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Show 1899.] REPTILES OF THE MALAY PENINSULA AND SIAM. 635 46. GECKO MONARCHUS (Schleg.). Platydactylus monarchus, Cantor, p. 19. Gecko monarchus, Blgr. Cat. Liz. i. p. 187 ; S. Flower, P. Z. S. 1896, p. 868. Very common in certain houses in Singapore, and I have seen one specimen from the Province Wellesley. Colour (in life). Pale greyish brown, above with very dark brown spots arranged in a symmetrical pattern, below immaculate. Size. The two largest individuals I have measured were respectively :- Total length 194 mm. (snt. to vnt. 77; tail 117). „ .... 182mm. ( „ „ 84; „ 98). Hab. Ceylon, Malay Peninsula, Sumatra, Nias, Borneo, Celebes, Philippines, Mysol, Amboyna. 47. PTYCHOZOON HOMALOCEPHALUM (Crev.). Ptychozoon homalocephalum, Cantor, p. 20 ; Stol. J. A. S. B. 1870, p. 159; (part.) Blgr. Cat. Liz. i. p. 190 ; Blgr. Fauna Brit. Ind., Rept. p. 104 (fig. p. 105). The " Flying Gecko " bas been recorded from Penang by Cantor and Stoliczka ; I have also obtained one individual there myself at about 2200 feet elevation. Either this or the next species is found in Perak ; I have seen a specimen from Ipoh, in that State. Colour (in life). Cantor's description is very good, but where he writes " white " and " whitish " my Penang specimen was bright lemon-yellow and yellowish. Tongue and inside of mouth are lilac-grey. ' . , Size. The above mentioned specimen from Penang, a female, measured :- Total length 128 mm. (snout to vent 65 ; tail 63). Width of head (exclusive of dermal flaps) 14*5 mm. Extent across fully extended parachute 34 mm. Hab. Burma, Malay Peninsula, and some islands of the Archipelago. 48. PTYCHOZOON HORSFIELDI (Gray). Ptychozoon homalocephalum (part.), Blgr. Cat. Liz. i. p. 190. Ptychozoon horsfieldi, S. Flower, P. Z. S. 1896, p. 868. Horsfield's " Flying Gecko " has been recorded from Penang and Singapore. F. Mfiller (Verh. nat. Ges. Basel, 1892, p. 210) pointed out bow P. horsfieldi differs from P. homalocephalum ; these points may be summarized as follows :- 1. The tail has no large rounded flap at the extremity, but gets gradually narrower from the base to tbe tip. There are 18 lobes on each side, which are directed backwards instead of standing at right angles. |