Hydrophilidce of New Zealand. 479 



*u^^^ ^^ apparently one of the commonest beetles in 

 the Crreymouth district, as I have received it several 

 times, and in numerous examples. A variety occurs 

 rarely havmg the apex of the elytra dark. 



Adolopus altulus. 



Cylovia altulum, Broun, Man. N. Z. Col., p. 86. 



This is extremely similar to A. helmsi, but is a trifle 

 smaller, has the serial punctures of the elytra behind 

 much coarser, the series near the suture very much 

 shorter, and the margins explanate behind ; the punctu- 

 ation of the thorax is also finer and more scanty. 



Auckland (Laivson). 



I have also received several examples of this insect 

 from Captain Broun, so that it is no doubt one of the 

 species designated in his ' Manual,' and I think the only 

 one it can be is Cyloma altulum. 



Cyclonotum marginale. 



Cyclonotum marginale, Sharp, Ent. Mo. Mag 1876 

 p. 21 ; Broun, Man. N. Z. Col., p. 83. 



This is one of a group of Austrahan and South 

 American species which, on account of the reduction in 

 length of the basal joint of the hind foot— which is but 

 little longer than the following joint -and of the convex 

 orbicular form, will require to be separated from Cyclo- 

 notum proper, and from Dactylosternum ; but to do this 

 at present without indicating all the described species 

 that pertain to it would be premature. 



C. marginale is an Australian insect, and has appa- 

 rently been found in New Zealand only about Auckland. 



Cercyon Jiavipes. 

 Sph(Bridiumflavipes, Fab., Ent. Syst., i., p. 81. 

 _ This well-known European insect has no doubt been 

 introduced into New Zealand in company with cattle or 

 sheep, m whose dung it occurs. It is probably common 

 m the islands at present, as I have seen several examples 

 from Auckland and Greymouth. 



