10 Cod. 
C(EL1NTE RATA. 
of the Rugosa , and thus supports Haime’s view that the Cerianthidce are 
related to the Rugosa. 
van Benepen (3) combats Boveri’s view that the Cerianthidce pass 
through an Edwardsia stage, and shows that there are profound differences 
between the development of the Cerianthidce and the Ilexactinice. He 
considers that forms constituted like the Cerianthidai wore the source of 
Annelids, Arthropods, and Chordates. He describes seven stages in the 
development of Arachnactis. 
McMurrich (55) discusses very fully the phylogeny of the Anthozoa, 
and gives a family tree of the group. He considers it probable that they 
can be traced back to an ancestral form with only four mesenteries. 
McMurrich (54) gives an account of the segmentation and formation 
of the germ-layers in the Hexactinian Metridium. The endoderm is 
formed by delamination, as in all Anthozoa. The same author discusses 
the mode of formation of the first eight mesenteries of Rhoclactis } and 
considers that in this form there is no ectodermal fold, from the stomo- 
doeum entering into the formation of the mesenterial filaments. The 
paper concludes with an account of some of the later stages in the 
development of Aulactinia. 
VON Koch (44) shows that in the budding of Blastotrochus each of 
the two septa of the parent situated in the plane of the longest diameter, 
directly pass into the two primary septa of the bud. 
Schneider (65) says that the spicules of Alcyonium acaule are formed 
by indifferent cells derived from the ectoderm, which coalesce here and 
there into groups, and by fusion give rise to structures which are con- 
sidered to be the matrix element of the spicules. 
Studer (71) calls attention to a case of fission in an Alcyouarian allied 
to Cer&emia. 
Bell (2) describes fine specimens of Gerardici savalia and Antipalhes 
robillardi recently received by the trustees of the British Museum. 
III. — FAUNISTIC. 
Schlater (63) gives, in Russian, an account of the Hydroids and 
Medusae of the Sulu Archipelago. 
Bidgood (4) refers to Professor Weldon’s discovery of Conhjlophora 
lacustris in Norfolk. 
Shepiieard (67) remarks that he has for many years found Conlylo- 
phora in the Chester and Ellesmere Port Canal, three miles from a tidal 
river, the Dee. 
Sciierren (61) states that numbers of colonies of Cordylophora were 
found floating on the surface, attached to weed, on both sides of the 
Thurm, right up to Hickling Broad. 
Sloan (68). A specimen of the Siphonophoran Halistemma was 
observed in St. Andrew’s Bay. Notes on above by Professor McIntosh. 
Crawford (16) gives a list of the Medusae found in St. Andrew’s Bay, 
irom August to May. 
