Heptiles and Batrachians fi'om Paraguay. 343 



3. Tropidurus spinulosuSy Cope. 



4. Ophiodes intermedhis, s{). n. 



Intermediate between 0. striatus and 0. vertebralia. Scales 

 in 25 or 27 rows, as in tlie former. Interparietal not broader 

 than the parietals, narrower than the frontal; three larije 

 chin-shields on each side in contact with the lower labials. 

 Bronzy above ; a tine black vertebral line ; a dark brown 

 stripe on each side, occupying one scale and two halves, 

 between two fine black lines, bordered Ijelow by a narrower 

 whitish strijic, which is again edged by a black line ; dusky 

 lines along the lateral scries of scales ; belly white ; upper lip 

 and loreal region with alternate black and white vertical bars. 



From snout to vent 185 millim. ; tail 245. 



Several specimens. 



5. Tupinambts teguixin^ L. 



6. Centropyx viridistriga, sp. n. 



Vertex concave, bordered by two sinuous ridges beginning 

 on the prefrontals and ending on the occipitals ; four supra- 

 oculars, first and fourth small, first separated from second by 

 a series of granules ; median temporal scales minute, granular ; 

 first pair of chin-chields separated from each other by granular 

 scales J gular scales granular, juxtaposed, the median larger, 

 hexagonal, and keeled ; collar strongly dentated, formed of 

 15 keeled scales. Dorsal scales rhomboidal, imbricate, 

 keeled, the keels not forming continuous lines, gradually 

 decreasing in size down the sides, which are covered with 

 minute granules ; the dorsal scales moderately large, as in 

 C. intermedius. Ventral shields in 10 longitudinal and 35 

 transverse series. 6 longitudinal series of enlarged keeled 

 brachial scales and 5 of antebrachials. 8 rows of large keeled 

 femoral scales, separated from the femoral pores by very 

 small scales; femoral pores 9 or 10. Prseanal region with 

 smooth scales and two large spines on each side (<?). Dark 

 olive above and on the sides ; a broad bright green vertebral 

 stripe, extending from the forehead to the base of the tail ; 

 three white lines along each side, the upper from the loreal 

 region to the base of the tail, passing on the lower eyelid and 

 above the ear, the next from the upper lip to the base of the 

 tail, passing under the ear, the third from axilla to groin ; a 

 black line runs along the upper labials ; limbs pale olive ; 

 tail green -, lower parts whitish, with a few small dark spots 

 on the throat. 



