Euryapteryx compacta. This species is founded on a tibia from Enfield which closely resembles that of E. gravis, but is much smaller. From the tibia of M. didina it is distinguished by its greater robustness, and its greater width at the distal extremity. The distal extremity is, however, not expanded inwards as in Pachyornis, which at once distinguishes this tibia from that of P. pygmœus. Length, 15.2in. (386mm.); proximal width, 4.6in. (117mm.); width at middle of shaft, 1.6in. (39mm.); at distal end, 2.4in. (61mm.). The metatarsus which I place with this tibia much resembles that of P. pygmœus, but has the trochleæ considerably more expanded. Its length is 7.2in. (183mm.); the proximal width, 2.8in. (71mm.); middle of shaft, 1.6in. (41mm.); and distal width, 3.4in. (86mm.). The femur, which I have added with great hesitation, resembles that of M. didina, but has a larger head. Length, 9.1in. (231mm.); proximal width, 3.5in. (89mm.); width at middle, 1.4in. (36mm.); distal width, 3.6in. (91mm.). The association of these bones with the tibia is provisional only until further information is obtained; but the tibia cannot be placed in any previously-described species. Pachyornis inhabilis. This species is founded on an incomplete individual skeleton in the Canterbury Museum, the exact locality of which is not known, but probably it was found somewhere in Canterbury. It consists of the leg-bones, fifteen phalanges, a fragment of the pelvis, and six vertebræ. The metatarsus has a length of 8.5in. (216mm.); the proximal width is 3.8in. (96mm.); width of the shaft, 2.0in. (51mm.); and distal width, 4.5in. (114mm.). The inner margin of the entocondylar depression has no median ridge, and the hypotarsal ridges (talon) are equal. The bone much resembles the metatarsus of Euryapteryx ponderosa, but is not so robust; also the posterior surface of the middle trochlea rises abruptly from the shaft, and nearly at right angles with it, while in E. ponderosa it is very oblique, and merges more or less gradually into the shaft. From the metatarsus of E. gravis the present species can be recognised by being more expanded proximally. The tibia has a length of about 19.5in. (495mm.); the width of the shaft is 1.8in. (46mm.); and the distal width, 3.3in. (84mm.). It has the great inward expansion at the distal end, which is one of the characters of Pachyornis, and which distinguishes that genus from Euryapteryx. The femur has a length of about 11.5in. (292mm.); the proximal width is 4.5in. (114mm.); the width of the shaft, 2.0in. (51mm.); and the distal width is 5.0in. (127mm.). The