368 Mr. G. J. Arrow on the 



decumbent scales, and having the last joint of the maxillary- 

 palpus greatly enlarged and channelled along almost its 

 entire length. Congeneric with this is a species doubtfully 

 referred to Trihostethes by Philippi as T. viretis, and said 

 to be allied to " Amhlyterus variabilis " ; but what insect he 

 spoke of by this name I am unable to discover. The common 

 Chilian Aulacojmljjus viridis of Burmeister is an insect of 

 entirely different appearance, which may be distinguished by 

 the name of Hylamorpha. Its chief generic characteristics 

 are tlie dense clothing of scaly hairs upon the abdomen, the 

 undivided claws, and the transverse clypeus. It has been 

 characterized in detail by Burmeister. H. viridis, Burm., is 

 the only species of this genus at present described, for Aulaco- 

 palpiis angustus, Philippi, must be transferred to the genus 

 BrachysternuSj with which it agrees in all essential points, 

 having only a superficial likeness to IT. elegans. 



The following are two new species of Ilylavioiyha : — 



Hylamorpha rufimanoy sp. n. 



H. eleganti affinis, supra prasina, tota punetato-rugosa ; abdomine 

 nigro, albido-setoso, ore, antennis, pectore, pedibus anticis, ali- 

 orum tarsisque rufo-castaneis ; tibiis posticis viridi-aureis ; clypeo 

 subquadrato, brunneo-marginato, margine parum reflexo ; pro- 

 thorace valde transverse, medio profundo sulcato. 



Long. 15 mm. 



Hah. Chili. 



This insect is rather less elongated than H. elegans, Vtwxm.^ 

 the margin of the clypeus is less reflexed, and the anterior 

 legs are without a trace of green. 



Hylamorpha cylindrica, sp. n. 



Olivacea ; capite, prothorace, tibiisque anticis prasinis, prothoracis 

 lateribus aureis, corpore subtus tarsisque castaneis, pectoro fulvo- 

 piloso ; abdomine pills albo-luteis obtecto ; capite magno, clypei 

 margine brunneo, reflexo ; prothorace cum capite punctato-rugoso, 

 lateribus rcgulariter arcuatis baud angulatis, margine postico vix 

 lobato ; elytris rugose punctato-striatis, crebrc piliferis. 



liOng. IS mm. 



Hab. Chili. 



//. cylindrica is rather less flattened above than tlic other 

 two species. The elytra are not truncated behind and are 

 tiomewhat densely clothed with seta. The rounded sides of 

 ihe thorax and the large head are also distinctive. 



