98 Mr. C. O. Waterhouse on the different forms 



Thorax with a complete mesial carina. Elytra with fom' 

 costre, the interstices with transverse nervures. 



Hah. — New Hebrides. 



Type, C. notatus, sp. n. 



Genus 8. Calopteron ? 



Rostrum none. Apical joint of palpi very large, long, 

 knife-shaped. Antennae very compressed, simple. Thorax 

 with an interrupted mesial carina. Elytra very ample, 

 quadricostate, the interstices with transverse nervures. 



Type, C. Pfeifferi, sp. n. 



Genus 9. 



Rostrum very short. Eyes prominent. Antennae long, 

 slender, very compressed, the basal joint large, pear- 

 shaped. Thorax with a mesial carina in front, continued 

 posteriorly by a mesial channel. Each elytron with 

 three strong costal, the third forming a ridge over the 

 shoulder. Legs very long and slender, the femora 

 scarcely compressed. 



Type, Lycus blcolor, Linn. 



Genus 10. Calopteron, Guerin, Voy. Coq. 1836, p. 72. 



Thorax with complete mesial carina. Antennas long, 

 compressed, generally broadest just before the apex, not 

 pectinate. Apical joint of maxillary palpi large, trans- 

 versely trapeziform. Elytra with four costte, the interstices 

 with numerous transverse nervures. 



Hab. — America. 



Type, C. apicalis, Guerin. 



See note after Genus 14. 



Genus 11. CiENiA, Newman, Ent. Mag. v. 1838, p. 381. 



Thorax with complete mesial carina. Antennre pecti- 

 nate. Apical joint of maxillary palpi moderately large, 

 acuminate at its apex. Elytra Avith nine carinas, the 

 interstices with numerous transverse nervures. 



Hah. — America. 



Type, C. scapularis, Newman. 



Genus 12. Celetes, Newman, Ent. Mag. v. 1838, p. 381. 

 Thorax with complete mesial carina. Antennre pecti- 

 nate, the branches springing from the base of each joint. 



