1920.] 21 1 



emerged during tlie first few days of July, but as no more appeared I dug up 

 a few, and in each case found fat, healthy-looking^ larvae, apparently about 

 full-grown. The rest I left undisturbed. Close comparison of the larvae with 

 those of full-grown C. campestris revealed certain minor differences, e.g. the 

 head and prothorax in C. (jermanica were more metallic (but as spirit material 

 only of C. campestris was available, this difference may not exist in fresh 

 specimens), the chitinous plates on the segments were darker and rather 

 larger, with slight differences in the arrangement of the bristles upon them. 

 In C. germanica the bristle-bearing tubercle near and dorsal to the base of each 

 of tlie large liooks upon the dorsal liump is tall and conical, with two or three 

 short stout bristles on its apex ; in C. campestris this tubercle is low, much 

 broader across its base than its height, with three longer bristles upon it (viewed 

 dorsally it scarcely appears prominent but looks like a small, almost circular 

 chitiuized plate). The dorsal plate of the posterior pseudopod in C. germanica 

 is fringed apically with 8 stout bristles ; in C. campestris there are 12 or more. 

 The pupa, of course, was not observed.^K. G. Blair, Natural History 

 Museum : August 6th, 1920. 



Curious Monstrosity of a male of Rhizotrogjis solstitialis Linn. — Rhizo- 



fror/us solstitialis has been extraordinarily abundant here during the last week 



or two, and whilst examining several specimens I came across a male with a 



peculiar left antenna. The first three joints are 



normal, the fourth is considerably elongated, 



emarginate inwardlj', and swollen on the outside. 



From the groove on the inner side projects a large 



horny knob, narrow at the base, and widening to 



the slightly hollowed apex. On the rim of this 



hollowed part are a few small bri.stles. This pro- 



j, ({.. jection is quite loosely jointed on to the antenna, 



^y^ and at its base are a couple of smaller projections 



. , ^ n ^j . , underneath (a, tig.). I presume that the origin of 



"■ Antenna, of Rhizotrocfus v ' o/ f _ e 



solstitialis, ^, underside, ML the extra club— for that is what it looks like— 

 was an accident to the insect when in the larva or 

 pupa stage, though in that case it would seem more probable that it would 

 arise from between two joints instead of in the middle of one. I would like 

 to hear of any similar cases in other insects. — George B. Ryle, 6 Cheshani 

 riace, Brighton : Julg 20th, 1920. 



Oxyptilus teucrii Greening near Doncaster. — On July 11th last, 1 took 

 by sweeping in a rough uncultivated field at Hatfield, a " plume " that evidently 

 belonged to the genus O.vyptilus. On looking up Porritt's list of Yorkshire 

 Lepidoptera, I found the only record for the genus was an old and doubtful 

 one of parvidactyhis. On visiting the locality on subsequent dates I found the 

 insect common, but difficult to catch, on Teucrium scorodonia, and concluded 

 that it was teucrii. On sending an example to G. T. Porritt, lie writes: — 

 " Yes, your Plume is undoubtedly O. teucrii, and is a grand addition to the 

 Yorkshire list. Send a record of it to Ihe E. M. M." — H. H. Corbett, 

 3 Thorne Road, Doncaster : July 7th, 1920. 



