108 Transactions. — Zoology. 



In the tables of measurements of the species, the girth in 

 the leg-bones is taken in the middle of the shaft. The 

 length of the pelvis is that of the pre-acetabular portion of the 

 ilium only, and the breadth is taken at the anti-trochanters. 

 The breadth of the sternum is taken across the body just 

 below the costal region. The length of the skull is taken from 

 the supra-occipital protuberance to the commencement of the 

 nasals, the depression for which is often preserved; the 

 breadth of the skull is taken at the squamosals, and the 

 height is the vertical from the basi-temporal. Other mea- 

 surements are given when known, and explain themselves. 



In the tables of measurements given for each species, an 

 exclamation point (!) prefixed means that all the measure- 

 ments along that line are taken from the same individual bird. 

 If no exclamation point is prefixed the measurements given 

 are only inferred to belong to bones of the same species. 

 The maximum and minimum measurements give the limits in 

 size, and in robustness of the legs, allowed to each species. 



None of the measurements given are hypothetical. All are 

 either from actual specimens or from Professor Owen's plates, 

 with the single exception of the length of the metatarsus in 

 A. antiqiius. 



Genus DINOENIS.- 



Dinornis (part) and Palapteryx (part) of Owen ; Dinornis, 

 Movia, and Moa of Reichenbach ; Dinornis of Haast. 



Skull depressed, the lambdoidal ridge flattened, and the 

 parietals hardly rising above it. Breadth at the squamosals 

 about twice the height from the basi-temporal. Length from 

 the supra-occipital to the nasals less than the breadth at the 

 squamosals. Occipital condyle pedunculate, hidden laterally 

 by the paroccipital processes. Beak rather longer than the 

 head, depressed and obtuse at the tip ; the lower jaw much 

 curved. 



Sternum with well-marked oval coracoid pits ; the length 

 of the body t rather more than one-half the breadth ; 

 costal processes slightly developed ; the lateral processes 

 long, diverging from the middle line at an angle of between 

 35° and 50°, but curving inwards again ; X median process 

 generally notched at the end. Only two pairs of sternal ribs 

 articulating with the sternum. Scajnilo-coracoid always pre- 

 sent, without any glenoid cavity. 



* Greek Setvos, terrible. 



IThe " corpus-sterni " of Prof. T. J. Parker, Phil. Trans., vol. 

 clxxxii., p. 85. 



I See, however, the remark under D. firmus. 



