40 NATURAL SCIENCE. July. 



described, of which only the most remarkable can be referred to. 

 Callozostvon mivabilis was taken from a depth of 1,675 feet, and at the 

 most southerly point attained during the cruise ; the mass has the 

 appearance of a large annelid worm, over three-fourths of the 

 surface of which the beautiful primnoid polypes are attached ; 

 several species of the genera Stvopliogovgia and Dasygorgia are 

 described. Numerous additions are made to the Isidae, and one 

 Bathygorgia profunda was dredged from a depth of 2,300 fathoms 

 between Yokohama and the Sandwich Islands. Many new species 

 of the genera Stenella and Thouarella were found. Pvimnoides sertularoides 

 dredged off Prince Edward Island constitutes a peculiar type among 

 the Primnoidae. Several new genera of Muriceidae, with numerous 

 species, were found among the Gorgonidae : two merit particular 

 mention, Platycaidos danielsseni from shallow water at Banda, and 

 CallisUphanns koveni from a depth of 420 fathoms off the Island of 

 Ascension. The genus Scirpeavella, is made for four new species 

 from the Pacific. Among the Briareidae, Kevoeides koreni, is described 

 as a new genus and species from Japan. Among the Melitodidae 

 many new species of Melitodes and Pavisis are described. 



From even such a hasty glance at the general results of these 

 reports it will be seen that most important contributions to our^ 

 knowledge of the structure and affinities of the Alcyonaria were 

 made by Moseley, while our knowledge of the existing species has 

 been extensively added to. 



E. Perceval Wright. 



The Antipatharia collected by the " Challenger " were fairly 

 numerous, and formed the subject of a really brilliant memoir by the 

 late George Brook. Before the appearance of this volume, the 

 zoology of this group of zoantharians was in hopeless tangle, and it 

 was practically impossible to obtain a satisfactory determination of 

 any common species. Brook succeeded admirably in putting the 

 group in order, and his monograph will doubtless serve as the 

 standard work of reference for many years to come. But, apart 

 from the value of this report to the systematic zoologist, the interest 

 of the purely morphological results is undoubtedly very great. The 

 occurrence ot an interesting form of dimorphism in certain genera, 

 and the presence of branched retractile tentacles in the new genus 

 Dendrobrachia (the type of a new family), are two of the most 

 important points which Brook's brilliant monograph described for the 

 first time. 



S. J. HiCKSON. 



The Actiniaria. — As the brothers Hertwig, in the first of their 

 "Studies on the Theory of Germinal Layers," had written an 

 exhaustive treatise upon the structure of sea-anemones, it was 

 natural that the " Challenger " material should go to one of them. 

 The report was published in vol. vi., but a supplement appeared in 



