ICHTHYOSAURID.E. 



53 



Ichthyosaurus conybeari, Lydekker \ 



The two following specimens present characters connecting them 

 both with 7. communis and /. intermedins, and apparently indicate 

 another species, presenting the following characters ; the second 

 specimen being the type. Teeth small, and skull relatively long in 

 proportion to the vertebral column and limbs. Pectoral limb of 

 moderate width, with anterior border of some of the first row of 

 phalangeals notched. Pelvic limb with six longitudinal rows of 

 phalangeals, and anterior border of the tibiale and adjacent tarsale 

 of the second row notched. 



It is not improbable that the skeleton in the Woodwardian 

 Museum, Cambridge, from the Lower Lias of Barrow-on-Soar, 

 recorded as No. 11 on page 138 of Seeley's ' Index to Aves &c. in 

 Cambridge Museum ' (1869), belongs to the present form. That 

 specimen has six longitudinal rows of phalangeals in the pelvic limb, 

 as in No. 1065. The name I. latimanus, Owen 2 , cannot be applied 

 to this form, for the reasons given under No. 1065 ; the vertebrae 

 figured under that name by Owen in his ' Liassic Eeptilia ' (Mon. 

 Pal. Soc), pt. iii. pi. xxxiii., are from the Kimeridgian, and are 

 noticed under the head of 1. entheciodon (supra, pp. 33, 34). 



Hah. Europe (England). 



1065. Cast of a slab showing the nearly entire skeleton of a medium- 

 sized individual, probably specifically identical with the 

 next specimen. The original was obtained from the Lower 

 Lias of Saltford, near Bath, Somersetshire ; and is pre- 

 served in the Museum at Bristol. The skull, although 

 somewhat crushed, is well preserved, and is exhibited 

 from the ventral aspect. The nearly entire vertebral 

 column is also shown in an almost undisturbed condition. 

 Both coracoids remain, one having been thrown down near 

 the extremity of the rostrum ; but the only traces of the 

 pectoral limb are a few phalangeals near the displaced 

 coracoid. Both pelvic limbs are preserved, and are still 

 in connection with the pelvis, but have been thrust 

 towards the thoracic region. There are six longitudinal 

 rows of phalangeals in the pelvic limb, and the notching 

 of the tibiale and adjacent tarsale is distinctly visible in 

 the cast. It is stated that in the original specimen 

 impressions of the soft parts can be seen in the matrix of 

 the caudal region. It appears that Owen's Ichthyosaurus 



1 Geol. Mag. dec. 3, vol. v. p. 311 (1888). 

 J Rep. Brit. Assoc, for 1831), p. 123 (1810). 



