150 Trof. Dyer — On Oolitic Coniferce. 



superior to the type example at Bristol, notably in the more perfect 

 condition of the vertebral column ; the jaws, covered with pits for 

 the attachment of numerous and minute teeth, are present ; they 

 commence a little in front of the outer edge of the orbits, have a 

 slight forward bend, and probably meet beneath the snout at the 

 distance of half an inch from the transverse ridge ; none of the 

 teeth are present. The lateral nasal cartilages, connecting the head 

 with the pectoral fins, are well conserved, but of these fins there 

 are no remains ;^ a part of the left ventral fin joined to the pelvic 

 girdle is however present (PI. IV., Fig. 1 ?;.). Its entire length is 

 19 inches, the head and snout together measuring 7 inches. 



In conclusion, I would suggest that possessors of undetermined 

 portions of Lias fish remains should carefully examine the same, and 

 possibly other parts may be found which may help to give further 

 information as to the organization of this singular and interesting 

 fisk 



EXPLANATION OF PLATE IV. 

 Squaloraia polyspondyla, Agassiz. 



Fig. L An almost entire example of a male individaal. 

 Fig. 2. Detached rostrum of another male individual. 

 Fig. 3. Detached rostral spine of a male. 

 Fig. 4. Detached head and rostrum of a female. 



Fig. 5. Head of original specimen, described by Dr. Riley and Prof. Agassiz, copied 

 from table 42 of Agassiz's Poiss. Foss. 

 The above are all from the Lias of Lyme Regis, Dorset, and are drawn of the 

 natural size. 



Figs. 1 — 4 are preserved in the British Museum. 



IL — On some Conifbrotjs Eemains from the Lithogeaphio Stone 



OF SOLENHOFEN. 

 By W. T. Thiselton Dyer, B.A., B.Sc, F.L.S. 



I. Araucarites Haberleinii, Dyer. 



Th-e Geological Department of the British Museum possesses the 

 fine collection of fossils from the Solenhofen Oolites, which was 

 formed under specially favourable circumstances by Haberlein. Its 

 importance is at once apparent when it is remembered that it con- 

 tains the specimen of Archosopteryx macrura, described by Owen. 



The collection includes, besides the vertebrata, a large series of 

 more or less perfectly preserved plant-remains. The greater part of 

 these may be referred with some degree of certainty to the Coniferae, 

 although, with the rarest possible exceptions, they consist merely of 

 foliage. 



I have, however, I think, without doubt, determined amongst 



1 In the Upper Oolite, or Lithographic Stone of Solenhofen, and elsewhere, remains 

 of many species of Rays are found, some of large size, in which the fin-rays and the 

 dermal covering are perfectly conserved. There is in the British Museum an example 

 of a small species (Squatina speciosa, v. Mey.) from the above locality, in which these 

 parts are beautifully preserved. They are also found in a nearly equal state of pre- 

 servation in a fissile limestone of Cretaceous age in the Lebanon ; and of which 

 there are some good examples in the collection. 



