J^ova Acta AiudemiiB JS'aturce Curiosorum. 481 



figured are Cass. Andromeda, [Medusa Andromeda, Forsk. ) , Cass, rhizos- 

 tomoidea, CCassiopee Borlase, Per,,y Cass, frondosa. Pall., and Cass. 

 Canariensis, a new species discovered by the authour at Teneriffe, and 

 especially remarkable for a circle of eight smaller arras placed within 

 the larger, and supported at the extremity of a second and smaller 

 pedicel. This duplication of the arms he compares with a parallel 

 structure in a species of Loligo, also found by himself in the Chinese 

 seas, which he figures on the same plate under the name of Loligo 

 eoroUiJlora. In illustration of this last he refers to a second species 

 exhibiting a similar structure described and figured by M. Lesueur in the 

 " Journal of the Academy of Natural Sciences of Philadelphia," under the 

 name of Loligo Pealii, in which the internal armlets are much smaller, 

 scarcely projecting beyond the fold from whence they take their origin. 

 The descriptions are given with great minuteness ; and the figures are 

 well executed, shewing the species in various aspects, and occasionally 

 with some detail. 



Of the papers in Fossil Zoology, in which the present volume is un- 

 usually rich, the first is entitled " Beschreibung einer neuen Art der 

 Gattung Pterodaclylus, Cuv., Ornithocephalus, Soem., von Georg Grafen 

 zu Munster." This new species of Pterodaclylus was discovered by 

 Count Munster in the collection of Dr. Schnitzlein at Monheira, who 

 received it from Meulenhard, near Daiting, in the district of Monheim, 

 where it was found in the same quarry and in the same stratum as the 

 well-known Crocodilus priscus, Seem. On the surface of the block there 

 were visible only the vertebral column, the right scapula, some of the 

 ribs, and a portion of the right ymwr and of the humerus ; the con- 

 tiguous blocks containing the cranium and bones of the foot and hand 

 having been lost by the ignorance of the quarrier. The specimen hav- 

 ing been consigned to Count Munster, he immediately set about dissect- 

 ing the remaining portions of the skeleton, which he found a work of 

 considerable difficulty on account of the hardness and firm consistence 

 of the stone. He succeeded, however, at length in freeing them from 

 their envelope with little injury, and was fully rewarded for his pains 

 by the discovery that his specimen, instead of belonging as he at first 



Vol. V. I r 



