Sera ALY eee ee 
Nova Acta Academia Nature Curiosorum. 48] 
figured are Cass. Andromeda, (Medusa Andromeda, Forsk.), Cass. rhizos- 
tomoidea, (Cassiopée Borlase, Pér.,) Cass. frondosa, Pall., and Cass. 
Canariensis, a new species discovered by the authour at Teneriffe, and 
especially remarkable for a circle of eight smaller arms 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 aspecies of Loligo, also found by himself in the Chinese 
seas, which he figures on the same plate under the name of Loligo 
corolliflora. 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 Pterodactylus, Cuv., Ornithocephalus, Sem., von Georg Grafen 
zu Munster." This new species of Pterodactylus was discovered by 
Count Munster in the collection of Dr. Schnitzlein at Monheim, 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, Sem. 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 femur 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 hay~ 
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 
Vou. V. I 
