ART. 24 SOUTH AMERICAN" SNAKES AMARAL 19 



with the anterior chin-shields which are a Uttle shorter than the 

 posterior; 3d. upper labial very large but 4th the largest; v. 267; 

 c. 29 p.; black with 61 yellowish- white cross-bars widening on the 

 belly which is barred with black and yellowish-white; white dorsal 

 scales usually with a black spot; tail yellowish with 3 black rings; 

 head as Boulenger's description for both mipartitus and microps; 

 total length, 740 mm. 



No. 62796, female, also sent by Mr. Goding: The same head shield 

 disposition; v. 274; c. 29 pairs + 1 single; coloration the same, 62 

 cross bars on the body and 4 on the tail; total length, 545 mm. 



82. MICRURUS FILIFORMIS (Guenther) 



Flaps filiformis Guenther, Proc. Zool. Soc. London, 1859, p. 86, pi. 18 

 fig. B. — BouLENGER, Cat. Snakes Brit. Mus., vol. 3, 1896, p. 430. 



Colombia. — 1 specimen, No. 4338, from Truando, New Granada, 

 in bad condition. 



83. MICRURUS ANCORALIS (Jan) 



Elaps marcgravi, var. ancoralis Jan, Icon. Ophid., pt. 42, 1872, pi. 4, fig. 2. 

 Elaps ancoralis Boulenger, Cat. Snakes Brit. Mus., vol. 3, 1896, p. 432. 



Ecuador. — 1 specimen. No. 12267, female, collected in Guayaquil: 

 V. 253, c. 32 p.; body with 15 triads of black rings, one on the tail 

 and one near the nape; a very defined anchor-shaped marking on 

 the occiput and nape; symphysial separated from anterior pair of 

 chin-shields by 1st pair of lower labials, which is exceptional in this 

 species; total length, 488 mm. 



84. MICRURUS NARDUCCH (Jan) 



Elaps narducci Jan, Arch. Zool. Anat. Physiol., vol. 2, 1863, p. 222 (type 

 from Bolivia). — Boulenger, Cat. Snakes Brit. Mus., vol. 3, 1896, p. 433. 



Ecuador. — 2 specimens, sent from Macas, Provincia d'El Oriente, 

 by M. Madira: No. 65473, female; v. 320; c. 20 p.; black above 

 with 52 transversely oval spots all yellow, some extending as irregular 

 blotches down to the sides; 2 yeUow rings on the tail as in Jan's 

 figure;^ total length 585 mm. No. 65474, male; v. 275; c. 23 p.; 

 coloration as in No. 65473, with 43 oval yellow spots; yellow 

 beneath, 1^ yellow rings on the tail; total length 497 mm. 



85. MICRURUS FRONTALIS (DumerU and Bibron) 



Elaps frontalis Dumeril and Bibron, Erp. Gen., vol. 7, 1854, p. 1223 

 (part). — Boulenger, Cat. Snakes Brit. Mus., vol. 3, 1896, p. 427. 



Argentina. — 1 specimen. No. 52592, collected in Mendoza by Dr. 

 Carlos S. Reed: 7 sets of 3 rings, the middle about 2 to 3 times as 

 wide as the center. 



• Icon. G6n., 1872, p. 42, pi. 6, flg. 5. 



