1911.1 239 



on the strigil of a § of the same ant from the same locality. This species is 

 new to Britain. Mr. C. O. Waterhouse exhilnted larvae of a species of Hypo- 

 derma received from India from Mr. J. E. Middleton, with a note that they had 

 been taken from a gazelle and were probably an undescribed species. Mr. 

 Waterhouse expressed the strongest doubts as to the possibility of determining 

 a species of Hypoderma from the larvae. There is, however, no Indian Hypoderma 

 described hitherto. Mr. F. Enock exhibited a photomicrograph of a new species 

 of Mymar, which he has named Mymar regalis, accompanied by one of M. pul- 

 chellus for compai-ison, captured June 3rd, 1911, at Burnham Beeches. The 

 posterior wings are greatly elongated into a very narrow battledore with six 

 long hairs on the lower margin, and the anterior wings are stu-rounded with 

 sixty long hairs — instead of the thirty-five of Mymar pulchellus. Mr. H. Row- 

 land-Brown exhibited some drawers of Miss Fountaine's bred series of African 

 Charaxes. Dr. Chapman exhibited a box of insects to illustrate a case of 

 mimicry, remarking that in March and April, both at Hyeres and at 

 Amelie - les - Bains, his attention was attracted to a Reduviid bug, Pirates 

 hybridus. Scop. He followed up one or two on the wing, taking them 

 for Pompilid Hymenoptera, and when they settled on the ground their 

 movements were precisely those of Pompilus when hunting on the ground — 

 sharp, active, jerky, and taking wing at once if alarmed. Tlie red colouring on 

 the elytra was, when running, much like the red of a Pompilid body between or 

 under the wings. On picking up the bug, it often occurs that one is stung, 

 about as sharply as many Pompilids do, and some are fairly proficient therein. 

 The sting is of course the thrust of the beak or proboscis, of which not a few 

 Reduviid bugs can make effective weapons of defence. The sting enhances the 

 resemblance to an Aciileate. Dr. Chapman also read the following note on a 

 nest of Polistes gallica : "At Hyeres. on March 29th, 1911, at 10.30 a.m., with a 

 gale from the east (Sirocco), sky overcast and a few drops of rain, I found, on 

 turning over a stone, under its edge, a small nest of Polistes gallica. The nest 

 consisted of eight small cells, in each of five of which was one egg. It could not 

 have been fovmded very long. Under it (above it before the stone was turned 

 over) there rested not one ? hvd two 9 ? side by side. The advancement of 

 the nest showed that it was impossible for one of these to be a worker reared in 

 the nest. Were they working together, or was one only a casual visitor, taking 

 shelter during the inclement weather ? In the latter case would it not have 

 been regarded and treated as an enemy, instead of both resting together in a 

 thoroughly friendly way ? " Dr. Chapman also exhibited some well-grown larvae 

 of Callophrys avis from the Riviera. Prof. Poulton exhibited on behalf of Mr. 

 A. H. Hamm, assistant in the Hope Dept. of the Oxford University Museum, a 

 case of insects illustrative of certain associations of mimetic British Hemiptera- 

 Heteroptera, with their Hymenopterous models, and communicated a paper from 

 him. His chief object is to record the fact that the Hemiptera are to be found 

 in the localities frequented by their models, and often in their company. Field 

 observations are especially important in the mimics of insects, such as the 

 Hymenoptera Aculeata, with extremely characteristic habits and movements. 

 Prof. Poulton exhibited a family of Papilio dardanns, consisting of the trophonius 

 parent and the fifty-five offspring reared from her eggs by Mr. G. P. Leigh, 



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