SOCIETIES. 123 



one is described and figured in Prof. Westwood's Monograph of the 

 genus Si/stroinis in the ' Transactions ' for 1876. — Mr. J. E. Collin, in 

 further illustration of Dr. Chapman's remarks, exhibited specimens 

 of: — ■{(() Si/xtropus sp. ?, from Buenos Ayres, parasitic on a Bombyliid 

 Lepidopteron (Limncodes ?). This he said was possibly the same as 

 Dr. Chapman would have reared from his cocoons. The species was 

 apparently undescribed, but most allied to S. brasiUensis, Meg. As 

 Prof. Westwood noticed in 1876, the insect is very slender to inhabit 

 so stout a pupa-case, ib) Systropus sp.?, a large handsome undescribed 

 species from Bigot's collection. — Professor Poulton, F.E.S., introduced 

 a paper by Mr. Guy A. K. Marshall, entitled, "Five years' (1897-1901) 

 observations and experiments in the bionomics of South African 

 insects, dealing especially with warning colours and mimicry, with 

 appendices containing descriptions of new species by Col. C. T. 

 Bingham and W. L. Distant." The paper was illustrated by many 

 photographs projected on the screen showing the groups of South 

 African insects of many orders collected by Mr. Marshall, each with a 

 common type of warning coloration. Some of these groups included 

 mimetic species of great interest. An important section of the paper 

 contained the description of a long series of careful experiments con- 

 ducted upon the chief vertebrate and invertebrate insect enemies of 

 South Africa. The number of new facts is so large ; the experiments 

 so numerous and complete ; and the range of observation extended 

 over so many Orders, in addition to the much-studied Lepidoptera, 

 that this memoir places South Africa in the first rank as the country 

 from which the chief evidence in support of existing theories of 

 mimicry, warning colours, &c., has been supplied. A discussion 

 ensued, in which Mr. F. Merrifield. Dr. F. A. Dixey, Prof. Hudson 

 Beare, Colonel Yerbury, Mr. J. W. Tutt, and Prof. Poulton took part. 

 — Mr. Malcolm Burr, B.A., F.L.S., contributed "A monograph of the 

 genus Acrida, with notes of some allied genera, and descriptions of 

 new species," and Dr. D. Sharp, F.R.S., communicated three papers 

 by Mr. R. C. L. Perkins, respectively entitled: — {a) "Notes on 

 Hawaiian wasps, with descriptions of new species"; (b) "Four new 

 species and a new genus of parasitic Hymenoptera (Ichneumonidfe) 

 from the Hawaiian Islands" ; and (c) " On the generic characters of 

 Hawaiian Crabronidae; four new genera characterized." — H. Goss and 

 H. Rowland-Bkown, Hon. Sees. 



South London Entomological and Natueal History Society. — 

 February ISth, 1902.— Mr. F. Noad Clark, President, in the chair. — 

 Mr. South exhibited a specimen of Cydimon {Urania) leihis from St. 

 Kitts, one of the Leeward group of the West Indies. The species is 

 common along the north coast of South America and in Trinidad, but 

 has not hitherto been taken in this island. — Mr. McArthur, some 

 specimens of Eupceciiia yilvicomana taken about forty years ago by 

 Standish, and stated that the species had not since been obtained in 

 this country. — Mr. H. Moore exhibited an exceedingly fine specimen 

 of the orthopteron Sanaa imperialis from Sylhet in North India. — Dr. 

 Chapman, specimens of Hypotia cortical is from the Riviera, a species 

 having some of the characters of the genera Pyralis and Phycita, 

 and for which he had proposed a new genus. — Rev. F. P. Perry, a 



