ZOOLOGY, AND BOTANY, MICKOSCOPY, ETC. 181 



Lithobius found in Normandy by Gadeau de Kerville) ; {b) indifferent 

 halophilous myriopods (eight species) ; and (c) genuine halophilous 

 myriopods, namely, ScoliopJanes maritimvs, Geophilus poseidonis, Schen- 

 ilijln submarina, Polyxenus lapidwola, and Isolates Jittoralis. 



5. Araclinida. 



British Tyroglyphidse.* — Albert D. Michael is to be congratu- 

 lated on the completion of his monograph on this family. We notice 

 the new genus Fusacarus, the useful diagnostic tables, the list of foreign 

 species, the bibliography, and the beautiful illustrations. The injury 

 to horticulture caused by Rhizoijlyphus echinopus is carefully discussed. 



New Species of Koenenia from Italy.f — F. Silvestri describes two 

 new Italian species of this interesting genus, — A", berlesei, near K. 

 mirabilis Grassi ; and A', subangusta, near A", angtista Hansen. 



€. Crustacea. 



Classification of Malacostraca. X — W. T. Caiman gives his reasons 

 for proposing the following new classification : 

 Series Leptostraca, Clans., 1880. 



Division Phyllocarida, Packard, 1870. 

 Order Nebaliacea, nov. nom. 

 Series Eumalacostraca, Grobben, 181*2. 



Division Syncarida, Packard, 1886. 



Order Anaspidacea, nov. 

 Division Peracarida, nov. nom. 



Orders Mysidacea, Cnmacea, Tanaidacea, Isopoda, 

 Amphipoda. 

 Division Eucarida, nov. nom. 



Orders Euphausiacea, Decapoda. 

 Division Hoplocarida, nov. nom. 

 Order Stomatopoda. 



Spermatozoa of Decapods. § — Alphonse Labbe points out that the 

 figures usually given represent a stage which is not the final one. The 

 fully ripe spermatozoon is only a portion of the spermatid. A whole 

 series of accessory or transitional structures in the spermatid disappear 

 before the spermatozoon is ripe. The ripe spermatozoon includes an 

 anterior acrosome apparatus enclosing the centrosomes, a nucleus, and 

 radiating cytoplasmic prolongations. Labbe describes the remarkable 

 final transformations of the spermatids in Homarus vulgaris and Maia 

 squinado, the spermatozoa of the latter, those of other Decapods (more 

 briefly), and the constitution of the acrosome. 



Phagocytic Organ of Decapods. |j — L. Cuenot describes the special 

 phagocytic organ which is found in the mid-gut gland on the terminal 

 branches of the hepatic arteries. In Pagurids, where the gland is 



* British Tyroglyplmlaj, ii. Kay Soc. (1903) pp. 1-1S3 (pis. xx-xxxix). 

 t Ann. Mus. Zool. Univ. NapoU, new series, i. No. 11, 2 pp. 

 % Ann. Nat. Hist., xiii. (1904) pp. 144-58 (2 rigs.). 



§ Arch. Zool. Expe'r.. 4th series, ii. (1904). Notes et Uevuc, No. 1, pp. 1-14 

 (27 figs,). 



|| Comptes Rendus, cxxxvii. (1903) pp. 619-20. 



