68 PROCEEDINGS OF THE NATIONAL MUSEUM vol.66 



The scale formula of the three other names upon further analysis 

 will be found to be composite. The curA es of the number of ventrals 

 and subcaudals (fif?s. 5-6) show that in reality N. percaHnata has 

 the same short body and long tail as N. piscator^ while in N. annu- 

 laris the body is relatively much longer and the tail shorter. No 

 separate diagram of N . hahereri could be given as only the extremes 

 of the six cotypes are given, namely, 163-164 ventrals and 53-65 

 subcaudals, but these figures are clearly within the curve of N . an- 

 nularis. As the chief distinction of A\ hahereri is supposed to be the 

 smoothness of the three outer scale rows and as this character has 

 been shown to be of no significance, there can scarecely be any ob- 

 jection to following Boulenger's example in regarding N. hahereri as 

 a synonym of N. annulai^s. 



NATRIX ANNULARIS Hallowell 



1856. TroijidoHOtiis anntihiri.s Hallowell, Proc. Acad. Nat. Sci. Philadel- 

 phia, 1856, p. 151 (type-locality, Ningpo, China; type in Mus. Phila. 

 Acad.; Dr. McCarter, collector). — Boulengek, Cat. Snakes Brit. Mus., 

 vol. 1, 1893, p. 233; vol. 3, 1896, p. 605 (Mts. N. of Kiukiang ; Chikiang; 

 Ningpo; Da-laen-saen, SW of Ningpo; Formosa). — Werner, Abh. Bayer. 

 Akad. Wiss., II KL. vol. '22, pt. 2. 19(«, p. 303. — Stanley, .Tourn. N. China 

 Asiat. Soc, vol. 45, 1914, p. 28 (Kiangsu; Chekiang; Fukien). — Gee, 

 Journ. N. China Asiat. Soc, vol. 50, 1919, p. 184 (Soochow, Kiangsu). 

 Notrix anmilaris Ste.tneger, Herp. Japan, 1907, p. 291 (Formosa). 



1859. Tropidonotus chinensis "Jan" Berthold, Nachr. Univ. Ges. Wiss. 

 Goettingen, No. 17, Sept. 12, 1859, p. 180 (type locality, China; type in 

 Mus. Goettingen). 



1859. Tropidonotus semifasciaUis Berthold, Nachr. Univ. Ges. Wiss. Goet- 

 tingen, No. 17, Sept. 12, 1859, p. 180 (alternative name). 



190. Tropodonotus hahereri Werner, Abh. Bayer. Akad. Wiss., II Kl., vol. 

 22, pt. 2, 190, p. 54, pi. 1, figs. 1-2 (type locality, Ningpo Mts. near Shang- 

 hai ; types in Mus. Munich; Dr. Haberer, collector). 



Two specimens from Fukien, No. 64644 collected by C. R. Kel- 

 log at Kuliang, and No. 65409, by Mr. Sowerby at Foochow, belong 

 undoubtedly to this species. This is rather surprising in view of the 

 fact that the related N. percarinata was described from this province. 

 Nevertheless, both structurally and in coloration they are typical .V. 

 annularis. The scale formulas are given below. In addition it may 

 be stated that No. 65409 on both sides and No. 64644 on the left side 

 have nine supralabials, fifth higher than fourth and sixth, and exclu- 

 sively touching the eye, while on the right side there are only eight 

 labials, the fourth only touching the eye. In both specimens the 

 rostral is nearly as wide as high, the interparietal suture is as long 

 as the frontal and longer than the latter's distance from the tip of 

 the snout, and the diameter of the eye equals the width of the 

 frontal in the middle. In both, the keels on the second scale row 

 are very faint or even entirely absent. No. 64644 has 38 black 

 rings on the under side of the body No. 65409 has 39. Both have 

 supralabials white, edged with black. 



