Viewed from the occlusal (incisal) aspect, all of the following are features of the maxillary canine EXCEPT:

From an occlusal/incisal view of a canine, you can see the cingulum, the lingual ridge with its flanking mesial and distal lingual fossae, and developmental grooves/depressions. The cervical line (CEJ) is a side-profile feature, best appreciated from a facial or lingual view rather than looking straight down the long axis of the tooth.