354 Recent Literature. [ie 
This seems to show that the relative size of the bill is not a constant differ- 
ence. 
We had occasion to criticise the brevity of some of Mr. Mathews’ 
diagnoses in former parts of his work, and the general lack of measure- 
ments. He says in reply to this criticism (p. 148) “if I gave pages of 
measurements, as is the custom of my American friends, it would not 
prejudice any worker in favor of my subspecific forms,” and adds, “ the 
work [of measuring] must be done, but the results only are necessary, not 
the methods whereby the results were achieved.’”’ Mr. Mathews seem to 
have misunderstood our criticism. We did not demand all the individual 
measurements, we quite agree with him on that point. What we did 
demand were measurements of some sort, either averages or those of a 
typical individual, in all cases where relative size is taken as the basis for 
subspecific differentiation. In the present numbers of the work there are 
a gratifying number of measurements. 
The following new forms are proposed in the two parts before us. In 
Part Il: Calyptorhynchus banksii samueli (p. 120), Cent. Austr.; Callocory- 
don fimbriatus superior (p. 158), N.S. Wales; Kakatoé galerita interjecta 
(p. 184), Victoria; K. g. aruensis (p. 187), Aru Isl.; Lophochroa lead- 
beateri superflua (p. 196), S. Australia; Ducorpsius sanguineus westralensis 
(p. 211), Mid-west Australia; D. s. normantoni (p. 211), Queensland. 
Also the following new genera: Callocorydon (p. 150), type Psittacus 
fimbriatus Grant. Eucacatua (p. 169), type Psittacus galeritus Lath. 
In Part II: Holophus roseicapillus howei (p. 234), Victoria; and the new 
genus Layardella (p. 289), type Psittacus tabuensis. This takes the place 
of Pyrrhulopsis Reich. which is based upon an unidentifiable figure of the 
head of a parrot.— W. 8. 
Matthew and Granger on Diatryma.'— Mr. William Stein of the 
American Museum’s Paleontological Expedition of 1916, was fortunate 
enough to discover a nearly complete skeleton of this remarkable bird 
previously known only from a few fragments obtained by Prof. E. D. Cope 
in 1874, in the Wasatch formation of New Mexico, and some others ob- 
tained in the Eocene of Wyoming, in 1911, by Mr. Granger. A single toe 
bone from the Eocene of New Jersey described by Prof. Marsh as Barornis 
regens has been referred to the genus by Dr. Shufeldt, but is regarded by 
the present authors as “ practically indeterminate.” 
For the first time therefore we are able to determine what this extinct 
bird looked like and what are its relationships. It was about seven feet 
in height, ground-living, with vestigial wings, and with a shoulder girdle 
remarkably like that of the Cassowary. The resemblance to the Ratite 
birds is however considered by the authors to be due to parallelism and 
1 The Skeleton of Diatryma, a Gigantic Bird from the Lower Eocene cf Wyoming. By 
W. D. Matthew and Walter Granger. Bull. Amer. Mus. Nat. Hist., Vol. XX XVII, 
Art. XI, pp. 307-326. May 28, 1917. 
