REVIEWS. 99 



Ordinary Meeting. — An immigrant Orthopteron. — Mr. Step exhi- 

 bited a large locust, found alive at large in Covent Garden with a 

 small crowd of timorous watchers around. 



Colour variation in D. sericea. — Mr. Coppeard, a series of colour 

 forms of the water-plant beetle Donacia sericea. 



Ehopalocera from S. Africa.— Mr. Turner, a box of Rhopalocera 

 sent from near Port Elizabeth, S. Africa, including the cosmopolitan 

 Lampides boeticus, a fine series of the Satyrid Leptoneura clytus, and 

 species of Pieris, Terias, Teracolus, Mycalesis. and Pamphila. 



A winter Neuropteron. — Mr. Lucas, the Neuropteron, Hemerobius 

 stigma, now common on Esher Common. 



Variation in P. icarus. — Mr. Leeds, 177 different forms of male 

 Polyommatus icarus, named from the descriptions given in J. W. Tutt's 

 British Lepidoptera. 



REVIEWS AND NOTICES OF BOOKS. 



The Lepidoptera of the Congo. By W. J. Holland. Bull. Amer. 

 Mus. Nat. Hist., vol. xliii,, Art. vi., pp. 109-369, December, 1920. — 

 Dr. W. J. Holland, Ph.D., L.L.D., Director of the Carnegie Museum, 

 Pittsburgh, is to be congratulated on the production of this important 

 contribution to African Entomology. It is entitled "Lepidoptera of 

 the Congo," being a systematic list of the butterflies and moths 

 collected by the American Museum of Natural History Congo Expedi- 

 tion, together with descriptions of some hitherto undescribed species. 



Since the publication of Professor Aurivillus' " Rhopalocera' Aethi- 

 opica " in 1898, no paper on African Lepidoptera has appeared which 

 is of such importance faunistically as the present one. The collections 

 were obtained by Messrs. Lang and Chapin during 1910, and principally 

 at Medje, near the Nepoko River, but many were collected at Mangara 

 and Faradje in the district of the Uelle River, 



Seven hundred and twenty-five forms are dealt with, of which 243 

 are butterflies. Two new genera of Nymphalidae are described, 37 

 forms of new butterflies, and 40 new moths. 



There are 261 pages of text, nine plates in colours, and several text 

 figures. The plates are excellent examples of the photographic 

 process. A feature of the work is the very complete index which 

 gives references to families, genera and species, also species under 

 genera, to synonyms, and to figures. New names of genera, species, 

 and varieties are printed in heavy-faced type, also the main reference 

 is a series of references, whilst synonyms are printed in italics. This 

 sort of index is too rarely found in works on Lepidoptera. 



The forms listed are numbered in consecutive order, and the forms 

 in each genus are similarly numbered. 



A list of the localities mentioned in the paper is given with their 

 approximate longitude and latitude, and we trust that future writers 

 on Lepidoptera will do the same. It is often annoying to be unable 

 to locate a particular place which is very often of too small importance 

 to find its way into a map or gazetteer. Another commendable 

 feature of this paper is a list of the new forms described giving their 

 type localities and page reference. We notice also that Dr. Holland 



