2. BLANCJS. 433 



2. BLANUS. 



Blanus, War/ler, Si/st. Amph. p. 197 ; Graij, Cat Tort. 1844, p. 72, 



(md Proc. Zool. Sor. 1865, p. 44C. 

 Amphisbasna, part., Du»i. i^- Bibr. v. p. 470. 



Nostril pierced in the Jirst labial; a large frontal, forming a 

 suture with the rostral. No enlarged pectoral shields. A well- 

 marked lateral lino ; a curved postgular fold. Tail pointed. Prae- 

 anal pores. 



Borders of the Mediterranean. 



The skull shows a lesser degree of specialization than in the other 

 Aniphisbsenoids : there is an indication of a postorbital process, and 

 the lower jaw is relatively long. 



Si/nojisis of the Species. 



Snout not projecting beyond the lower jaw; 



four lower labials, first and fourth smallest 1. cinereus, p. 433. 

 Snout projecting bej'ond the lower jaw; four 



lower labials, first and fourth smallest. ... 2. strauchii, p. 434. 

 Snout projecting beyond the lower jaw ; three " 



lower labials, first and second large 3. hcdriagce, p. 434. 



1. Blanns cinereus. 



Blanus cinereus, part., Grmi, Cat. Tort. p. 72, 

 and Sli. Rept. ii. p. 34. 

 Aniphisbsena cinerea, Vandelli, Mem. Ac. Sc. Lisb. i. 1797, p. 69; 



Gerv. Mag. Zool. 1836, p. 2, pi. x. ; Dvm. Sf Bibr. v. p. 500 ; 



Strauck, Mel. Biol. Ac. St. Petersb. xi. 1881, p. 416; Bedriaga, 



Arch.f. Nat. 1884, p. 24, pi. iv. 



oxyura, Wagl. in Spix, Serp. Bras. p. 72, pi. xxxv. fig. 1. 



HAmphisbseua rufa, Ilempr. Verh, Ges. Nat. Fr. Berl. i. 1829, 



p. 130. 

 Blanus cinereus, Wagl. Syd. Amph. p. 197 ; Schreib. Hcrp. Eur. 



p. 334. 

 ? Blanus rufus, Wiegm. Arch.f. Nat. 1836, p. 157. 



Prasmaxillary teeth 7; maxillaries 4 — 4; mandibulars 7 — 7. 

 Snout rounded, not at all projecting beyond the lower jaw. 

 Rostral moderate, trapezoid, forming a suture with the large frontal, 

 which is as broad as long or a little broader than long ; behind the 

 frontal three pairs of slightly enlarged square shields ; ocular small, 

 eye rather indistinct ; four upper labials, first largest, i)iercod by 

 the nostril, fourth smallest ; second labial forming a long suture 

 with the ocular and a very sliort one with the frontal. Mental 

 trapezoid, followed by a chin-shield of nearly equal size ; four lower 

 labials, the first and fourth small. A distinct transverse fold behind 

 the occiput. One hundred and ten to one hundred and twenty-five 

 annuli on the body, and twenty to twenty -two on the tail ; an an- 



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