CATALOGUE OF SHIELD REPTILES. 



13 



2. Boinbifrons siamensis. (Siamese Muggar.) 

 The face depressed, elongate, nearly smooth, with a slight 

 nodule in front of the orbits ; intermaxillaries rather 

 elongate, half oblong. 



Crocodilus niloticus, Latr. Rept. i. p. 206, t. (from Fau- 



jas de St.-Fond, Mont. St.-Pierre, t. 43). 

 Crocodilus siamensis, Schn. Amph. p. 157. 



Gray, Syn. p. 60; Cat. Tort. Sf Croeod. /!. M. p. 63 

 (monstrosity)"? (from Perrault, Hist. Acad. Sci. iii. 

 p. 255, t. 54). 

 Giiniher, Rept. B. I. t. 18. f. 3. 

 Strauch, Croc. p. 50. 

 Crocodilus galeatus, Cuvier, Oss. Foss. v. p. 52, t. 1. f. 9 

 (from Perrault). 



Bum. fy Bibr. Erp. Gen. iii. p. 11:'.. 

 Crocodilus palustris (part.),Z)»/». 4' Bibr. Erp. Gre'ji.iii.p. 113. 

 Crocodilus vulgaris (part.), Gray, Syn. p. 58. 

 Dum. 4" Bibr. Erp. Gen. ii. p. 108? 

 Mutter 4~ Schlegel, Verh. t. 3. f. 9 (head?). 

 Crocodilus vulgaris, Owen, Cat. Osteol. Mas. Call. Surg. 



p. 107.no. 718? 

 Boinbifrons siamensis, Gray, Ann. Sf Mag. Nat. Hist. 3rd 

 series, x. p. 269 ; Trans. Zool. Soc. 1869, vi. p. 144. 



Hab. Siam, Cambojia (M. Mouhot). 



There is a well-preserved half-grown specimen of this 

 species in the British Museum. It differs from all the spe- 

 cimens of Bombifrons indieus in the collection in the face 

 being much longer and not so tubercular and pitted. 



It has four series of nearly equal-sized, uniformly shaped, 

 and keeled shields, with three interrupted series of unequal- 

 sized smaller shields on each of the sides ; those of the outer 

 series are the longest. 



As the head agrees with the figure of the head from which 

 Schneider named his species, I have retained it ; and I have 

 little doubt that the two keels which are present in that 

 specimen are either an individual peculiarity or perhaps a 

 character that developed itself as the animal approached 

 old age. , 



The skull of the young animal in the Museum of the 

 College of Surgeons, no. 718, appears to belong to this 

 species ; but it requires more comparison. It is clearly a 

 Bombifrons, and it is much smoother and longer than the 

 skull of B. indieus of the same size and age. Prof. Owen 

 observes, " The palatine suture between the premaxillary 

 and maxillary bones passes obliquely backwards a little 

 way at its commencement, and then extends truncated 

 across ; but the premaxillary bones are larger than in the 

 second Gangetic Crocodile. There is a small palpebrary 

 ossicle above the anterior angle of the eyes." — Owen, I. c. 

 p. 157. no. 718. 



There is a young specimen of a Crocodile, received from 

 Singapore, which somewhat resembles the one from Siam 



in the form of the head, and has six series of strongly 

 keeled shields on the back ; but the four middle ones, pf 

 nearly equal size and form, and those of the outer series, 

 are narrower, aud there is a scries of much smaller ones 

 below on each of the sides. I am by no means convinced 

 that this will form a distinct species ; it is probably only 

 an accidental or local variety. 



** The legs with an indented fringe of short narrow scales. 

 Toes short, nearly free. American Crocodiles. 



3. PALINIA. 



The face oblong; forehead very convex, with a ridge in 

 front of each orbit, converging in front and forming a 

 lozenge-shaped space. Nuchal plates two or four, unequal. 

 Cervical disk rhombic, of six large plates. Dorsal plates 

 large, broad, in six series ; the vertebral series nearly smooth, 

 the lateral one strongly keeled. The intermaxillary short, 

 truncated behind the premaxillary, suture straight, trans- 

 verse. (See Cuvier, Oss. Foss. iii. p. 72, t. 3. f. 1-5.) 



Palinia, Gray, Cat. Tort. $ Croeod. B. M. Is44; Ann. ,\ 

 Mai/. Nat. Hist. 3rd series, x. p. 270 ; Trans. Zool. Soc. 

 1869, vi. p. 145. 



1. Palinia rhombifera. (Cuban Palinia.) 



The upper surface of the forearms and thighs covered 

 with convex keeled scales ; the outer edge of the legs and 

 feet with a series of very elongate scarcely raised scales, 

 forming only a slight fringe. The toes short, scarcely 

 webbed. 



Aquez palin, Hernand. Nov. An. Mem. ii. p. 2. 

 Crocodilus rhombifer, Cuvier, Ann. Mus. H. N. x. p. 5 1 ; 

 Oss. Foss. v. p. 51, t. 3. f. 1-4. 



Tiedem., Oppel, Sf Lebosch, Nat. Amph. p. 75, t. 10. 



Gray, Syn. Rept. p. 59. 



Bum. 4' Bibr. Erp. Gin. iii. p. 97. 



Sagra, Cuba. t. 4. 



Strauch, Croeod. \>. 41. 

 Crocodilus rhombifer. Huxley, Proc. Linn. Sue. iv. p. Ik. 



Blainv. OsUog'. ('rue t. 5. f. 3 (head?) (not Owen). 



Burnt. Gavial. t. 2. f. 4, t. 3. f. 5 (head). 

 Crocodilus (Palinia) rhombifer, Gray, Cat. Tort. Sf Croc 

 B. M. p. 63 ; Ann. $ Mag. Nat. hist. 3rd ser. x. p. 270. 

 Crocodilus planirostris, Graves, Ann. Gen. des Sci. Phys. ■/> 

 Bordeaux, ii. p. 348. 



Gray, Syn. Rept. p. 59. 

 Crocodilus Gravesii, Bora de St. -Vincent, Diet. Class. H.N. 

 iii. p. 109, t. . 



Bum. 4' Bibr. Erp. Gen. iii. p. 101. 

 Palinia rhombifera, Gray, Trans. Zool. Soc. 1869, vi. p. 145. 



Hah. South America, Cuba (W. S. MacLeay, Ramon de 

 la Sagra). 



