96 



menoptcra. With I pi. in: Trans. Entomol. Soc. London, 1884. P. II. 



p. 251—267. 

 Keinhard, H., Zwei seltene Giraud'sche Hymenopterengattungen [Ammo- 



planus und Hormìojìterus]. aus: Verhandl. k. k. zool.-bot. Ges. Wien, 



1884. p. 131 — 134. 

 Friese, H., Eine neue Andrenen-Art [Andrena stien'nensisn. sp.]. in : (Katter s) 



Karsch's Entomolog. Nachrichten, 10. Jahrg. Nò. 20. p. 308 — 309. 

 Morawitz, F., Anthidium ChristopM n. sp. in : Horae Soc. Entomol. Ross. 



T. 18. No. 1/2. p. 66—68. 

 Carl et, Gr., Sur une nouvelle pièce de l'aiguillon des Mellifères et sur le mé- 

 canisme de l'expulsion du venin, in : Compt. rend. Ac. Sc. Paris, T. 99. 



No. 4. p. 206. — Ann. Soc. Entomol. France (6.) T. 4. 3. Trim. Bull. 



p. cix— ex. 



Saunders, Edw., Synopsis of British Hymenoptera. Anthophila; part IL 

 Apidae. With 8 pi. in: Trans. Entomol. Soc. London, 1884. P. II. 

 p. 159—250. 



II. Wissenschaftliche Mittheilungen. 



1. Note on the »Segmental Organs» of Serpula. 



By William A. Haswell, M.A. B.Sc. Lecturer on Zoology and Comparative 

 Anatomy, Sydney University. 



eingeg. 3. December 1884. 



The pair of large and conspicuous glands found in the anterior 

 part of the body in the members of this group have been usually regard- 

 ed as the sole equivalents of the »segmental organs« of other Anne- 

 lides. Clap are de, for example \ regards excretory ducts for the 

 generative products as being entirely absent — the ova and spermato- 

 zoa escaping either by rupture of the body wall or by simple perma- 

 nent apertures. 



The true segmental organs, however, which seem hitherto to have 

 escaped notice, are entirely distinct from the so-called tubiparous 

 glands, and, though of a simple type, are not unlike those of other 

 Annelides 2. They are pyriform sacs, densely ciliated internally and 

 with delicate walls, occurring in pairs in all the segments of the ab- 

 domen. They open externally on the sides of the segments by slit- 

 like apertures bordered by strong cilia, and, presumably, open also into 

 the body-cavity, though I have not succeeded in finding the internal 



• »Recherches sur la Structure des Annélidcs Sédentaires«, p. 1:52 — 135. 



2 Claparède asserts the contrary very strongly. »Il est certain qu'il ne se pré- 

 sente nul part chez les Serpulicns d'organes scgmcntaires de la forme typique.« (I.e. 

 p. 1:35.) 



