Oeological Society. — Miscellaneous, 315 



PROCEEDINGS OE LEARNED SOCIETIES. 



GEOLOGICAL SOCIETY. 



January ISth, 1909.— Prof. W. J. Sollas, LL.D., Sc.D., F.R.S., 

 President, in the Chair. 



The following communication was read : — 



' On the Genus Loxonema, with Descriptions of New Proterozoic 

 Species.' By Mrs. Jane Longstaff {n6e Donald), F.L.S. 



There is some confusion with regard to the type of the genus 

 Loxonema, which has arisen from the confounding of the Silurian 

 Terehra (?) sinuosa of Sowerby with the Devonian form which Phillips 

 called Loxonema sinuosiDn. This matter is discussed, and the 

 Author, following Liudstrom, Eoken, and Perner, takes L. sinuosum, 

 Sowerby as the type, in the absence of sufficient reasons to the 

 contrary. If this be done, the other two types mentioned by Phillips 

 cannot remain in the genus, one belonging to the genus Macro- 

 cheilina and the other to Zygopleura. This paper deals simply with 

 Ordovician and Silurian species, therefore only a few subgenera are 

 referred to — Hhabdostrojyha, Don., and Stylonema, Perner. 



The diagnosis of Loxonema is amended, and a note given as to 

 the true range and the geographical distribution of the genus. 

 Descriptions are given oi Loxonema simwsum, Sow., of L. inticmescens, 

 Lindstr., and of L. striatissimum, Salt. MS., and six new species and 

 one new variety are described of this genus. Rhahdostropha pseudo- 

 fasciatum, Don., and RJi. Orindrodi and a new species of this 

 subgenus from Stoke Wold in the Lower Ludlow Beds are next 

 described. This is followed by a description of two new species 

 of the subgenus Stylonema — one from the Chair of Kildare and 

 the second from Mulloch Hill. In conclusion, a new species of 

 Hormotoma from the Llandeilo Flags of Builth Bridge is described. 



MISCELLANEOUS. 



On the Generic Name Chcerops, Ruppell. 

 By J. Douglas Oqilbt. 



To the Editors of the Annals and Magazine of Natural History. 



Gentlemen, — Having been engaged lately on a revision of the 

 bodian labrids of Queensland, the correct name of the genus com- 

 monly known as Chcerops came duly up for consideration, with the 

 result that I find that the two Bleekerian names Choirodon and 



