Sir Archibald Geikie, D.Sc, LL.D., F.ll.S., 



President, in the Chair. 



The following commuuicatiou was read : — 



" On Dacrytherium ovimim from the Isle of Wight and Quercy." 

 Ey R. Lydekker, Esq., B.A., E.G.S. 



The Author described a cranium and mandible of Dacrytherium 

 Cayluxi from tbe Quercy Phosphorites, which proved the identity 

 of this form with the Dichohune ovina of Owen from the Uligocene 

 of the Isle of \yight. The species should thus be known as 

 Dacrytherium ovinum. It was shown that the mandible referred 

 by Eilhol to D. Cayliuvi belongs to another animal. 



