[ 45 ] 



VI. Synopsis of the Coleopterous Family Paussidae ; with Descriptions of a new 

 Genus and some new Species. By J. O. Westwood, Esq., F.L.S., 8fc. 



Read June 1st and 15th, 1841. 



xLLEVEN years ago I had the pleasure of submitting to this Society a mo- 

 nograph of the remarkable family of beetles named Paussidte, which was 

 honoured by publication in the 16th volume of the Society's Transactions. 

 Since that period numerous additions have been made to the list of species, 

 and even of genera, and our acquaintance with the structure of some of the pre- 

 viously described species has been rendered more perfect. I avail myself, there- 

 fore, of the opportunity offered by the occasion of presenting to the Society the 

 description of several additional new species, to add an entire synopsis of the 

 species now known, feeling convinced that the extreme rarity of the insects, 

 of many of which we are still acquainted with only single specimens, will 

 render this supplement to my former memoir acceptable. 



Of the genera regarded in my monograph as belonging to this family, one, 

 Trochoideus, must be removed, as an examination of its cibarian organs has 

 proved that it belongs to the Endomychidce. I am now acquainted with four, 

 if not five species of this genus. 



Sp. 1. Tr. cruciatus, Dalm. [Linn. Trans, xvi. p. 675.] 

 In Gum Copal. 



Sp. 2. Tr. Dalmanni, Westw. in Trans. Ent. Soc, ii. p. 96. pi. 10. f. 8. 



Madagascar. 



Sp. 3. Tr. Desjardinii, Guer., Rev. Zool., No. 2. p. 22. Westw. in Trans. Ent. 



Soc. ii. p. 97. 

 Island of Mauritius. , 



Sp. 4. Tr. Americanus, Buquet in Gu6r. Rev. Zool., June 1840, p. 174. 



Bogota, Columbia. 



Sp. 5.? Tr. Hopei, Westw. ined. Possibly identical with T. Americanus. 

 New Granada. In Mr. Hope's Collection. 



