OF WASHINGTON, VOLUME XI, 1909. M 



7. Ferris (Ann. Soc. Ent. France, p. 541) gives a good descrip- 

 tion of the larva of Mclasis fluhcllicornis. He mentions the outward 

 curve of the mandibles and gives a short sketch of its life history. 

 He states that the eggs arc laid in April, and that the young imagos 

 can be found in their pupal cells throughout the winter and emerge 

 with the first warm weather. He also mentions the broad, flat nature 

 of the galleries. 



1856. Coquerel (Ann. Soc. Ent. France, p. 511) gives a descrip- 

 tion of the larva of Funiu.v nuidagascaricnsis. He states that the two 

 last larger teeth situated on opposite sides of the head are the man- 

 dibles, and suggested that the larva? of this genus destroy other wood- 

 boring larvae by piercing their bodies and sucking their juices. 



1862. Baron C. R. Osten Sackcn (Proc. Ent. Soc. Phila., v. 1, p.112) 

 describes the larva of Fomax badins and suggests that it possesses 

 predatory habits. His description and drawing differ in some slight 

 details from specimens identified as this species in our collection; his 

 specimen, however, does not appear to have been fully developed, which 

 would account for this in a measure. 



1870. J. C. Schioedte (Nat. Tidsskr., in, 6, p. 490) gives a descrip- 

 tion, accompanied by some admirable drawings, of the larva of Melasis 

 buprestoides, showing its mouthparts. He states that this species lives 

 in the burrows of other wood-boring insects. 



/.V/o. E. Ferris (in Bonvouloir, Monogr. Eucnem.) gives careful 

 descriptions, accompanied by figures, of the following species : Farsus 

 itnicolor. Mchisis buprestoides, Eucnemis capucina, and Xylobins liuin- 

 eralls. 



EXPLANATION OF PLATE IV. 

 Tliarops nificornis Say. 



1. Larva, dorsal view. 



2. Head of larva, dorsal view. 



3. Head of larva, ventral view. 



Dr. Hopkins, in discussing the paper, stated that in a number 

 of respects it was quite remarkable. It relates to a group of 

 beetles to which considerable attention has been attracted by 

 some of the leading coleopterists of Europe and this country; 

 yet very little was known about the different stages and habits 

 of the species. Therefore the amount of original information 

 on tlicsc insects secured by Mr. Van Horn, conveyed in this 



