REVIEWS 517 



arthropods capable of acting as definitive or intermediate hosts of human parasites 

 are discussed, as far as possible, in connection with the types of organisms 

 transmitted. Accordingly we have our attention directed, inter alia, to insects 

 and tapeworms, mosquitoes in their relations to filariasis, malaria and yellow fever, 

 tsetse-flies and trypanosome diseases, ticks as carriers of Rocky Mountain spotted 

 fever, ticks and lice as disseminators of the various spirochete fevers, and lice as 

 transmitters of typhus fever. Certain parasitic diseases of domestic animals and 

 their carriers are also treated in this section, which is concluded by a chapter on 

 "some possible but imperfectly established cases of arthropod transmission of 

 disease," such as Stomoxys and infantile paralysis, Simulium and pellagra. Com- 

 paratively little information is given, in the body of the book, regarding the 

 structural and diagnostic characters of the several groups and forms treated. 

 These are, in the main, reserved for the previously mentioned synoptic tables, 

 which, it is hoped, will also enable the reader to obtain a perspective of the 

 relationships of the arthropods in general. This object will probably be attained, 

 but whether the arrangement adopted will prove of real value in enabling the non- 

 entomological student to identify his specimens seems doubtful. To use such 

 tables with success, a certain knowledge of the external anatomy and of the 

 terminology employed is indispensable ; but the only sources of such information 

 supplied are a series of figures depicting the more important taxonomic details of 

 the main groups. A short appendix, which includes an extract from a paper 

 published only a week or two before the appearance of the volume, and a 

 bibliography extending to fourteen pages, conclude the work. 



In view of the declared object of this handbook little criticism is necessary, but 

 attention may perhaps be directed to a few points. In the table on page 303 only 

 nine specific names of tsetse-flies are given, and of these one (G. bocagei) has long 

 been recognised as invalid. Probably it is not essential that all the known species 

 should be included, but a more judicious selection might have been made, as at 

 least one important and easily determined species (G. brevipalpis) is entirely 

 omitted. Again, on page 264 the rare tick Rhipicentor bicornis not only receives 

 undue prominence, but is stated to occur in the United States — so far it has only 

 been recorded from Africa. Misprints other than those mentioned in the errata 

 list are comparatively few, but a distinctly important one, in view of the definitions 

 preceding, occurs on page 175. It is stated that "a number of tapeworms are 

 known to undergo their sexual stage . . ." — sexual should, of course, read asexual. 



This volume should prove of decided value to students in the manner suggested 

 by the authors, and as a summary of the more important advances made during 

 recent years in the subject should be welcomed by those other classes of readers 

 to whom it is intended to appeal. 



H. F. C. 



Report on Fishery Investigations in Bengal, Bihar, and Orissa, with recom- 

 mendations for future work. By T. Southwell, A.R.C.Sc, Deputy 

 Director of Fisheries, Bengal, Bihar and Orissa. Department of Fisheries, 

 Bengal, Bihar, and Orissa, Bulletin No. 5. [Pp. iii + 87.] (Calcutta : 

 The Bengal Secretariat Book Depot, 191 5. Price 6d.) 



It is doubtful whether the Indian fisheries are capable of improvement by the 

 sudden introduction of European methods of fishing and fish culture. Although 

 the Indian fisherman is generally more than semi-nude, one must not jump to the 

 conclusion that he is a savage. To persons conversant with modern methods of 

 steam fishing as practised in European waters his apparatus may appear primitive, 



