28 



tulatis (trans elytron jDuncturis circiter 20), manifeste 

 striatis, interstitiis pariim convexis ; pygidio sparsius 

 minus fortiter punctulato ; coxis joedibusque nt B. . Grif- 

 fithi, Blackb. Long., a-5f 1. ; lat., 24-3 1. 

 This species is closely allied to //. (xiiffitlii, Blackb., dif- 

 fering by its pronotum less finely punctulate, with hind 

 angles (viewed from above) blunter, and especially by the 

 structure of its labrum. In Griffithi (and most other IJ.eter- 

 oiii/ces of the first four groups) that organ is longitudinally 

 concave, so that if it be looked at from in front its fi'ont 

 face is seen as an arch having its convex outline 

 curved upward towards the clypeus, while in the present spe- 

 cies the labrum is quite flat, so that when looked at from 

 in front its outline appears perfectly straight transversely. 

 As I have examined four specimens of H. suavis (evidently 

 — from their ticketing — taken in company) I am able to say 

 that this is a reliable character. 



North Queensland; Gulf of Carpentaria (Mr. Koebele). 

 H. tropicus, sp. nov. Minus elongatus, postice parum dila- 

 tatus ; sat nitidus ; piceo-ferrugineus, antennis dilutiori- 

 bus ; supra fere glaber, capillis nonnullis erectis exceptis ; 

 clypeo confertim sat fortiter ruguloso, antice late leviter 

 sinuato ; labro summo clypei planum haiid attingenti ; 

 fronte crebrius grosse punctulata ; fronte clypeoque ut 

 plana sat disparia visis (ilia sat convexa) ; antennis 9- 

 articulatis ; prothorace quam longiori ut 15 ad 8 latiori, 

 antice sat fortiter angustato, longitudinaliter subtiliter 

 subcanaliculato, supra sparsim acervatim puncturis 

 insequalibus (sat grossis et magis subtilibus) impresso 

 (puncturis circiter 10 in segment! longitudine), lateribus 

 minus arcuatis, angulis anticis acutis sat productis posticis 

 (superne visis) rectis, basi modice bisinuata, margine 

 basali ad latera perspicue magis elevato ; elytris fortiter 

 minus crebre punctulatis (trans elytron puncturis circiter 

 20) ; pygidio sparsius sat fortiter punctulato, exempli 

 typici basin versus carinato apicem versus longitudinali- 

 ter concavo ; coxis posticis quam metasternum sat bre- 

 vioribus quam segmentum ventrale 2"'" sat longioribus ; 

 femoribus posticis dilatatis, biseriatim punctulatis, seriei 

 posticge puncturis circiter 15, inter series area Isevi ; 

 tibiis anticis extus tridentatis ; tarsorum posticorum (his 

 sat brevibus) articulo basali 2'^ sat asquali, quam S^s 

 multo longiori; unguiculis bvfidis. Long., 7 1.; lat., 



The hind series of punctures on the hind femora of this 

 and a number of following species not onlj? consists of many 

 more punctures than in the preceding species, but also dif- 



