122 . KOVITATES ZOOLOGICAE XXIV. 1917. 



they are represented by imperfect specimens or because they belong to genera 

 which seem to me to demand a complete revision. Six of the species were 

 cjrtainly known previously from other countries : they are Hockeria testaceitarsis 

 Cameron, discovered in the Cargados Islands (about 150 miles north-east of 

 Mauritius), Coccophagus eleapfiilus Silvestri, from the colony of Eritrea, MeUttobia 

 hawaiiensis Perkins, Tetrastichus hagetiowii (Ratz.), Euplectrus bicolor (Swed.) 

 Hal., and Encoini/s injelix Embleton. 



Hitherto onlj- two species of Chalcididae were known from the Seychelles, 

 a Chalets and a Tetrastichus. The former was collected by AUuaud in 1892 and 

 was referred by Perez with some hesitation to Chalcis amenochs Walker ; it 

 does not seem to me to differ from the species which I describe below under 

 the name Chalcis sodalis. The Tetrastichus is T. hagenotvii (Ratz.), a parasite 

 of the eggs of cockroaches, very widely distributed ; it is represented in the 

 material under review by numerous examples, and the original types of the 

 species also came from the Seychelles. 



Mr. Scott's collection, containing many new genera, and genera repre- 

 sented by a single species, forms the material for a valuable contribution to 

 our knowledge of the C halcididae, and I much regret having been unable to 

 illustrate all the forms in a suitable manner : those which are represented by 

 few examples, or by a single example, have not allowed of all their characteristic 

 parts being figured ; moreover, the condition of international relationships has 

 increased the difficulties of my study and prevented my making comparisons 

 with the types of certain forms. 



The restricted nature of our knowledge of the Chalcidic'ae of the African 

 fauna, and our still more inadequate acquaintance with those of the Asiatic 

 fauna, do not at present admit of our drawing conclusions from the results of 

 ray work. There are in the collection three species \\hich are undoubtedly 

 common to the faunas of the Sej'chelles and of Europe, namely, Eucomys infelix, 

 Euplectrus bicolor, and Tetrastichus hagenomi ; the same appears to apply also 

 to two others. Tetrastichus inunctus (Nees) Thorns., and Leptomustix histrio 

 Mayr, but I am very doubtful as to the exactitude of the specific determination 

 of these latter. 



I may here express my indebtedness and my thanks to all who have helped 

 me in this work, and especially to Messrs. Hugh Scott, of Cambridge University, 

 Waterston, of the Imperial Bureau of Entomology (at the British Jluseum), 

 Silvestri and Grandi, of the School of Agriculture at Portici, and Bouvier and 

 Lesne, of the Museum of Natural History at Paris. I may also express my 

 gratitude to the Editors of Novitates Zoologicae, who have permitted the 

 publication of mj' report in their well-known periodical. 



Mused C:vico di Genova. 

 20<A September, 1916. 



