HA R D WICKE' S S CIENCE- G SSI P. 



177 



authenticity of a worked flint professing to belong to 

 the River-drift Period. ' : * 



[No. 81] (Fig. 84) is a flake of simple form which 

 does not call for any special remark in this place. It 

 is given as a sample of the flakes which are most 

 usually met with. 



I am not aware that any palaeolithic implements, 

 apart from those at Church Field, have hitherto been 

 found in the Ravensbourne valley, but perhaps if any 

 reader of this paper knows of such a discovery, he 

 will be kind enough to give, in these columns, any 

 particulars he may think fit. 



in the region of the dorsal line, which is broadly 

 white. The whole of the larva is thickly sprinkled 

 with minute white spots, which form a continuous 

 and distinct sub-dorsal line on either side. The 

 spiracular line is rather broad and of a beautiful 

 primrose colour, penciled above, in the last skin, with 

 a fine black broken line, and having the spiracles, 

 which are white bordered with black, as a lower 

 margin. On the eleventh segment the lateral line 

 commences to drop, and, leaving the last spiracle (i.e. 

 that on the twelfth segment) above it, terminates at 

 the base of the last pair of prolegs. The margins of 



Fig. 83. 



; EARLY STAGES OF T^ENIOCAMPA 

 INCERTA. 



By Claude Morley. 



BEING unable to find any satisfactory or accurate 

 description whatever of this very common 

 caterpillar, it may be as well, at this time of the year 

 when they are becoming full fed, to lay one, by which 

 they may be easily recognised, before those who, 

 taking the pupse in plenty from oak, sallow, lime, and 

 various kinds of poplar-trees in the winter, have yet 

 no idea of the elegance of their larvae. 



I describe from living larva; now before me. The 

 ground colour is a pale pea-green, becoming whitish 



* Vide "Ancient Stone Implements," p. 510. 



Fig. 84. 



the anal orifice, at the apex of which the dorsal line 

 ends, are also primrose. The head is pale blue- 

 green and quite destitute of hair. The mandibles 

 and extremities of legs and prolegs are dull yellow. 

 Its extreme length when full fed is about fifteen 

 lines. 



In common, I believe, with the other members of 

 its genus, it has considerable cannibalistic propensities. 

 A nearly full grown larva, now in a chip box before 

 me, is partaking of a hearty meal, apparently con- 

 sidering the soft pupre of his brother who turned four 

 days ago a very great delicacy. He does not eat it 

 with a slow English dogged patience, as he would a 

 leaf, but with a ravenous impatience, continually 

 moving his feet, as if half afraid his meal will get up 

 and want to fight him ! 



In my entomological diary for 1890 I find the 



