ICHIHYOSATJRID^. 93 



limb) the adjacent carpale of the second transverse row notched. 

 Scapula resembling that of 1. tenuirostris. 



The type specimen indicates an individual of which the length 

 was about twenty-four feet. This species has been recorded only 

 from the Lower Lias, and appears to be of rare occurrence. 



Hah. Europe (England). 



14564. Slab showing the left lateral aspect of a very large skeleton ; 



{Fig.) from the Lower Lias of Lyme-Eegis, Dorsetshire. The 

 type specimen. Described by Owen in the ' Eep. Brit. 

 Assoc' for 1839, pp. 116-117, and figured by Hawkins in 

 his ' Sea Dragons,' pi. ii., and also by Owen in his ' Liassic 

 Eeptilia ' (Mon. Pal. Soc), pt. iii. pi. xxxi. figs. 4-7. One 

 tooth is figured by Owen in his ' Odontography,' pi. lxxiii. 

 fig. 2. A notice is also given on p. 384 of MantelPs 

 ' Petrefactions.' The lateral surface of the skull is pre- 

 served, but only a small portion of the upper surface is 

 shown : the hyoids are in their natural position. The 

 vertebral column is nearly complete, although some of the 

 centra have slipped upon one another. Of the limbs the 

 pectoral pair are very imperfect, and only fragments of the 

 pelvic ones are preserved. The right pectoral paddle, which 

 has been thrust to the left side, shows the notched radius 

 and radiale, and has only three longitudinal rows remaining, 

 although four may originally have been present. The 

 length of the cranial rostrum is equal to about three times 

 the diameter of the orbit. There are 120 vertebrae re- 

 maining, but a few arc missing in the caudal region. 

 This specimen is one of those collected by Miss Aiming. 



Hawkins Collection. Purchased, 1834. 



R. 1119. Slab showing the left lateral aspect of the anterior portion 

 of a comparatively small skeleton provisionally referred to 

 this species ; probably from the Lower Lias ofLymc-Eegis. 

 The skull lacks the extremity of the rostrum, but is other- 

 wise fairly well preserved. The teeth are relatively large, 

 and have long lanceolate crowns like those of the type. 

 The contour of the alveolar border of the mandible is also 

 similar. About 2G vertebrae are shown, and they have the 

 short and wide neural spines characteristic of this species. 

 The left scapula, and the two coracoids and humeri are 

 shown, although somewhat ill-defined. The humerus re- 

 sembles that of the type. The radius, ulna, and inter- 



