96 Mr. C. 0. WaterhousG on the different forms 



British Pi/ropterjis affinis is a species from Borneo, wliicli 

 I here desci'ibe as P. sculpturatiis. 



The following is my account of the genera so far as they 

 are known to me. 



I am not acquainted with the following genera: — Celi- 

 asis, Cast., Clndocerus, Kirsch, Micronycltns, Motsch. 



Dictijo-ptera, Latr., 1829, has been applied to various 

 S|Decies, but it is better to omit it altogether, as the name 

 is preoccupied in Ortltoptera by Leach, 1818. 



Digrapha is synonymous Avith Calopteron. 



Anorliijncus, Guerin, 1838; no species is given, but 

 the first species described under this genus is Anarlnjn- 

 clius scutellaris, Er., and this is a Calocliroinus (1833). 



Coptorliinus, Temnostoma and Odontocerus, given by 

 Guerin (Voy. Coq. p. 72, 1838), have no species assigned 

 to them, and as the names are all preoccupied in other 

 orders it is best to drop them altogether. 



Section I. — Claws dentate. 

 Genus 1. Macrolycus, gen. nov. 



Antennfe compressed, dentate. Rostrum none ; apical 

 joint of maxillary palpi large, triangular. Claws with a 

 sharp tooth at the apex, scarcely visible in the $ . 



Type, M. coccineiis, sp. n. 



Section II. — Clmos simple. 

 Genus 1. Calochromus, Guerin, Ann. Fr. 1833, p. 158.. 



Rostrum none. Thorax with a mesial impressed line, 

 and with a more or less distinct fold or carina, com- 

 mencing near the posterior angle and directed obliquely 

 forwards. Elytra pubescent, with several longitudinal 

 folds, but with no distinct carina. Legs simple. 



Type, C. gluucopterus, Guerin. 



Genus 2. 



Same as Calochromus, but with the intermediate coxre 

 dentate, the intermediate femora thickened and with a 

 tooth beneath, the tibiae of the same pair of legs and the 

 posterior tibiffi curved. 



Type, C. tibialis, Waterh. 



