DIVIStON-OPISTHOGLY PHA. 121 
Genus TRIMERORHINUS. 
Two Species in South Africa. 
KEY TORE SPECIES. 
Eye as long as its distance from the nostril... Tvimerorhinus rhombeatus. 
Eye shorter than its distance from the nostril Tvimerorhinus triteniatus. 
1. TRIMERORHINUS RHOMBEATUS. Rhombic or Spotted Schaapsteker. 
Bont Schaapsteker. 
Synonyms—Coluber rvhombeatus ; Psammophis longementallis. 
Colour—Colouration variable. Greyish, yellowish or pale olive-brown 
above, with brown black-edged markings which may form 
three or four longitudinal series of round or rhomboidal spots, 
or be partially or entirely confluent into three undulous or 
straight longitudinal bands; a yellow vertebral line sometimes 
present ; a dark band on each side of the head passing through 
the eye, widening behind and often joining its fellow on the 
occiput, sometimes broken up into spots; upper lip yellowish- 
white, uniform or with black spots ; tail with three dark stripes ; 
lower parts white, dotted or spotted with bluish grey or black. 
Average length—2z feet to 2 feet 6 inches. Attains a length of 3 feet. 
Distribution—Both provinces of Cape Colony ; Orange River Colony ; 
Transvaal; German South West Africa; Southern Rhodesia ; 
Angola. 
2. TRIMERORHINUS TRITHNIATUS. * Striped Schaapsteker; Streep or 
Gestreepte Schaapsteker. 
Synonym—LKhagerrhis triteniatus. 
Colour—Greyish or pale brown above, with two or three dark brown, 
black-edged bands originating on the head and extending to 
the end of the tail, the outer passing through the eye, the verte- 
bral sometimes rather indistinct or absent; a fine yellowish 
line sometimes divides the vertebral band; the sides below 
the bands white with a pale brown or red streak running along 
the outer row of scales ; upper lip and lower parts white. 
Average length—2 feet 6 inches. 
Distribution—Occurs all over South Africa; Common near Port 
Elizabeth ; North to the Equator. 
Genus RHAMPHIOPHIS. 
A single Species in South Africa. 
KEY tO vEh. Seb Guns: 
Snout short, pointed. Scales in 17 rows. 
Ventrals 155-168. Anal divided. 
Sub-caudals 31-40. Rostral large .. Rhamphiophis multimaculatus. 
I. RHAMPHIOPHIS MULTIMACULATUS. Damaraland Many-spotted Snake. 
Stippel Slang. 
Synonym—Coronella multimaculatus ; Dipsida multimaculata ; Rhager- 
rhis multimaculata. 
Colour—Pale buff or sandy grey above, with three or five series of 
regular brown spots, the vertebrals broader than long; a A- 
shaped brown marking on the occiput; an oblique brown 
streak behind the eye ; lower parts white. 
Average length—1 foot 6 inches to 2 feet. 
Distribution—Northern parts of Cape Colony ; Orange River Colony ; 
German South West Africa. 
