MR. R. B. SHARPE ON A NEW SPECIES OF GOSHAWK. 457 



small calcareous ossicle. Bohlsche did not separate the pieces of 

 the calyx, and was therefore unable to determine whether there 

 are really three rows of radials, as in the ordinary Gomatulce, or 

 not : but if, as in Gomaster, there are only two rows, then the 

 small ossicles appearing externally between every two pieces of 

 the first row would represent the basals of Gomaster. The- condi- 

 tion of their central ends is unfortunately still unknown to us, 



Gomaster further differs from all the Gomatulce with which we 

 are acquainted, and also from Solanocrimis, in the fact that the ner- 

 vous cords are not lodged in canals which perforate the pieces of 

 the calyx, but lie freely on the superior surfaces of the segments, 

 the opposed terminal faces of which lie flatly against one another. 

 The muscles and ligaments lie along their concave inner sides and 

 cover in the freely exposed nerve-cords : from the palmar axilla- 

 ries onwards, however, all the segments have articular surfaces of 

 the usual character, and are perforated by central canals in which 

 the nerve-cords lie. This condition of the segments of the calyx 

 of Gomaster is of great interest ; for, besides being the normal 

 permanent condition in the tessellate Crinoids, it is the embryonic 

 condition, so far as the position of the nerve-cords is concerned, in 

 Gomatula. 



These facts will suffice to show the very great differences that 

 exist, in the skeleton alone, between Gomaster and the other mem- 

 bers of the family Comatulidse, including Solanocrinus — with which 

 genus it has been united, on account of the appearance of the 

 basals on the exterior of the calyx. In Solanocrinus, however, as in 

 the other Comatulidse, the first radials are perforated by central 

 canals for the nerve-cords ; and the absence of this character in 

 Gomaster would alone justify our referring these two forms to 

 separate genera, even were this the only difference between them, 

 which, as shown above, is by no means the case. 



Contributions to the Ornithology of New Gruinea. By E. 

 BowDLER Shabpe, I'.L.S., F.Z.S., &c. — Part III. On a new 

 Species of Groshawk from the Island of Jobi. 



[Read June 21, 1877.] 

 (Plate XXII.) 



In the collection of Accipitres submitted to me by Dr. Meyer, 

 and obtained by him during his voyage to Papuasia, there was a 



J.INN, .JOUEN. ZOOLOGr, VOL, XIII. 38 



