Zoological Society. 367 



Pedes antlci gracillimi. /Ihdomeii maris lanceolatum, segmentis a tertio 

 ad sextiim coalitis. 



1. Arcania Eiinaceus, Ilerbst. Corpore atque membris dense spinosis, 

 spinis spinulosis. 



2. Arcania 1 l-spinosa, De Haan. " Thorace spinuloso, spinulis obtusis, 

 ambitu 11-spinoso, spinis acutis simplicibus ; brachiis granulatis, digitis 

 manibus longioribus." 



3. Arcania iwvem-spinosa, i\dams & Wliite. " Tiiorace Isevi, granuloso, 

 marginibus latero-antevioribus spinis duabus, latero-posterioribus spinis 

 duabus, posteriore spina longa recta." 



4. Arcayiia septem-spiiiosa, Bell. Testa paulo latiore quam longiore, 

 tuberculata, raargine spinis septem tuberculatis armato, laterali utrin- 

 que reliquis longiore. 



5. Arcania tuberculata, Bell. Testa paulo longiore quam latiore, omnino 

 tuberculata, margins spinis novem tuberculatis instructo; brachiis gra- 

 nulatis, manibus laevibus. 



6. Arcania gracilipes, Bell. Testa granulosa, tuberculis quindecim supra, 

 et tribus ad marginem posteriorem instructa ; pedibus anticis tenuis- 

 simis. 



7. Arcania Icevimana, Bell. Testa granulata, tuberculis nnmerosis di- 

 stinctis, ad marginem spinis novem simplicibus armata ; manibus 

 glabris. 



Genus Iphis, Leach. Testa rhomboidalis, transversa, angulis rotundatis, 



utrinque spina longissima horizontali armata ; fronte emarginato. 

 Species unica, Iphis septemspinosa, Fabr. 



Genus Ixa, Leach. Testa elliptico-rhomboidalis, processu utrinque sub- 

 cylindvico a regione branchiali producto ; regionibus sulco profundo se- 

 paratis. Orbita supra bifissa. Pedipalpi externi caule exteriore lato, 

 interiore longiore. Pedes filiformes. 



Species unica, Ixa cylindrus, Fabr. 



Read also, a " Notice of a species of Carabideous Insect, Helluo 

 (Acanthogeiiys) myrmecophihis, Westw., found together with its 

 larva, in Ants' nests in Ceylon, by G. H. K. Thwaites, Esq., 

 F.L.S." By J. O. Westwood, Esq., F.L.S. This paper was 

 accompanied by figures of the larva and imago states of the insect. 



ZOOLOGICAL SOCIETY. 



June 27, 1854. — Dr. Gray, Vice-President, in the Chair. 



Descriptions of three new species of Titmice. 

 By Frederic Moore. 



Fam. PiPRiD.E, Vigors. Subfam. Pariana. 

 Genus O rites, Moehring. 



1. Orites? leucogenys, Moore. 



Colour above grey, tinged with pinkish on the rump : before the eye 

 and a broad streak over it black, passing to mixed black and grey 

 on the nape ; the centre of the head dusky reddish-isabelline j base 



