398 Queries and Answers. 



future Numbers, to send you notes on the work of Sowerby, 

 as well as all other books on natural history which I have 

 had the means of procuring in this distant country. So 

 many of my drawings have remained useless in London, for 

 years, from the expense attending coloured engravings, that 

 I am induced to proceed with my illustration of molluscous 

 and other animals without them ; giving only sketches of their 

 characters, as Hooker has done among the mosses. These 

 will be sufficiently perfect to instruct the European student, 

 even when done in lithographic outline ; and will cost but 

 little to the publishers." — [Lansdown Guilding. St. Vincent, 

 May 1. 1830.] 



Mr. Guilding had thus remarked on Wood's Index Testa- 

 ceologicus, noticed in II. 40. : — " The student must not 

 suppose that the Index Testaceologicus of Mr. Wood contains 

 all the shells known at the present day : the cabinets of 

 Sowerby and others are of immense extent, and rich in unde- 

 scribed species." — Id.~] 



Insects*, Works on. — We have asked of Mr. Westwood 

 information for the use of our correspondent. Mr. West- 

 wood has thus replied : — " Your correspondent asks for the 

 name of a work to supply him with the generic and specific 

 descriptions of all kinds of British insects. [So we had repre- 

 sented to Mr. Westwood.] No such work, adapted to the 

 present state of science, or within the last thirty years, exists. 

 Stephens has completed Coleoptera, Lepidoptera, and Or- 

 thoptera ; but it is an expensive and extensive work. Per- 

 haps the best plan would be, to get Stephens's Catalogue, 

 containing all the species and references to every English 

 author, and to purchase the chief works upon species. As for 

 Coleoptera and Lepidoptera, Stephens's work or else Gyllen- 

 hall's Insecta Suecica, and Haworth's Lepidoptera Britannica ; 

 as for Tenthredinidae, Saint Farglau's Monograph ; ichneu- 

 monidae, Gravenhorst's Ichneumonologia ; bees, Kirby's Mo- 

 nographium Apum Anglia ; Diptera, Meigen's work in six 

 volumes. But this plan would, perhaps, be exceptionable, 

 from extent of price. Then, I can only say, get Stephens's 

 Catalogue, and the Systema Natures; and the chief old species 

 of all orders are there described. — J. O. Westwood. The 

 Grove, Hammersmith, June 13. 1835. 



[On this subject, also, we have remarks, by the late Rev. 

 Lansdown Guilding, lying by, which at this time are, we 

 think, worth printing ; at least, if only as part of the writer's 

 biography. He had made them in relation to a mention made 

 in I. 407., by a correspondent, of the insufficiency of Kirby 

 and Spence's Introduction to enable him to classify insects.] 



