1 14 jSIr. C. O. Watcrliouse on the. different forms 



Genus 36. Trichalus acutangulus, sp. ii. 



Flavus ; anteniiis flavo-fuscis ; thorace antice angustato, 

 marginibus reflexis supra granulato-punctatis, angulis pos- 

 ticis valde acutis ; scutello svibquadrato, apice triangu- 

 lariter emarginato ; elytris septem costatis, costa prima 

 basi triflircata, 2^, 4^ et %^ magis elevatis, interstitiis sat 

 evidenter uniseriatim punctatis. 



Long. 4| lin. 



Thorax shining in the middle, with a single mesial 

 lanceolate areolet, the anterior and lateral margins thickly 

 punctured. Scutellum not rounded at the sides, trian- 

 gularly emarginate at the apex. Elytra opaque, each 

 with seven costre, the first dividing into three at the base, 

 the second, fourth and sixth much more elevated than the 

 others, the interstices rather strongly punctured. 



Hab. — Dory, New Guinea (Wallace). Brit. Mus. 



Trichalus cBinulus, sp. n. 



Elongatus, ater ; thorace antice suj)ra granulato ; elytris 

 basi flavo, tricostatis, interstitiis biseriatim foveato-punc- 

 tatis. 



Long. 5 lin. 



Thorax above granidate-punctate in front. Scutellum 

 rather large, broader than long, yellow, a little fuscous in 

 the middle, truncate at the apex. Elytra very long, sub- 

 ]>arallel, the basal third ochraceous ; each elytron with 

 three distinct costffi (besides the three subscutellar cost^, 

 which are distinct), the interstices with two lines of well- 

 defined transverse punctures, the lines of punctures divided 

 by a fine costa. 



Hab.— Avn Is. (Wallace). 



Thorax relatively broader than in the following species 

 (ajiceps), and the punctures of the elytra are much more 

 regular and defined, and the intermediate costte, although 

 fine, are distinct. 



Trichalus anceps, sp. n. 



Elongatus, ater, opacus ; thorace antice angustato, 

 supra antice granulato ; elytris basi flavis, tricostatis. 

 Long. 3 lin. 



Antennas very long and compressed. Thorax small, 

 longer than broad, narrowed in front, above in front 

 distinctly granular. Scutellum fuscous, concave, sub- 



