138 the entomologist's record. 



Stridulation in Lepidoptera. — Dr. J. Jordon exhibited Musitrgina 

 laeta from Madagascar, remarkable for its very strongly clavate an- 

 tenna, and the development of a stridulating organ. He compared 

 the process with that occurring m other species of Agaristidae and. 

 Noctuidae. He said that Musvrgina recalled Peurphigostolo, Strand 

 (1909), placed by the author with the Castniidde, but which would 

 on re-examination probably turn out to be Agaristid also. 



Papers. — The following papers were read " Notes on the Rhopalo- 

 cera of the Dollman Collection," by N. D. Riley. "The Male Genitalia 

 of Merope tuber, Newm. (Mecoptera)," by F. Muir. 



The South London Entomological and Natural History Society. 



February 10th, — Breeding contrivances. — Mr. H. Main exhibited 

 a contrivance he was trying in his breeding pots to keep the earth damp 

 and at the same time to avoid staleness and mould. 



Aberration of P. brassicae. — Mr. R. Adkin, a Pieris brassicae 

 with the black apices of the forewings radiated by yellow streaks, taken 

 at Eastbourne in August, 1920. 



Aberration of S. plumaria. — Mr. Hy. Turner, a series of Seli- 

 dosema plumaria from Ireland, C. Tyrone, including a curious streaked, 

 melanic male which he had named ab. intermedia- fumosa . 



A Zygaenid hybrid. — He also showed a Zygaena sent by Mr. Greer 

 from Co. Tyrone as a captured hybrid between Z. louicerd-e and Z. 

 /ilipeiidulae, and pointed out its characteristics. 



P. icarus ab. clara. — Mr. B. S. Williams, Polyommatus icdrus ab. 

 dara from Cornwall and Ireland. 



Variation in P. icarus. — Mr. H. Leeds, a very large number of 

 undersides of female P. icarus showing 130 named forms worked out 

 by Tutt's British Lepidoptera. 



Species of Xyleborus exhibited. — Mr. K. G. Blair, the bark- 

 boring Scolytid beetles Xyleborus dispar and X. saxeseni from Kidder- 

 minster with burrows in plum-tree, and a Heliocopris sp. from Siam 

 with its dung-ball cut to show egg-cavity. 



February 24.th. — New Members. — Mr. W. H. Bristowe, Ashford 

 House, Cobham, Surrey, and Mr. Hy. Ruggles, 146, Southfield Road, 

 Bedford Park, W. 4., were elected members. 



Lantern slides were exhibited as follows. — Mr. Dennis, details 

 of the structure of an Oribatid mite. Mr. Bunnett, of the fish parasite 

 Argulus, species of Protura, and the rasp of the field-cricket. Mr. 

 Step, of Crustacea illustrating devices for disguise. Mr. Main, slides 

 to show ease of manufacture and urged the advantages and utility of 

 this method of illustration. 



Variation in P. icarus. — Mr. Leeds exhibited a very long series of 

 the undersides of the male of Polyommatus icarus each identified as a 

 named form from Tutt's British Lepidoptera. 



M. laektes and T. agrippina. — Mr. Hy. J. Turner, a bred series 

 of Morpho Laertes with a coloured photograph of the larva?, and three 

 Th'ysania agrippina, one measuring eleven inches in expanse, both 

 species sent from Sao Paulo by Mr. Lindeman. 



An African Hemipteron. — Mr. Hy. Moore, the Hemipteron 

 1'lataspis veruricellaris from Nairobi. 



