The leaves, which are borne in pairs at the tumid nodes, are oval in form and have a Dicotyledonous type of venation.
4 in.), the Yagans present in some respects a more debased type characterized by low brows, prominent zygomatic arches, large tumid lips, flat nose, loose wrinkled skin, black restless eyes very wide apart, coarse black unkempt hair, and head and chest disproportionately large compared with the extremely slender and outwardly curved legs.
There are some pleasing passages in Arnobius, but on the whole he is a tumid and a tedious author.
The tentacles surround an area known as the peristome, in the middle of which there is an elongated mouth-opening surrounded by tumid lips.
In some species certain of the legs bear on their ventral sides furrows with tumid lips and lined by smooth non-tuberculate epithelium; they are called coxal organs, and it appears that they can be everted.