Proceedings of Learned Societies. 131 



Linn. ; taken near Hawes, in Wensley Dale, Yorkshire, in 1805 ; 

 and 



A Description of a Bird, supposed to be the Rallus pusiUus of 

 Latham, shot at the same place in 1807; by W. Fothergill, Esq. ; 

 communicated by Dr. Sims. 



Observations on the Genus Onchidiutn of Buchanan, with a 

 description of a new Species ; by the Rev. Lansdown Guilding, 

 B.A. F.L.S. 



In these observations Mr. Guilding gives the following im- 

 proved generic character of Onchidium ; Class Mollusca ; Ord. 

 Cephala ; Div. Gasteropoda : " Corpus oblongum, repens, sub- 

 tus planum. Penula carnosa pedem totum tegens. Os anticum, 

 longitudinale. Anus posticus, infra. Tentacula duo, retractilia. 

 Oculi terminales" He enumerates six species ; one of them a 

 new one, and thus characterized : " 0. ocddentale dorso fusco, 

 atomis brunneis clevatis sparsis, ventre pallido, lateribus livido- 

 maculatis, brachiis apice divisis." Found in moist places in the 

 mountainous parts of St. Vincent's. 



November 18. — The reading was commenced of a paper, en- 

 titled " Experiments and Observations on the Light and Luminous 

 Matter of the Lumpyris noctiluca, or Glow-worm ; by John 

 Murray, F.L.S." &c. 



December 2. — The reading of Mr. Murray's paper was con- * 

 tinued. 



December \6. — The reading of Mr. Murray's paper was con- 

 cluded ; and the following communications were likewise read. 



Observations on some of the terrestrial Mollusca of the West 

 Indies ; by the Rev. Lansdown Guilding. 



A.mong the species described in this paper were llcUcina occi- 

 dentalis, corpore livido, dorso tentaculisque atris, oculis pronoi- 

 nulis ; — in montibus sylvosis Sancti Vinccntii. Bulimus hcemas- 

 tomus^ corpore olivaceo-nigro, corrugato : pede subtus pallido : 

 capite bifarlam crenato ; in duiiietis Antillarum. Bulimidus 

 stramineiis. Pupa undiilata. 



An Account of some rare West Indian Crabs ; also by Mr. 



Guilding. 



January ^0, 1824. — At this meeting a collection of Birds, in- 



