Colydiidie of Xtic Zealand. 26 



This species is variable in size ; and the small individuals 

 arc often not so dark in colour as the lar«^er ones. These smaller 

 individuals thcretbrc at first sight much resemble the follow- 

 ing species, from vvhich they can always be distinguished by 

 the different impression on the thorax, and the more widely 

 separated punctures of the stria) of the elytra. 



Pycnomenis simulans^ n. sp. 



P. piceo-nigor, parallelus ; prothorace dorso longitudinaliter haud 

 profimde biimpresso ; olytris sulcatis, sulcis punctatis, punctis 

 approxiinatis. Long. corp. 3^ m. m. 



This species is extremely similar to the preceding one ; but 

 the thorax has two not very distinct elongate impressions on 

 the middle, the narrow space between which is without punc- 

 tures ; the grooves on the elytra are not so deep, and the punc- 

 tures at the bottom of these are less widely separated from one 

 another ; the sculpture of the under surface is less coarse. 



Also sent by Captain Broun from Tairua. 



Pycnomerus minor, n. sp. 



P. parallelus, ferrugineus, subnitidus ; prothorace fere aequali ; elytris 

 punctato-striatis ; antennis minus distincte 11 -articulatis. Long. 

 Corp. 2| m. m. 



Very similar in size, form, and colour to a Rhizophagus. 

 Very closely allied to P. nimulans, but smaller and paler in 

 colour. The head is rather short ; the fold near the eye very 

 obsolete ; the suture between the tenth and eleventh joints of 

 the antenna) is indistinct. The thorax is longer than broad, 

 slightly narrowed behind, with extremely indistinct traces of 

 two impressions on the middle. The elytra are striated, and 

 the stria? are coarsely punctured. The under surface is quite 

 shining and moderately coarsely punctured. 



Also sent by Captain Broun. 



Ohs. Pascoe and Leconte have proposed to distinguish the 

 Pycnomeri with distinctly 11-jointed antennas by the name of 

 Penthdispa. Erichson, who pointed out this character, con- 

 sidered it unnecessary to make distinct generic names for the 

 two forms ; and tiie present species indicates the correctness 

 of his judgment; for the antennte are just intermediate in struc- 

 ture between the two forms. 



Bi'toma vt'cina, n. sp. 

 B. fusca, capitc thoraccque brunneo-testaceis, elytris testaceis, an- 



