Key: Step 62. 61

61a. Tentacles usually with 5-7 pairs of digits, increasing in length distalwards. Intestinal canal straight; no muscular stomach.

Leptosynapta inhaerens

61b. Tentacles usually with 8-9 pairs of digits, not increasing in length distalwards. The intestinal canal forms a loop; a muscular stomach present.

Leptosynapta bergensis