A, aorta; B, superior vena cava; C, C, right pulmonary veins; D, inferior vena cava; E, section of coronary vein; F, right ventricular cavity; H, posterior curtain of the tricuspid valve; K, right auricular cavity; M, fossa ovalis, oval depression, partition between the auricles formed after birth.

Fenestra ovalis and fenestra rotunda, the oval and the round window; two apertures in the bone between the tympanic cavity and the labyrinth of the ear.

See Prunus, Andromeda arborea, axillaris, calyculata, cassinaefolia, Catesbaei, fastigiata, floribunda, globulifera, japonica, Mariana ovalis, ovalifolia, pilifera, polifolia, recurva, speciosa, tetragona, Angelica tree, Aralia japonica, mandshurica, Sieboldii, spinosa, Aralia.

On the trunks of various trees along the path, especially a thorny-stemmed Bombax, the pretty Bulimus papyraceus is common, with an occasional B. auris-leporis, but I never during my walks was so fortunate as to find any of the more magnificent of the Brazilian landshellsfor example, B. ovalis, a noble species, four or five inches in length, of which I have bought live specimens in the market.