EUTAENIA ORDINOIDES. 153 



4. ECTAENIA ORDINOIDES, B. & G. 

 (Plate XIV, figs. 1-4.) 



CHAR. SPEC. -Corpore brevissimo. Scuto praeorbitali uno; postorbita- 

 libufs iribtis. Squamis dorsuaUbus in series novemdecim vel viginti 

 intum difipositis, extrema serie ampliore, carinata. Squamis caudalibm 

 valde oarinatie. Vitta ttna dorsuali, ima quoque laterali, fiaveis ; 

 duabns nifjrarum maculamm seriebus in utroque lalere : colore inter 

 maculas serici superiorisfusco-rubescente; inferioris vero, olicaceo. 



SPEC. CHAR. Body rather stout. One anteorbital ; three postorbital 

 plates. Dorsal scales in nineteen or twenty-one rows ; exterior one 

 largest and carinated. Caudal scales strongly carinated. A yellow 

 dorsal stripe, and one on each side. Flank with two series of black 

 spots : between the lower series reddish-brown ; between the upper 

 series olivaceous. 



SYN. Tropidonotus ordinoides, B. & G. Proc. Acad. Nat. Sci. Philad. VI, 1852, 176. 

 Eutaenia ordinoides, B. & G. Catal. N. Amer. Kept. I, 1853, 33. 



DESCR. This species attains quite large dimensions. The body is 

 very stout, and the tail small and tapering. The postnasal plate is 

 much smaller than the prenasal, in which the nostril is exclusively 

 situated. There is one anteorbital and three postorbitals, nearly 

 alike. The eye is of but moderate development. The fourth and 

 fifth labials constitute the inferior rim of the orbit; the sixth and 

 seventh are the largest; their entire number is eight, whilst the lower 

 labials are ten, the fifth and sixth of which are the largest. 



The dorsal scales are disposed upon nineteen or twenty-one longitu- 

 dinal series, all of which are carinated, the external series being much 

 larger than the rest. The abdominal scutellae are one hundred and 

 sixty-one to one hundred and sixty-seven in number; the subcaudal 

 ones averaging between sixty-seven and eighty-five. 



A very strongly defined dorsal stripe of a yellowish color, occupies 

 one and two half-scales. A second line, less distinct, exists along the 

 second and third rows of scales. On each side, between the dorsal 

 and lateral stripes, are two series of subquadrate black spots, eighty to 

 eighty-four in number, arranged alternately, and occupying portions 



39 



