58 Mr. F. P. Pascoe on new Genera and 



form a neck, would seem to indicate a different type. 

 Ixalma, another anomalous genus, with somewhat similar 

 legs, but having a free pygidium, I refer to the neighbourhood 

 of Tachygonus. M. lioelofs (Ann. Soc. Ent. Belg. xvii. 

 p. 126) places his genus Celia'^, apparently identical with 

 Ix2lma, among the " Eugnomides," «'. e. with the Erirhininse. 

 These are all isolated forms ; but I think the j^ygidium offers 

 a more important character than the separation or the conti- 

 guity of the anterior coxse. The species described below 

 differs considerably in coloration, some individuals being of an 

 almost uniform dark brown, others pale brown on the disk of 

 the elytra ; some have the elytron prettily variegated — a cen- 

 tral dark triangular spot with a light semicircular line behind, 

 and other variations. 



Pactola variahiUs. 



P. oblonga, fusco- vel bruimeo-squamosa, aliqiiando variogata ; an- 

 tennis fulvis, apicem versus infuscatis ; prothorace subcylindrico, 

 in medio bituberculato ; elytris basi protliorace fere triplo latio- 

 ribus, supra tuberculatis, antice subdepressis, late striato-punc- 

 tatis ; corpore infra sparse punctato. Lowg. 1|- lin. 



Hah. Auckland. 



Idotasia egena. 



I. elliptica, nitide nigra ; rostro pone basin fortiter arcuato, dimidio 

 basali antice punctis magnis obloiigis approximatis impresso ; 

 oculis grosse granulatis ; antennis fulvo-ferrugiueis ; clava ob- 

 longo-ovata ; prothorace sat vage punctato ; elytris vage leviter 

 punctiilatis ; pedibus piceis. Long. 1| lin. 



Hah. Waikato. 



This species is more nearly allied to the Batchian /. scaphi- 

 oides than to either of the Australian members of the genus ; 

 it is, however, broader and less convex, the posterior portion 

 of the elytra less attenuated, the intervals of the punctures on 

 the rostrum less decidedly elevated or cariniform, &c. Idotasia 

 now contains nine species — five from New Guinea and the 

 neighbouring islands, two from Queensland, one from New 

 Caledonia, and the above. They are very homogeneous, ex- 

 cept the one from New Caledonia, but are differentiated by 

 well-marked characters. 



Arceocenis pardalis. 



A. dense pubescens, fuscus, albido maculatus ; antennis breviusculis, 

 nitide fulvis, articulis tertio ad quartum paulo elongatis ; clava 



* Celia has loii'^ been used for a seuus of Carabidse. 



