ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 35 



Ostracod from Middle Devonian.* — Frederick Chapman describes 

 Primitia yassensis sp. n., based on an isolated specimen from the Middle 

 Devonian of New South Wales. It is nearly allied to P. scaphoides 

 Rupt. Jones, and belongs to the group of which P. munduld (Upper 

 Silurian to Lower Devonian) is the central type. He also describes a 

 patch of ostracodal limestone from the same district, showing that several 

 other genera besides Primitia are probably present in the Middle 

 Devonian limestone of Australia. 



Annulata. 



Parasitic Eunicid.f — M. Caullery describes Labidognathus parasiticus 

 g. et sp. n., a Eunicid Polychsete of parasitic habit. A few cases of Poly- 

 chaetes inside other Polychastes have been previously recorded : Lom- 

 briconereis (?) in Marphysa sanguined, Oligognathus bonelhse in Bonellia, 

 Haematocleptes terebellidis in Terebdlides stromi, Labrorostratus parasiticus 

 in various Syllids, Oligognathus parasiticus in Spio mecznikovianus, all 

 showing some retrogressive characters, e.g. as regards jaws, parapodia, 

 pigment, mucous glands of the ectoderm. Caullery's new instance was 

 found in a Terebellid from near Timor. The parasite was probably in 

 a peri-intestinal blood-sinus ; it had over a hundred segments. The 

 prostomium is without eyes or appendages ; the same is true of the 

 buccal and the succeeding segment. From the second metastomial 

 segment on ivards there are slightly developed parapodia. The maxillary 

 apparatus is of the Eunicid type, but slightly reduced. 



Species of Pristina.t. — H. E. Hayden, jun. describes three new 

 species of Naiads in the genus Prist ina from Virginia and Texas. They 

 were found in ponds and aquaria along with species of Dero and other 

 fresh-water Oligochsets. One of the new forms, Prisiina antenniseta, 

 was remarkable in showing well-developed gonads at a time when the 

 animal was actively engaged in the process of fission. 



British Leeches. § — L. A. L. King gives a welcome list of leeches 

 found in the Glasgow district. The Rhynchobdellidae included Tra- 

 chelobdella sp. from Acanthias vulgaris; Poritobdella muricata from 

 skates; and three from fresh water —Protoclepsis tessellata ("large 

 gelatinous-looking leeches, translucent, greyish green," sometimes 

 flecked with pigment, sometimes almost transparent, feeding mi water- 

 fowl) ; Glossosvphonia tuberculata ,• and Helobdella stagnalis. The 

 Arhynchobdellidae included Hsemopis sanguis uga and Herpobdella 

 octoculata both "common in Possil Marsh. Without any systematic 

 search, six, or possibly seven, of the thirteen known British species 

 were found around Glasgow and the Clyde Sea area. 



* Journ. R. Soc. N.S. Wales, xlvii. (1914) pp. 244-7 (1 pi.). 

 + C.R. Soc. Biol. Paris, lxxvii. (1914) pp. 490 3 (4 figs.). 

 % Trans. Amer. Micr. Soc, xxxiii. (1914) pp. 135-8, 

 § Glasgow Naturalist, vi. fl91t) pp. 39-47. 



D 2 



