XVI PKEFACL 



Before concluding this Preface, I take the oppor- 

 tunity of publicly thanking Dr. Horsiield for his 

 liberal views and kindness in forwarding this Ma- 

 nual. Whilst engaged in grouping the Families of 

 the ground beetles I was repeatedly at a loss where 

 to place several of Mr. MacLeay's genera, published 

 in the Annulosa Javanica ; by Dr. HorsfiehVs ready 

 attention to my wishes, I was enabled to examine 

 the rich collection in the India House, and had his 

 permission to figure those forms which, though pub- 

 lished, are little known to the Entomologists of the 

 Continent. Instead, however, of giving the generic 

 details here, I beg to refer the reader to the above 

 excellent work. The drawings were made by Mr. 

 Westwood, and are accurately engraved by Mr. 

 Swaine. I therefore trust that the plates will not 

 be the least interesting part of the present num- 

 ber, as they will tend to clear up manv difficulties, 

 and give an increased value to the publication. 



F. W. H. 



Since mv manuscripts were in the printer s hands. Monsieur Aube 

 has published a volume on Aquatic Coleoptera. Reference should 

 be made to that work, which is evidentlv a great improvement on 

 that oi the Baron De Jea 3 Species St bad des Coleoptcv . - 



