8 Mr. G. C. Champion and Dr. T. A. Chapman's 



a few of the latter are only about half the length of the 

 fully developed larva. This line of investigation is one 

 that I have little acquaintance with, and the specimens 

 examined were brought home in glycerine, and did not 

 seem to be so satisfactory to handle as fresh ones, so that 

 I cannot give such full details as are desirable. 



The remarkable structure of the penis and its great 

 length may or may not have some relation to the fact of 

 fecundation of the ova taking place in the ovarian tubules. 

 I do not attach much importance to the frequent pairings 

 observed in captive specimens, especially as these led to 

 no progeny being developed, i. e. I doubt whether the 

 successively deposited larvae are the result of successive 

 fertilisations, as this would imply an extraordinary form 

 of superfcetation. I incline to think that the succes- 

 sively deposited larvae come forward in the order they do, 

 in consequence of the amount of nutriment supplied them 

 leading to their maturing at recurrent periods. I express 

 the opinion, not, as holding it with any tenacity, for which 

 I have little grounds, but merely to point out one of the 

 many physiological problems that this case presents. 



Another Orina, which we met with in quantity at 

 several places, especially in the Val Roseg at Pontresina, 

 is one of which we had little doirbt as to the correct 

 determination, and this has been confirmed by Hen* 

 Weise. Its characters are more definite and distinctive. 

 This is Orina cacaliw, Schr., of which we found both larvae 

 and imagines on a species of Adenostyles, and in a tall 

 JSolidago-like Senecio, probably S. ncmorensis. 



The larvae were not very numerous, and were in the 

 2nd, 3rd and 4th instars, but we could find no young 

 ones, nor any gravid beetles. 



The beetles of this species brought home would eat 

 coltsfoot (Tussilago farfard), but obviously did not like it, 

 and I found they did better, but not well, on groundsel, 

 Senecio vulgaris. 



Of all the beetles I brought home and fed here, none of 

 0. vittigera and only one of 0. cacalim produced young. 

 This, however, enabled me to see the young larva, and to 

 determine that this species produces larvae and not eggs. 



These larvae were not laid tilL September, and some of 

 them died. Some laid on September 11th moulted for 

 the third time on the 28th, and these, the last deposited, 

 seemed to thrive on groundsel. Only ten or twelve were 



