32 



3. Procephalus, Laporte. 



This genus was first published by Dr. Fischer, 

 under the name of Caris, a name which has been 

 applied to some of the Arachnida. Mons. Laporte 

 consequently adopted the term Procephalus. Pro- 

 fessor Audouin who has studied these insects mi- 

 nutely, records an opinion in his L'Histoire Natural 

 des Insectes (Vol. 1, page 107) that Procephalus 

 of Laporte differs from Ctenostoma of Klug, and 

 is identical with Caris of Dr. Fischer. For a de- 

 scription of the known species consult L' Entomo- 

 graphie de la Russie, pi. 4, fig. 4., and Silbermann's 

 Revue, t. 2, p. SQ. 



4. Ctenostoma, Klug. 



The insects of this genus as well as the former, 

 seem peculiar to the warm regions of the new world ; 

 only three recorded species are known. For an 

 account of them consult the Nova Acta Acad. 

 Natur. Curiosorum, Tab. 10. Also Observations 

 in the Zoological Journal, by Mr. J. O. Westwood, 

 vide Vol. 5, page 53, pi. 41. Supp. 



