the utility of wliioli has boon ahvady ovinocil by tlio republioatioii of 

 it in this country in two or thrco ditierent works. 



The announecnient likewise, and eonnnencenient of the publication, 

 of a series of works in Paris, in which each order of insects has been 

 undertaken by an author tlistinguished in his particular branch of 

 the science, forms a gratifying era in our science '. 



It has been well said that the field of zoology is so extensive that 

 no one can with effect undertake the cultivation of more than a de- 

 tached portion. And this remark is not less forcibly applicable to 

 entomology alone. Hence, in proof of the justice of this observation, 

 numeroiis memoirs and monographs devoted to isolated groups of 

 insects have recently been published, which I now proceed to notice 

 as concisely as possible, premising that it is not improbable that, not- 

 withstanding all my exertions, many of these may not have come to 

 my knowledge, and that in an address like the present, only the more 

 matenal can be noticed, and that in a very cursory manner, and with- 

 out reference to the theories or doctrines w liicli they may in some in- 

 stances elucidate. I need not say how nuich I shall feel obliged to 

 any gentleman who will have the kindness to supply any of the de- 

 ficiencies which nuist necessarily occur in my address. Perhaps it 

 will be more convenient to arrange these notices according to the 

 classification of the great groups of annulose animals, rather than to 

 bring under review, in the first place, the proceedings of our own 

 Society, and then to pass to the notice of English and foreign me- 

 moirs. 



To commence therefore with the Crustacea. 



This class of annulose animals, it is true, has not engaged so much 

 of the attention of modern entomologists as some of the other groups 

 of insects, but still its investigation has not been stationary amongst 

 us. The laborious researches of Messrs. Edwards and Audouin re- 

 lative to the internal anatomy of some of the larger species - are 

 amongst the most valuable works of the kind hitherto pulilished. Nor 

 must the dissections of the Lobster by our own celebrated compa- 

 rative anatomist Mr. Owen, recently published \ be passed over in 

 silence. M. De Haan of Leyden has undertaken the description of 

 the Cntstacea of Japan \ and the introductory portion of his work 



1 Suites k Buffon, formant, avec les CEiivres de cet Auteur, un Cours coniplet 

 d'Histoire Naturellc, Collection acconipagnee de Planches. 8vo. Paris, Roret. The 

 following; are the names of the entomological authors, and their respective portions 

 of the work: Serville (Orthoptera, Neuroptera, Hemiptera), Boisduval (Lepido- 

 ptera), De Jean (Coleoptera), Lacordaire (Introduction), Macquart (Diptera). 

 Milne Edwards (Crustacea), Saint Fargeaii (Hymenoptera), Walckenaer (Arach- 

 nida and other apterous insects). Each portion is complete in itself, and is no ways 

 connected with any of the works of BuflPon. 



- Memoircs pour servir k I'Histoire Naturelle des Crustaces. Par MM. Audouin 

 et Milne Edwards. Paris, 1829. 8vo. Being a collection of memoirs previously 

 published in the Annales des Sciences Natiirelles. 



' In the Descriptive Catalogue of the Museum of the College of Surgeons. Lon- 

 don, 1834. 



* Faima Japonica, sive Descriptio Animalium quae in Itinere per Japoniani col- 

 legit Ph. Fr. de Sicbold. Auct- VV. De Haan pro Invertebratis. Lugdimi Batu • 

 vorum, 1833. Folio. With plates. 



