OF NEW ZEALAND. 299 



Corymbites. 



Sharp ; Ann. Mag. Nat. Hist., May, 1877. 



NOTE. The insects under this generic name belong apparently to 

 two distinct groups, the structural characters of which are given separ- 

 ately, but under the one generic name. 



The form of the head is in the four following species that described 

 under the name Chrosis, but these four species (C. antipodum, dubius, 

 strangulates and my ops) differ from those belonging to Chrosis by the 

 form of the prosternal process and mesosternal cavity. The former is 

 but little (C. antipodum and C. dubius) or not at all (C. strangulates 

 and C. myops) bent upwards ; and the saltatorial mucro is much pro- 

 longed. The borders of the mesosternal cavity are not elevated ; the 

 cavity does not extend to the intercoxal suture ; its hind portion is 

 rounded, and the portion of the mesosternum between the opening and 

 the intercoxal suture is somewhat but only slightly depressed. Most of 

 the other characters resemble those belonging to Chrosis. 



The second group (C. olivascens and C. agriotoides) cannot be very 

 well arranged with Chrosis, because the hinder parts of the sides of the 

 mesosternal cavity are less elevated and horizontal, while from the first 

 four species included under the present genus, these two differ by the 

 cavity being less depressed in its posterior part, and approaching closely 

 to the suture ; and these two species moreover differ in the fact that the 

 hind coxal lamina is of nearly one length throughout, the trochanteral 

 portion being not at all elongate. 



532. C. antipodum, Candeze. Sharp ; Ann. Nat. Hist., May, 

 1877. C. elongatus, angustus, fuscus, antennis pedibusque testaceis, 

 densius breviter griseo-pubescens ; antennis filiformibus, elongatis, arti- 

 culo secundo sat elongate, sed quam tertius fere duplo breviore ; pro- 

 thorace elongato, lateribus parallelis, fere dense punctato ; elytris angus- 

 tis, apicibus attenuatis, plus minusve emarginatis et spinosis, subtiliter 

 striatis, interstitiis subtiliter fere dense punctatis ; pedibus elongatis, 

 tarsis longissimis. 



Long., 11-15 mm - 



Christchurch ; several specimens communicated by Mr. Wakefieid. 



NOTE. Of the fourteen species belonging, seemingly, almost ex- 

 clusively to the South Island, this is the only one of which an example 

 has been sent me. 



533. C. dubius, Sharp ; Ann. Mag. Nat. Hist., May, 1877. C. 

 elongatus, sat angustus, nigricans, antennis fusco-testaceis, pedibus tes- 

 taceis, breviter minus dense griseo-pubescens ; antennis tenuibus, fili- 

 formibus, sat elongatis ; prothorace elongato, crassiusculo, lateribus sub- 

 parallelis, crebre punctato; elytris leviter striatis, apicibus sat attenuatis, 

 fere integris ; pedibus gracilibus, tarsis sat elongatis. 



Long., 16-17 mm - 



Christchurch ; found by Mr. Wakefieid. 



OBS. In Mr. Janson's collection there is an insect allied to this 



