128 ACCOUNTS, ETC., OF THE BRITISH MUSEUM. 



Aiiitnonites from Somerset (Mockler coll.), and from Dorset des- 

 cribed and figured by A. E. Trueman, 1919, Q.J.Q.S., vol. Ixxv 

 (W. D. Lang coll.) ; Upper Jurassic Ammonoids from the Balearic 

 Islands (D. M. A. Bate coll.) ; Cretaceous Ammonoids and Nauti- 

 loids from Aston Rowant, Oxon. (Withers coll.) ; a Cretaceous 

 Nautiloid from Egypt (Dudgeon coll.) ; Eocene Nautili from Essex 

 (Hazzledine Warren coll.) ; Miocene Nautiloids from Malta (J. C. 

 Walton coll.). 



A Triassic Ammonite, Discophyllites cf. ehneri, from New 

 Zealand, described by C. T. Trechmann, 1917, Quart. Journ. Geol. 

 Soc, vol. Ixxiii, p. 184, pi. xvii, fig. 7, (Trechmann coll.) ; and 

 a Nautilus from the Chalk Rock of Aston Rowant, have been 

 mounted and exhibited in wall-cases 12 and 2. 



Number of Mollusca registered : — Cephalopoda, 294 ; Gast- 

 ropoda, 779 ; Lamellibranchia, 616. Total, 1,689. 



Arthropoda (Gallery 8 and Workroom). — The acquisitions 

 registered, labelled, and incorporated include Lower Silurian 

 Ostracods from Horderley, Salop (Bather coll.) ; Silurian Anatifopsis 

 from Otisville, N.Y. ; Coal Measures Xiphosura and other arthropods 

 from Rochdale, Lanes. (Sutcliffe coll.) ; Cretaceous crabs from 

 Dakota (Over coll.) ; Decapods from the London Clay of Essex 

 (Hazzledine Warren coll.). 



The registration of the Insects in Amber and Gum Copal, 

 transferred from the Zoological Dept., has been completed. The 

 Insects from Gurnet Bay have been partly re-arranged as their 

 study progresses. 



Insects from the Carboniferous, Rhaetic, and Lower Eocene, 

 and the fossil Millipedes, have been checked and re-registered where 

 necessary, in connection with loans to specialists for determination. 

 An insect wing, the type of Hypermegethes northunibrice, Bolton, 

 (Eltringham don.), and the type-specimens of the Xiphosura, 

 Euproops amice and Belinurtis treeJimanni, have been placed on 

 exhibition. 



Additions have been made to the exhibited series of Cirripedia 

 and of Cambrian Trilobites. 



The slip-catalogues of exhibited specimens, of amber insects, 

 of new genera, and of various additions, have been continued. 



Number of specimens of Arthropoda registered, 595. 



Echinoderma (Gallery 8). — The acquisitions registered, labelled, 

 and incorporated include squeezes of Ordovician Cystids from 

 Girvan ; Cystids from the Devonian of Virginia (Greger coll.) ; 

 Carl)oniferous Crinoids from the Morrow Group of Oklahoma, and 

 the Chouteau Limestone and Fern Glen formation of Missouri 

 (Greger coll.) ; Eugeniacrinids from the Portlandian of Stramberg 

 (Trechmann coll.) ; Balanocrinus from the London Clay of Essex 

 (Hazzledine Warren coll.) ; Blastoids from the Morrow Group of 

 Oklahoma and the Burlington Limestone of Illinois (Greger coll.) ; 

 Asteroids from the Devonian of Bundenbach and North Devon ; 

 Jurassic Echinoids from various European localities (T. Wright 



