2 Crust. 
X. CRUSTACEA. 
INTRODUCTION. 
The Record of Crustacea for 1899 shows a considerable falling off in the 
number of Titles. In 1897 the number of papers published on Crustacea 
exceeded the number now recorded by nearly 70. It is rather difficult to 
determine in what directions this decline has taken place for the number 
of new and other species described shows no signs of a corresponding 
diminution. Comparison of the work of individual specialists of eminence 
will show at once that many of them have published considerably fewer 
papers than in previous years. Thus Coutiere, whose publications on 
Alpheidce are usually numerous, has this year confined himself to the 
publication of a valuable monograph on the group, in which he treats of 
its Morphology, Larval Forms, and Bionomics, the wffiole forming an 
important addition to his systematic papers. 
Alcock has continued his “ Materials for a Carcinological Fauna of 
India,” but by far the most important work from his pen in 1899 was 
“An Account of the Deep Sea Brachyura collected by the Investigator.” 
The work is illustrated by some beautiful plates rendered doubly interesting 
by being the work of Indian native artists. 
Sars, continuing his admirable Crustacea of Norway, has completed 
the second volume, on the Isopoda , and commenced the third, dealing 
with Cumacea. This work promises, when finished, to be one of the most 
completely illustrated works on Crustacea in existence. It is impossible 
to praise too highly so lucid a publication. The same author adds one 
more to the list of his papers on South African Phyllopoda. 
Jones & Woodward bring their monograph on British Palaeozoic 
Phyllopoda to a conclusion. 
Another useful piece of work is Bassett-Smith’s “ Systematic Account 
of the Copepoda parasitic on Fishes.” Here the author diagnoses all 
known genera and gives a list of species and their hosts under each genus. 
No attempt is made to give diagnoses of the individual species but a full 
list of references to already published descriptions is given under each. 
A somewhat scanty list of physiological papers includes a few of interest. 
Iveeble & Gamble on the “ Physiology of Colour change in Hippolyte 
varians ” should be read, as also should Parker’s paper on “ The Photo¬ 
mechanical changes in the Retinal Pigment of Gammarus ,” and Stoller’s 
“ Organs of Respiration of the Oniscidced Langelaan discusses the role 
of the Crustacean Blood Corpuscles in Phagocytosis and MacBride has 
written a short paper on the movements of Copepods. 
Nusbaum, whose previous papers on the Crustacean Nervous System 
have been referred to in other volumes of the Record, adds yet another 
to their number. 
Gruvel’s study of the complemental male of Scalpellum will doubtless 
be found of interest to all students of Cirripedia , and Richard’s lengthy 
and interesting article on the Parasites and Commensals of Crustacea 
should appeal to all interested in the Bionomics of the Class. Parasitic 
Copepoda always come in for a large share of attention. Besides Bassett- 
Smith’s paper referred to above, several others will be found in the list of 
Titles, including one by Schimkewitsch on the Development of Parasitic 
Copepoda. Waite’s “ Antennal gland of Homarusf and Warren’s “ In¬ 
heritance of Parthenogenesis in Daphnia ” are both worthy of consideration. 
Bjelooussoav’s paper on Digestion in Crustacea may also be referred to. 
Ortmann continues his account of the Decapoda in Bronn’s Thierreich. 
Stebbing, in preparing the way for the publication of the Amphipoda 
volume of Das Tierreicli, has announced a number of changes in the 
