ZOOLOGY AND BOTANY, MIOROSOOPY, ETC. 229 



waters, where two varieties are found, one of which forms tuft-like 

 colonies, while the other branches but little. For a long time the 

 author was unable to convince himself of the locomotor powers of 

 Cristaiella miicedo ; Alcyonella fungosa, like some other Polyzoa, has 

 two kinds of statoblasts. One of the commonest species in Bohemia 

 is Plumatella repens ; a third variety of this well-known form is 

 noticed. 



Monograph of Fresh-water Polyzoa.* — Dr. J. Jullien has an 

 extended paper on the Polyzoa of fresh-water illustrated by 250 

 woodcuts intercalated in the text. 



He recognizes two sub-classes, the first of which is that of 

 B. lophopoda (Dumortier), in which there are two tribes ; the first is 

 B. loph. caduca, with the two families Pedicellinidse and Loxosomidse ; 

 the second B. loph. perstita, with the families Plumabellidse, Lopho- 

 piisidse, and Bhabdopleuridse ; the second sub-tribe, B. infundibulata, 

 (P. Gervais), contains the two families Paludicellidse and Hislopidse. 

 The author gives definitions of the families, genera, and species. A 

 new genus, Hyalinella, is instituted for Plumatella vesicularis Leidy. 

 A full description is given of the woodcuts, but the manner in which 

 the author has given his " synonymy " seriously interferes with the 

 usefulness of the work for systematic zoologists. 



y. Brachiopoda. 



New Rhjmchonella from Japan.f — Dr. T. Davidson describes 

 Bhynchonella doderleini, a new spinose form from Japan, which he 

 regards as the most noteworthy of all living Ehynchonellidse. The 

 spines, w'hich project from each rib, are arranged in regular rows, 

 and exhibit, therefore, an interesting survival of a form of shell 

 ornamentation which formerly prevailed among the Palaeozoic Pro- 

 ductidas, &c., and the oolitic Spiriferidse and Ehynchonellidfe. No 

 8j)inose Brachiopod is known from the cretaceous or tertiary 

 periods, and this is the first example of the kind among living 

 species. 



Arthropoda. 

 o. Insecta. 



Morphology of Insect Ovaries,:}: — Prof. A. Sabatier refers to a 

 previous paper, wherein he suggests that the nutritive cells in the 

 ovary of insects are nothing more than eliminated elements, repre- 

 senting true egg-follicle cells. There are three varieties of ovaries 

 in insects: (1) where each ovum is surrounded by nutritive cells; 



(2) where all these cells are at the blind end of the ovarian tubule ; 



(3) where these cells are absent. In the present paper he describes 

 only the first variety of ovary, which occurs in Lepidoptera, Diptera, 

 Hymenoptera, and some few of the other orders. The ovarian tubule 

 consists of a structureless membrane, which encloses a cavity filled 



* Bull. Soc. Zool. France, x. (1885) pp. 91-207 (250 figs.). 

 t Ann. and Mng. Nat. Hist., xvii. (1886) pp. 1-3. 

 i Couiptes Reudus, eii. (1886) pp. 61-3. 



