Vol. xxix] ENTOMOLOGICAL XKWS. 399 



same color pattern, the same cloth, in very different morphological 

 types, often belonging to different genera." 



Under "Peculiarities of the Ethiopian Wasp Fauna" we find a most 

 interesting discussion, to illustrate which the author uses Engler's im- 

 portant map of the botanical regions of Africa. This section of the 

 paper has a value to any zoologist studying the Ethiopian representa- 

 tives of any group. Here we also find included a distributional table 

 of the numbers of genera and species of Vespidae found in the major 

 faunal divisions of the world, which emphasizes the relative poverty of 

 the Ethiopian region in diplopterous wasps, when compared with the 

 Neotropical and Australian and Oriental regions. 



In the descriptive account of the species the method of treatment is 

 well worthy of imitation elsewhere. After remarks on each genus in 

 the Ethiopian region we have a summary of the known ethology of 

 the genus, followed by a key to the Congo species and frequently maps 

 showing the Ethiopian distribution of the genus discussed. The de- 

 scriptions of species, new and re-described previously known forms, 

 are particularly full, accompanied by well selected outline illustrations 

 of the diagnostic features. In certain cases genera are fully re-de- 

 scribed. 



Under certain genera, as Euincncs, summaries of the general types 

 of coloration found in the genus are presented, while the ethological 

 information is often very comprehensive. The treatment of the wide- 

 ly distributed ftnmcncs inaxillosus is particularly exhaustive, and here 

 we find tabulations of the parallelism of similarly colored forms in 

 morphologically distinct genera on which phase of the subject are 

 further data under the genera Odyncnis. Rhynchalastor and Synagris. 

 The information concerning the acarid chambers of the species of the 

 genus Nortonia is detailed and well illustrated. 



Under the genus Synagris is discussed the curious feature of loss of 

 terminal palpal joints, which is of value in securing a proper concep- 

 tion of the importance of these features in the taxonomy of the genus. 



The "Bibliographic and Synonymic Catalogue of the Ethiopian Ves- 

 pidae" covers pages 266 to 350. In character it is clear and well ar- 

 ranged, and also conforms with the best practice of the times in giv- 

 ing both summaries of the distribution and the type localities of the 

 species. A particularly full index closes the paper. 



As a whole the paper is an excellent one, which any entomologist, or 

 in fact any systematic biologist, would do well to examine, if for no 

 other reason than to profit by the method of presentation of the con- 

 tents. The author, the American Museum of Natural History and the 

 Congo Expedition members equally can feel pride in the publication of 

 Dr. Bequaert's study. May all the Congo reports be as commendable 

 as this one. J. A. G. RKJIN. 



