710 



NOTES AND EXHIBITS. 



Mr. Froggatt exhibited a collection of Thynnidm (Flower- 

 Wasps) comprising 135 named specimens, among them being 14 

 types and many co-types of the species described by Mr, Rowland 

 Turner in his monograph of the family, published in the Society's 

 Proceedings for 1907. These specimens at that time w^ere in Mr. 

 Turner's charge at the British Museum, and were not available 

 for exhibition when the papers were read. 



Mr. T. H. Johnston exhibited an extensive series of Entozoa 

 irom the Barracouta ?i^h{Thyr sites atun Euphr.) — (1) Tetrarhyn- 

 chus sp. (Sydney; Clarence River; Tasmania; Western Australia), 

 An elongated form 5-15 cms. long, with swollen anterior end con- 

 taining the scolex, somewhat like that of Tetrarhynchus reptans 

 Wag.; infesting the muscles. (2) Tetrarhynchus sp. (Sydney), a 

 short thick parasite about 2 cms. long, also from the muscles; the 

 spherical rostella, and the general bodj^-shape, seem to resemble 

 those of T. rugosus. (3) Tetrarhynchus sp. (Sydney; Clarence 

 River), a very small, actively motile cestode, with long rostella 

 and powerful bothria, this immature parasite occurring commonly 

 in and on the intestinal coats, (4) Tetrarhynchus sp. (Clarence 

 River; Sydney), a tiny pedunculated cystic form, found on the 

 mesentery and peritoneum. (5) Sparganum sp (Clarence River), 

 a larval Bothriocephalid, about 1-5 cms. long, found in the outer 

 coat of the intestine. (6) Ichthyotcenia sp. (Clarence River), a 

 young form with a well developed apical sucker; this occurs in 

 the intestine. (7) Echinorhynchus^p.{C\-SixenQ,e River), from the 

 intestinal walls. (8) Immature nematodes, regarded by Dr. G. 

 Sweet, of Melbourne, di^Ascaris marina Linn.; these round worms 

 are extremely common in the Barracouta, occurring spirally 

 coiled in great masses along the whole of the mesentery(Sydney; 

 Clarence River; Tasmania; West Australia). With the exception 



