Geology and Natural History. 181 



recalled that some time since Professor Lacroix published an 

 important memoir upon an interesting series of alkaline rocks 

 from the northwest coast of Madagascar as noticed in this 

 Journal, vol. xiv, page 396, 1902. In the present work a new 

 series of similar rocks from other localities in the same province 

 is described with analyses by Pisani, syenites, f oyaites, tinguaites, 

 monzonites, etc., which thus extend the limits of this petrographic 

 province in a most interesting way. l. v. p. 



10. Notes on the Rocks of Nugsuaks Peninsula and its Envi- 

 rons, Greenland ; by W. C. Phalen. Smith son. Misc. Coll. 

 Quart. Issue, vol. xlv, pp. 183-212, 1904. — A petrographic descrip- 

 tion accompanied by analyses of rocks collected in 1897 by Messrs. 

 Schuchert and White. The rocks are mostly granular crystal- 

 lines, granite, syenite, diorite, etc., and there is a complete descrip- 

 tion of the iron-bearing basalt. The work is carefully done and 

 adds to our knowledge of the petrography of the northern lands. 



l. v. p. 



11. Monograph of the Coccidce of the British Isles ; by Robert 

 Netvstead. Volume I, 1901 ; pp. xii + 220; text figures 20; 39 

 plates. Volume II, 1903; pp. 270; text figures 7; 42 plates. 

 London (printed from the Ray Society). — The second and final 

 volume of Mr. Newstead's careful and very praiseworthy mono- 

 graph of the British scale insects has just been published. The 

 entomological monographs published by the Ray Society have not 

 always been of the first rank, but this one of Mr. Newstead's 

 deserves very great praise. Many of these Ray Society mono- 

 graphs have been devoted to the consideration of the fauna of 

 the British Isles, and from its title this would seem to be of 

 equally limited scope. As a matter of fact, the author has only 

 included species which have actually been found living in Great 

 Britain and Ireland, but with the Coccidae the conditions are such 

 that a far more general interest attaches to this monograph than 

 any of the others which have been geographically so limited. 

 Perhapsthe majority of the Coccidae of the world have, through 

 the constant interchange of plants, become practically cosmo- 

 politan. It is difficult with the majority of species at this late 

 date to decide the probable original home. The result is that by 

 far the larger number of species treated b}' Mr. Newstead have 

 been introduced into Great Britain, and have established them- 

 selves there. To illustrate the interest which American investi- 

 gators will have in this monograph, of the thirty-six species of 

 Diaspinae treated in volume i, thirty occur also in the United 

 States, and, of the remaining six, three have been found only 

 in greenhouses in Great Britain and are probably species intro- 

 duced from some other part of the world. Compared with the 

 world fauna in the Coccidae, however, the number of species 

 treated in the monograph is, of course, small, and hence some of 

 the generalizations made by the author as to generic distinctions 

 and those of higher groups will possibly be open to criticism 

 when larger series are studied. It seems to the writer, for example, 



