. Geological magazine . e Upper Devonian. Pro-fessor Dewalque states that, for important reasons, he believesthe Agelacrinus of Mourlon, 1881, to be the same species as a certain asterie, to which Mr. Mourlon referred in 1875 as being in collection Malaise. This asterie, according to Prof. Dewalque,is a specimen of his Protaster Decheni, from the Assise these beliefs were justified, it would follow that DinocystisBarroisi was not the same as the Agelacrinus of Mouilon, and itwould be referred to the same horizon on no better evidence than aninaccurate dealers label. Since the validi
. Geological magazine . e Upper Devonian. Pro-fessor Dewalque states that, for important reasons, he believesthe Agelacrinus of Mourlon, 1881, to be the same species as a certain asterie, to which Mr. Mourlon referred in 1875 as being in collection Malaise. This asterie, according to Prof. Dewalque,is a specimen of his Protaster Decheni, from the Assise these beliefs were justified, it would follow that DinocystisBarroisi was not the same as the Agelacrinus of Mouilon, and itwould be referred to the same horizon on no better evidence than aninaccurate dealers label. Since the validity of Professor Dewalques criticism entirelydepends on important reasons, we should be warranted in dis-regarding it until those reasons have been published. But the highauthority of my critic, no less than the difficulty of attributing soincomprehensible an error to the learned director of the ServiceGeologique de Belgique, has led me to investigate the questionafresh. The results more than justify my former Dinocystis Barroisi: pliotograpliic reproduction (reduced to f) of a pencil-drawingmade for Mr. Mourlon in 1881, from tlie specimen then referred by him toAgelacrinus. The position of the anus was not observed by the draughts-man ; it may well have been in the rather irregular interradius to the rightin the drawing of the actinal surface. Professor C. Malaise kindly informs me that the above-mentioned asterie is still in his collection, that it is a specimen of ProtasterDecheni, Dewalque, and that the bed at Walcourt from which itcame belongs, in his opinion, to the Assise dEsneux (not theAssise dEvieux, to which the tj^pe-speciraen is now referred). 136 Obituary—Mr. William Colclieder. Mr. Mourlon most courteously sends me a drawing, here reproduced,of the specimen mentioned by him as Agelacrinus in 1881. It isnot the asterie of Professor Malaise ; it is not a Protaster Decheni,or any kin thereto ; but it is a fine specimen of an Edrioasteroid,as large as, a
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