Miscellaneous. 489 



portion to the condyle ; its plane coincides with that of the occiput, 

 which is slightly inclined forward. The bones around the foramen 

 are firmly coossified ; but the supraoccipital has separated somewhat 

 from the squamosals and parietals. Other sutures are more or less 

 open. On each side of the condyle, and somewhat below its lower 

 margin, there is a deep rounded cavity, perforated by a pneumatic 

 foramen. 



The cavity for the reception of the head of the quadrate is oval 

 in outline ; and its longer axis, if continued backward, would touch 

 the outer margin of the occipital condyle. This cavity indicates 

 that the quadrate had an undivided head. The brain-case was com- 

 paratively small ; but the hemispheres were weU developed ; they 

 were separated above by a sharp mesial crest of bone. A low ridge 

 divided the hemispheres from the optic lobes, which were pro- 

 minent. 



The following measurements indicate the size of the specimen : — 



miUim. 

 Width of skull across occiput (approximate) .... 24 



Transverse diameter of occipital condyle 5 



Vertical diameter 4 



Width of foramen magnum 5 



Height 6 



Distauce from occipital condyle to top of supra- 

 occipital 11 



In its main features the present specimen resembles the skull of 

 the Ratitse more than that of any existing birds. Other parts of 

 the skeleton will doubtless show still stronger reptilian characters. 



In the matrix attached to this skull a single tooth was found, 

 which most resembles the teeth of birds, especially those of Ichthy- 

 ornis. It is probable that Laopteryx possessed teeth and also biconcave 

 vertebrae. 



The specimen here described, and others apparently of the same 

 species, were found in the Upper Jurassic of Wyoming Territory, in 

 the horizon of the Atlantosaurns-hQA.?,. 



Yale College, New Haven, March 18, 1881. 



Begeneration of lost Parts in the Squid (Loligo Pealei). 

 By A. E. VerpvIli,. 



I have observed in this species, as well as in Ommastrephes ille- 

 cehrosus, numerous instances in which some of the suckers have been 

 torn off and afterwards reproduced. In such examples new suckers 

 of various sizes, from those that are very minute up to those that 

 are but little smaller than the normal ones, can often be found scat- 

 tered among the latter, on the same individual. It seems to me 

 possible that some of the specimens having the suckers on the tenta- 

 cular arms unusually small, may have reproduced all those suckers, 

 or, still more likely, the entire arm. 



I have seen specimens of this species, and also of 0. illecebrosiis. 



