394 COLEOPTERA 



lowed at the base, with their shoulders sometimes dentiform ; their 

 epipleural folds narrow and entire. Legs rather long, femora sublinear, 

 rarely attenuated at their base, tibia slender and rounded \ first joint of 

 the posterior tarsi very elongate, the last of all long. Mesosternum 

 sometimes sloping and concave in front, sometimes horizontal with its 

 anterior margin hollowed; prosternal process moderately wide, or narrow, 

 triangular and acute. Body oval, elliptically oval, or globose-oval, and 

 smooth. 



697. A. zelandiCUS, Bates; Ann. Mag. Nat. Hist., ser. 4, 

 vol. xiii. Form and general aspect of A. hydrophiloides, Fairm. ; but 

 differs from it and from all the other species of the genus known to me, 

 in having the four hind tibia attenuate at the base and then expanded, 

 and strongly sinuous (almost broadly dentate in the hind pair) at the 

 inner margin. 



Prothorax green, with a slight bluish tinge, brassy at the sides ; 

 elytra green, with a brassy tinge, the sutural region a little coppery ; 

 head and prothorax finely and, except on the epistoma, not very closely 

 punctured ; elytra punctate-striate, the striae distinctly deeper and the 

 punctures a little larger than in A. hydrophiloides ; intervals finely and 

 not closely punctulate ; under-side and legs piceous ; tarsi and basal 

 joints of antennae paler ; lower margin of the four posterior femora 

 emarginate ; anterior tarsi strongly expanded, the intermediate 

 thickened ; antennae elongate. 



Length, 3^ lines. 



New Zealand. One example. 



The peculiarities observable in the tibise and tarsi of this species are 

 either sexual or subgeneric. 



FAMILY CISTELIDES. 



Mentum obtrapezeiform, free. Ligula prominent, its feelers but little 

 distinct. Maxilla uncovered, their lobes lamelliform and ciliated. 

 Mandibles with an internal projection at the base. Eyes lateral, nearly 

 always emarginate, sometimes very large, more or less convergent above. 

 Antenna eleven-jointed, inserted immediately in front of the eyes. Front 

 coxa globose or slightly transversal, sometimes cylindrical and prominent, 

 in the last case contiguous ; their cotyloid cavities narrowly open behind ; 

 the intermediate always provided with trochantina ; the posterior strongly 

 transverse : tarsi heteromerous, the two front pairs with five, the pos- 

 terior with four joints ; claws pectinate. Abdomen composed of five or 

 six distinct segments, the penultimate of variable length. 



Group CISTELID-ffi. 



Metasternum of normal length. The pronotum distinct from the 

 flanks of the prothorax. Scutellum moderate. Elytra free. Body 

 winged. 



