3 o8 SCIENCE PROGRESS 



Stevenson adds substantially to our knowledge of Klossiella 

 tnuris {Quart. Jour. Micro. Sci. vol. lxi. May 1915) and 

 Fantham and Porter record the natural occurrence of Herpe- 

 tomonads (Leptomonads) in these animals {Parasitology , vol. viii. 

 No. i, 191 5). Although leucocytozoon anatis is found in all the 

 ducks suffering from a new disease, Wickwain has not been 

 able to establish definitely that they are the actual cause of it, 

 but is continuing the inquiry {Parasitology, vol. viii. No. 1, 

 1915). 



Invertebrata. — While searching for examples of Calliobdella 

 lophii, Sharpe had sent to him a worm from the Orkney Isles 

 which proved to be Ganemedes cratere n.g. et s. {Parasitology, 

 vol. v. No. 1, 191 5). Nicoll has described a number of para- 

 sitic Trematodes belonging to new species and new genera that 

 he obtained in looking through a collection of North Queensland 

 fishes {Parasitology, vol. viii. No. 1, 191 5). A new species of 

 tapeworm from the Parakeet Brotogerys tirica is noted by 

 Meggitt {ibid.) and avian sestodes also form the basis of a con- 

 tribution by Beddard {Proc. Zool. Soc. May 191 5). 



The Asterids are divided by some authorities into two 

 groups, the Phanerozonia and the Cryptozonia and Gemmil 

 gives a detailed account of the early development and larval 

 forms of the starfish Porania pulvillus, with a discussion of its 

 bearing on this division {Quart. Jour. Micro. Sci. vol. lxi. pt. 1, 

 May 191 5). He further discusses the occurrence and the 

 cause of a double hydroccele that is to be found in certain of 

 the larvae of Asterias rubens and their changes during develop- 

 ment and metamorphosis {ibid.). 



The Arthropoda again come in for a number of papers. Meek 

 has an account of the Mitotic spindles in the spermatocytes of 

 Forficulaauriculariawhichcontinues and to someextent modifies 

 his previous measurements on the mitotic spindle, and the 

 deductions to be drawn from them {Quart. Jour. Micro. Sci. 

 vol. lxi. pt. 1, May 191 5). Robinson has examined the tick 

 Amblyomma herbracium, and the variability in its size {Para- 

 sitology, vol. viii. No. 1, 1915). Two interesting papers by 

 Harrison deal with the Mallophaga. In the first those obtained 

 from Apteryx, with their relationships, are enumerated, and it 

 would appear that closely allied species of birds are infested 

 with closely related parasites. The second gives a general 

 account of the respiratory system in the group, and the value 



