Observations on some species of Orina. 9 



laid, and a full month elapsed between the capture of the 

 beetles and the deposit of the larvae. 



I had both sexes of the beetles, and there were frequent 

 pairings, but as happened also with 0. vittigera, nothing 

 came of them in any case in which I separated the beetles 

 for observation — so that I do not know the period of gesta- 

 tion of either beetle. 



At Guarda we met sparingly with two other species of 

 Orina. These were determined by Herr Weise to be 0. 

 gloriosa, Fabr., and 0. tristis, Fabr., var. smaragdina. I 

 brought home one living female of each of these, and was 

 fortunate enough to obtain larvae. 



Both these beetles very much resemble 0. vittigera in 

 appearance, and it was not till I had the larva that I was 

 satisfied of the specific distinctness of 0. gloriosa. 



This species was found near the mill at Cloza. The 

 young larvae were with the parent beetle when I got home; 

 they were clearly laid as larvae, as they were well advanced, 

 had no egg-shells present, and were very like those of 0. 

 vittigera at the same age. Taking them to be, possibly, 0. 

 vittigera, I gave them Peucedanum ostmthium as long as I 

 had any, and then offered them Angelica sylvestris, which 

 they readily took to, in a way that neither beetles nor 

 larvae of 0. vittigera would do. There were only three of 

 them, and two of them fed up and went down. Like the 

 other species they fed up in about a month, during which 

 they moulted three times. 



The other species taken at Guarda, and which Herr 

 Weise has determined to be 0. tristis, Fabr. (luctnosa, Oliv.), 

 var. smaragdina, Weise, has a very smooth disc to the pro- 

 thorax. I thought the beetle seemed attached to Cen- 

 taurea, and fed the larvae on Centaur ea scabiosa success- 

 fully. The remarkable difference between this species 

 and the others is that it is oviparous and not viviparous ; 

 yet the beetles and larvae are very close indeed to those of 

 0. gloriosa and 0. vittigera, and belong to the group of 

 which it is so difficult to distinguish the species, and differ 

 from 0. cacaJite, which is tolerably distinct in both stages, 

 and yet is viviparous like 0. gloriosa and 0. vittigera. 



The egg of 0. tristis is of a very definite firm 

 structure, with a solid shell, from which the beetle does 

 not hatch for several days after it is deposited. The 

 beetle emerges by a longitudinal slit, starting at one apex, 

 and extending down one side of the egg two-thirds of its 



