CATALOGUE OF SHIELD REPTILES. 



33 



C. Lateral and dorsal lines hot defined, or the lateral line only 

 risible oti the hinder part of the body. 



5. Sarea, Rostral rounded in front, placed behind the trian- 



gular nasal. 



6. Cadea. Rostral truncated at the tip, convex in front ; nasals 



oval, lateral. 



Tribe II. Anopina. Head compressed, keeled on the sides in 

 front ; the nostrils lateral, on the underside of the keels. 



A. Lateral line distinct and impressed. 



7. Anops. 



B. Lateral line none or only very slightly risible on the hinder 



part of the body. 



8. Baikia. 



rv. lepidosternid^:. Body with a sternal disk formed of 

 very differently shaped shields. 



Tribe I. Lepipostf.rnina. Head conical, covered with sym- 

 metrical polygonal shields. 



1. Lepidosternon. 



Tribe n. Cephalopeltina. Head depressed, covered above 

 with a flat, horny, nail-like shield, either simple or trans- 

 versely divided. 



A. Pectoral dish formed of large, diverging, unequal, polygonal 

 shields. Crown-shield divided across. 



2. Cephalopeltis. 



B. Pectoral disk formed of six or eight elongate longitudinal 



parallel ■shields. Head-shield single. 



3. Monotrophis. Head-shield without any slit on the hinder 



part of its side edge. 



4. Dalophia. Head-shield with a linear slit on the hinder part 



of its side edges. 



I. Teeth on the edge of the jaw. 



Fam. I. TROGONOPHIDiE. 



Head oblong, depressed, rounded below ; nostrils lateral, 

 in large nasal shields ; teeth conical, on the edge of the 

 maxilla. Body cylindrical, covered with rings of uniform, 

 elongate, oblong, four-sided shields, without any sternal 

 disk ; lateral line sunken, narrow, covered with a few 

 minute scales ; preanal pores none ; tail conical, acute. 



Glyphodermes acrodontes, Bum. $ Bibr. Erp. Gen. v. p. 467. 

 Trogonophidae, Gray, Cat. Tort. S,x. 1844, p. (18 ; P. Z. S. 

 1865, p. 445. 



1. TROGONOPHIS. 



Head oblong, depressed ; nasal shields large, united by a 

 short straight edge, behind the large triangular convex 

 rostral. Crown with two pairs of shields ; temple with 



many small shields. Upper labial plate moderate ; lower 

 labial shield larger, with a series of large chin-shields on 

 each side, and a central gular one. Tail conical, acute. 

 Preanal pores none. 



Skull something like that of Acontias. 



Trogonophis, Kaup, Isis, 1830, p. 880. 



Gray, Cat. Tort. #c. 1844 ; P. Z. S. 1865, p. 445. 

 Gervais, Ann. Sci. Nat. 1854, xx. 1. 15. f. 3 & 4, p. 6. 



1. Trogonophis Wiegmamii. 



Trogonophis Wiogmanni, Kaup, his, 1830, p. 880, t. S61. 

 Feruss. Bull. Sci. Nat. xxv. p. 203, 1831. 

 Dum. § Bibr. Erp. Gen. v. p. 470. 

 Gray, P. Z. S. 1865, p. 445. 

 Amphisboena elegans, Gervais, Bxdl. Sci. Nat. de France, 

 1855, p. 135 ; Mag. Zool. 1835, class 3. t. 11 (details 

 not good). 



Hah. Tangiers (Fraser, B. M. 1848) ; N. Africa (B. M. 

 1846) ; Algeria (Dumeril, B.M.). 



This animal was first described by Dr. Kaup, who showed 

 that the teeth of it were placed on the edge of the jaw, as 

 in the genera of the family Agamidce, which are all con- 

 fined to the eastern hemisphere and Australia, while all 

 the other genera of the order that have been examined 

 have the teeth on the inner side of the jaw, as in the 

 family lguamd.ee, which is restricted to the New World. 



It was afterwards described by M. Gervais ; and even 

 when Dr. Kaup had informed him, after inspecting the 

 specimens, that it was the same as he had previously 

 described, he still regarded it as new, because he said the 

 skull did not agree with Dr. Kaup's figure : but this was a 

 mistake. Dr. Kaup figured the skull of Trogonophis and 

 of an Amphisbcena for the sake of showing the difference 

 between them ; and M. Gervais must have compared his 

 animal with the wrong figure. 



II. Teeth on the inner side of the edge of the jaw. 



Earn. II. CHIR0TID.E. 



Head depressed, rounded on the sides ; nostrils on sides ; 

 teeth on the inner side of the maxilla. Body cylindrical, 

 covered with rings of uniform, oblong, four-sided shields, 

 and possessing two short weak front limbs provided with 

 five subequal clawless toes ; lateral line sunken, covered 

 with scales; preanal pores distinct. Tail cylindrical. 



Chirotida?, Gray, Cat. Tort. Sfc. B. M. 1844, p. 74 ; P. Z. S. 

 1865, p. 445. 



Heimaun, in ' Obs. Zool.,' thought this genus might be a 

 larva. 



