NOTES ON BRITISH ORTHOPTERA, 1920. 95 
It was kept alive more than four months, being killed on 
January 9th, 1921. The pygidium is well developed, but on 
each side of it, where the callipers should appear, are simply two 
blunt points, which are not even visible in a direct dorsal view. 
This most odd-looking insect I take to be a male from the 
structure of the last segment. 
BuatrropEa (cockroaches).—Several specimens of the indi- 
genous cockroach, Metobius lapponicus, Linn., were seen on June 
9th at one spot on Hackhurst Downs, Surrey. After securing a 
dark specimen I found that the others had sought safety. in 
hiding. On June 26th one was taken at Ramnor, in the New 
Forest, and on September 8th a female was secured near Holm 
Hill (Lucas). The species was taken at Camberley, Surrey, on 
June 18th, and on August 7th, 29th and 30th (Green). Two 
females of the variety nigripes, Steph. of Hctobius panzeri, Steph. 
were taken on the slope of Holm Hill in the New Forest on 
September 4th (Lucas). Blatta orientalis, Linn., Periplaneta 
americana, Linn., and P. australasie, Fabr. were found in 1920 
at the Royal Horticultural Society’s Gardens, Wisley, the set 
including at least one nymph of P. americana (Fox-Wilson). 
On July 29th I received from H. A. C. Stowell a P. americana, 
with rather uniformly tinted pronotum, which was brought to 
him at Alton, Hants, just before that date. It was found in a 
hot-house and apparently had been imported with orchids. On 
November 26th in the warm reptile house at the Zoological 
Gardens in the afternoon a cockroach (clearly P. americana) 
was seen trying to get at a piece of biscuit (presumably thrown 
into the tank for the crocodiles!) This was beside a tiny island 
of stone, while between it and the cockroach were four or five 
inches of very shallow water. The insect clearly was aware 
by some means that the biscuit was desirable provender and, 
after some evident reluctance, crossed (its legs only being in the 
water) to the coveted prize and fed upon it heartily. A leaf in 
the middle helped it to ford the narrow strait. The incident 
was interesting as revealing a considerable amount of resource- 
fulness in the cockroach. 
GryLLopgEa (crickets).—On March 17th in a damp situation a 
fine example of Gryllotalpa gryllotalpa, Linn. was found in a 
cottage garden at Send, near Woking in Surrey; while on 
July 7th a further example, a female, was caught in a cottage 
garden in the same village. The length of the latter from the 
head to the tip of the abdomen was 4°5 cm. (Fox-Wilson). Near 
Rhinefield in the New Forest on May 27th I met with a 
number of nymphs of Nemobius sylvestris, Fabr., the largest 
being about half-grown. I saw no adults. Some time later, on 
July 2nd, I took a male in the Forest, but it was still a nymph. 
There are always plenty of imagines in the Forest in August, 
the late summer being apparently the normal time for adults. 
