168 



OOLITIC ASTEROPECTINID^ 



Honorary Secretary of the Club, for permission to use the woodcut to illustrate my 

 description of the species in this Monograph, for which I return Dr. Paine my very best 

 thanks. The figure is drawn to scale twice the natural size and is reversed. 



Additional Notes on Genera belonging to the Family 

 AsTROPECTiNiD^, Miiller and Troschel. 



Astropecten RECTUS. PI. XIX, fig. \ a, b. 



The specimen of this species, figured in PL XII, is only a horizontal section of the 

 skeleton just as it was entombed in the Calcareous Grit. Since that plate was drawn I found 

 in the collection of my late friend Mr. John Leckenby, F.G.S., a fragment which shows 

 the structure of the marginal ossicles, and is now figured in PI. XIX, so that we are able 

 to make a tolerably perfect restoration of this fine Star-fish of the Corallian seas. Each 

 of the marginal plates appears to have carried a kind of socket, probably for the articu- 

 lation of a spine. They all have rounded margins and a cancellated structure, so well 

 depicted by my late able and accurate artist friend, Mr. C. R. Bone, in fig. 1 a and 

 fig. 1 b. 



Pig. 1, Plate XII, was drawn from a specimen in the collection of the Rev. T. 

 Wiltshire, F.G.S. 



Astropecten Hooperi, Wright, n. sp. PI. XXI, fig. 3 (p. 123). 



Fossil Asteuia. Loudon's Mag. of Nat. Hist., vol. ii, p. 73, fig. 19, 1829. 



This beautiful Astropecten was found by the Rev. James Hooper, Rector of Stawell, at 

 Horsington, Dorset, and a good sketch of the original fossil was communicated by 

 W. H. R. N., Yeovil, 21st August, 1828, to Mr. Loudon's * Magazine of Natural 

 History.' " The Starfish was taken from a stratum of Cornbrash, and is a very perfect 

 specimen. The sketch and the figure are the exact size of the original." 



Many years ago, when my ' Monograph on the Fossil Asteroidea ' was passing 

 through the press, I made several inquiries about this specimen, which I failed to 

 trace, as the figure at that time and since had been entirely overlooked. I have, 

 therefore, had a copy made of the woodcut in Loudon's Magazine, as it is the only Star- 

 fish I know from the Cornbrash, and it is right that it should find a place among its 

 congeners in this Monograph. 



Diagnosis. — Rays five, short, acutely lanceolate ; sides straight, intermediate angles 



