/2 NORTHERN ZOOLOGY. 



DESCRIPTION. 



Body oval, black, above slightly bronzed, not glossy, covered above and below like the preceding 

 species, as it were, with a web of net-work ; but the reticulations are more minute. Upper-lip, 

 palpi, and antennas ferruginous ; a pair of oval, minute, obscure, red spots mark the vertex : protho- 

 rax with the anterior transverse series of punctures double in the middle, the posterior one not easily 

 discernible, discontinuous in the middle : there appear no rows of punctures on the elytra, but a fesv 

 scattered ones may be discovered : the four anterior legs are piceous. 



This species approaches C. chalconatus, but it is longer, less glossy, the reticulations of the 

 surface are more distinct, no rows of punctures are discoverable, as in that, on the elytra, which as 

 well as the prothorax are all of one colour ; and the posterior legs are black. It seems still nearer 

 C. ater, but it is much smaller, less convex, and has no fenestrated spot on the elytra. 



(106) 7. Colymbetes assimilis. Similar Colymbetes. 



C. (assimilisj obcvatus, dcpressus, lavis, niyer ; ■ proihorace flavcscenti, immaculato ; elytris flavescentibus, nigro creberrime 



irroratis ; pedibus flavis ; brachiis brevissimis piceis. 

 Similar Colymbetes, obovate, depressed, smootb ; prothorax dirty-yellow without spots; elytra dirty-yellow, sprinkled with 



innumerable black dots ; legs yellow : arms very short, piceous. 



Length of the body 5| lines. 



Taken in Nova Scotia by Dr. Mac Culloch. 



DESCRIPTION. 



Body rather depressed, between oblong and obovate, smooth, rather glossy, black, covered above 

 with an infinity of very minute reticulations. Head dirty-yellow ; vertex black, with a pair of con- 

 fluent transverse reddish spots : prothorax dirty-yellow, rather dusky in the disk, transverse, punc- 

 tures nearly obliterated : elytra of the same colour as the prothorax, but sprinkled with innumerable 

 black dots, which however do not extend to the base and sides ; a row of more distant and larger 

 dots adjoins the suture : the fore-breast, the base and apex of the other ventral segments of the 

 abdomen, are dirty-yellow ; the legs are of the same colour, but the arms are shorter than usual and 

 piceous ; the dilated posterior coxae are sculptured with branching rugosities. 



This species represents C. notatus, which it is very like, but the elytra are wider towards the 

 apex which gives the insect an obovate shape ; the black dots of the elytra are more numerous, and 

 minute ; the prothorax is without spots : and the arms or fore-legs are shorter and of a different 

 colour. 



