60 THE VICTORIAN NATURALIST. [Vol XXlV. 



leaves. The shape of the leaves is, however, well within the 

 range of variation of the species ; the shade of colouration in the 

 flowers also varies, and the membranous edge, which is unusually 

 well shown in Pritzel's specimen, is feebly developed here and 

 there on the edges of some specimens, forms a distinct irregular 

 margin on others, especially on 348 and 349 of Drummond's 5th 

 Collection, classed by Bentham as var. glaucum. A few scattered 

 hair-like prolongations are present on the edges of some of the 

 leaves, which were apparently overlooked by Bentham. Since 

 the margin may vary on the leaves of the same specimen, it is not 

 possible even to distinguish Pritzel's " species " as a definite 

 variety distinct from var. glaitcum. 



Triglochin turrifera, Lueh., Juncaginaceas = Triglochin 

 CALCiTRAPA, Hook. ? — Naiadaccse. 



The former name was published provisionally (Vict. Nat., 

 1906, p. 43) from material collected and named by Mr. Lueli- 

 mann. 



Mr. Reader suggested {Vict. Nat., 1906, p. 120) that the plants 

 in question could be classed as a variety of T. calcitrapa. This 

 is confirmed by Dr. Graebner, of the Berlin Botanical Gardens, 

 so that the provisional name of T. turrifera may be suppressed. 



Xanthosia silvatica, Diels (Frag. Phyt. Aust. Occid., p. 455) = 

 Xanthosia peltigera, Benth. — Umbelliferse. 



This plant does not differ in any feature from X. peltigera, 

 and Diels' specin]en exactly matches one in the Melbourne 

 Herbarium examined by Bentham. Since this specimen was 

 seen by Diels in May, 1902, it is difficult to see how this remark- 

 able oversight has arisen. 



Ichneumon Maimed by Saw-fly. — During the end of April and 

 beginning of May I had under observation a saw-fly, Perga lewisii, 

 Westw., guarding its larvae on a branch oi Eucalyjjtus amygdalina. 

 On the 6th of May I noticed an ichneumon amongst the larvae, 

 while the saw-fly was on the leaf, apparently contentedly watching. 

 Mr. Edmund Jarvis and myself examined the ichneumon, and 

 found that its antennse and ovipositor were missing. While it 

 was under the influence of a dose of cyanide of potassium Mr. 

 Jarvis noticed it eject some eggs through the remaining stump of 

 the ovipositor. The incident is interesting, as it is probably the 

 first case recorded of this species of Perga having rendered the 

 parasite harmless. In the accompanying exhibit the ichneumon 

 minus its antennae and ovipositor is shown ; the eggs can hardly 

 be seen, as they have shrivelled, but an enlarged drawing is 

 shown. — J. P. M'Lennan. Emerald, Victoria, 8;6/o7. 



