| OCR Text |
Show 538 MR. G. A. BOULENGER ON REPTILES AND [June 18, *i to our knowledge of this genus. I am now able to define 17 species, for the determination of which the following synopsis has been prepared :- Synopsis of the Species of Psammophis. I. Scales in 17 rows, exceptionally 19. A. Rostral a little broader than deep, well visible from above. 1. Anal entire; eight upper labials, fourth and fifth entering the eye. One praeocular; five lower labials in contact with the anterior chin-shields; ventrals 170-185; subcaudals 92-97 1- leithii, Gthr. T w o prseoculars ; four lower labials in contact with the anterior chin-shields; ventrals 157- 171; subcaudals 81-104 2. notostictus, Ptrs. 2. Anal divided. a. Five or six lower labials in contact with the anterior chin-shields ; usually nine upper labials, fifth and sixth entering the eye; praeocular in contact with the frontal; ventrals 162-197. Sixth upper labial shorter than the eye, which is more than half the length of the snout; subcaudals 93-149 3. lachrymans, Reuss. Sixth (exceptionally fifth) upper labial as long as the eye, which is more than half the length of the snout; subcaudals 130-158 4. punctulatus, D. & B. Sixth upper labial as long as the eye, which is half the length of the snout; subcaudals 132 5. triyrammus, Gthr. b. Pour lower labials in contact with the anterior chin-shields; eight or nine upper labials ; ventrals 151-168; subcaudals 100-108 6. subtmniatus, Ptrs. B. Rostral as deep as broad, well visible from above. 1. Nine upper labials, three entering the eye; ventrals 161-173; subcaudals 109-127... 7. bocagii, sp. n. (Angola). 2. Eight upper labials, exceptionally seven or nine, two entering the eye. a. Frontal, in the middle, narrower than the supraocular; ventrals 157-198; subcaudals 90-116. Praeocular narrowly in contact with or separated from the frontal, which is as long as or longer than its distance from the end of the SDOut 8. sibilans, L. Praeocular extensively in contact with the frontal; snout short, forehead strongly grooved 9. furcatus, Ptrs. Praeocular separated from the frontal, which is considerably shorter than its distance from the end of the snout 10. longifrons, Blgr. b. Frontal, in the middle, nearly as broad as the supraocular; praeocular not reaching the frontal. Snout nearly twice as long as the eye; ventrals 156-182; subcaudals 75-90 , 11. condanams, Merr. |
