236 SCIENCE PROGRESS 



ZOOLOGY. By Chas. H. O'Donoghue, D.Sc, F.Z.S., University College, 

 London. 



[As several of the American journals for the period under 

 review have not yet reached this country they have unfor- 

 tunately had to be omitted.] 



Protozoa. — The papers include " The Case of Trichomonas ," 

 by Hadley {American Nat. vol. li. April 191 7). 



Invertebrata. — The papers include " Occurrence of a Holo- 

 thurian new to the Fauna of Bermuda," by Crozier (Ann. 

 and Mag. May 191 7). 



Keibin in " Recherches sur les Anthomyides a Larves car- 

 nivores " (Parasit. vol. ix. May 191 7) gives a long and detailed 

 study (occupying a complete part of the journal) of the larvae 

 of certain Diptera made with the objects of investigating their 

 economic role and also of adding to our morphological and 

 histological knowledge of the group, and in both points he has 

 been very successful. The larvae are to be found in all sorts 

 of situations, but whatever their habitat they feed carnivorously 

 and often act as destroyers of certain vegetable-feeding larvae, 

 and what is more important, of the larvae of the domestic fly 

 and of Stomoxys calcitrans. All the carnivorous species have 

 not been examined in the same detail, as they cannot all 

 be obtained with certainty. Intermediate forms — sometimes 

 saprophytic, sometimes carnivorous, according to conditions — 

 are known, and appear to indicate how the carnivorous forms 

 have arisen. In addition to attacking other larvae they also 

 attack one another and have developed a strong cuticle partly 

 in order to meet this. They have naturally a well-developed 

 bucco-pharyngeal armature. The paper is well illustrated by 

 figures and fifteen plates. 



Other papers include : " The Identity of the two Amphi- 

 pods, Ampelisca eschrichtii and A. macrocephala, Liljeborg, 

 considered from an Antarctic Point of View," by Chilton; 

 " Description of a new British Terrestrial Isopod (Trichonis- 

 coides scabrous n.sp.)," by Collinge, both in Jour. Zool. 

 Research, vol. ii. May 191 7 ; "A New Tuberculate Terrestrial 

 Isopod from New Zealand," by Chilton (Ann. and Mag. Nat. 

 Hist. April 191 7) ; 



" South African Talitridae," by Stebbing (Ann. and Mag. 

 Nat. Hist. April 191 7); " Notes on Myriapoda — V. On Cylin- 

 droiulus (Lencoiulus) nitidus (Verhoeff)," by Brade and Birks 



