440 



sula, for which the name Nemorhaedus Swettenhami was proposed. — 

 P. L. Sci a ter, Secretary. 



3. Linnean Society of New South Wales. 



May 30th, 1900. — 1) Australian Pselaphidce. By A. Raffray. (Com- 

 municated by A. M. Lea.) Seven genera and seventy-three species are de- 

 scribed, as new, for the most part from a collection made by Mr A. M. Lea; 

 the number of previously described Australian species being about 200. Hav- 

 ing the types of Dr. Schaufuss and of Dr. Sharp at his disposal, the author 

 has been enabled to offer some critical observations on some of the already 

 known genera and species. — 2) Australian Psyllidce. Part i. By Walter W. 

 Froggatt, F.L.S. In this monograph of the Homopterous family Psyllidœ 

 the author gives a general account of the family, and of the classification, 

 with a summary of the work of his predecessors. The species made known 

 by Walker, Dobson, Maskell and Schwarz are revised; and three genera and 

 sixteen species are described as new. The latter comprise two species of a 

 new genus allied to Creiis, Scott (Subfam. Liviince)\ eight species of Rhino- 

 cola, one of Aphalaria, one of Cardiaspis, and one of Spondi/liaspis, together 

 with two new genera, each represented by a single species (Subfam. Ap/ia- 

 larince). — 3) and 4) Botanical. — Mr. Stead exhibited preparations of a 

 pelagic crustacean Galathea sp. (from iy 2 to 2 in. in length), collected by 

 Captain W. Waller, of the s.S. Westralia, between south-eastern Australia 

 and New Zealand; the animals are known to shippingmasters as " Whale- 

 food"; and at times myriads of them cover so large an expanse of water as 

 to impart to it, a uniform red tinge. Also a very handsome and almost per, 

 feet living specimen of the Murrumbidge Crayfishs [Astacopsis serratus, Shaw)- 

 and drew attention to the fact that when this animal is disturbed suddenly 

 it emits a curious hissing sound, resembling somewhat that made by a snake. 

 And two photographs taken at Ben Buckler, Bondi, which showed in a re- 

 markable manner the effect produced by atmospheric erosion, aided by the 

 vibration set up by the waves, on cliffs of the Hawkesbury Sandstone. The 

 disintegration of the cliffs is also considerably helped by the basaltic dykes 

 which here and there intersect the rock, and which, upon decomposing, iso- 

 late large sections. 



Berichtigung. 



In dem Aufsatze von Prof. Vosseier in No. 620 ist p. 394, Zeile 5 v. o. 

 »sexuellen« statt « speciellen « zu lesen. 



Druck von Breitkopf & Härtel in Leipzig. 



