PLATEROS. 25 



Lyponia debilis. 

 (Plate VI. fig. 9.) 

 Waterh., Trans. Etxt. Soc, 1878, p. 107. 



Rubro-fusca ; thorace limbo elytrisque rufis, antennis fere nigris, 

 scutello piceo ; elytris quadricostatis, interstitiis biseriatim fortiter 

 pimctatis, punctis transversis, seriebus costa tenui divisis. 



Long. 4| lin. 



Hah. China (J. C. Boivring, Esq.). 



Thorax rather flat on the disk, with a mesial fine impressed line 

 (not extending to the anterior nor posterior margins), the sides 

 gently reflexed. Elytra with the fourth, sixth, and eighth costae 

 extending to the apex, by which means the first, second, and third 

 are somewhat abbreviated ; the fifth and seventh costae join the 

 sixth some distance from the apex, the ninth is only visible at the 

 shoulder when viewed laterally ; the interstices have each a single 

 line of strong, transverse punctures. The texture of the elytra is 

 delicate, and is semitransparent where the punctures are. The third 

 joint of the antennae has only a short branch, but the branches to 

 the following joints gradually increase in length, are slender and 

 lameUifbrm. 



PLATEROS. 



Bourgeois, Comptes-rendus d. I. Soc. Ent. Belg., 1879. 

 Lycus, genus 18, Waterh., Trans. Ent. Soc, 1878, p. 100, 



Rostrum none. Antennae slender and simple in both sexes. Tho- 

 rax even above, with only a slight longitudinal mesial impression 

 behind. Elytra with nine costae, the interstices with a single line 

 of punctures. 



In my original manuscript the genus Plateros was intended only 

 to include Eros lictor, Newm., and other American species ; a more 

 detailed examination of the species, however, has induced me to 

 include in it the Asiatic forms separated originally under the head 

 of "Genus 16" (Tr. Ent. Soc, 1878, p. 99), of which gracilis was 

 the type. 



American Species. 



Plateros lictor. 



(Plate YIII. fig. 5.) 



Eros lictor, Newm., Entom. Mag., 1838, v. p. 382. 



Niger ; thoracis lateribus flavis, elytris novemcostatis ; interstitiis 

 uniseriatim punctatis. S • Long. 3^ lin. 



Hah. North America. 



Antennae not less than half the length of the entire insect, the 

 third joint at its apex nearly as broad as its length, the fourth joint 

 the same width at the apex but a trifle longer, the following joints 



