701 A66:@:;,4(       7\ISPJH[PVUZ :JPLU[PﾄX\LZ K\ 4\Zt\T UH[PVUHS Kｻ/PZ[VPYL UH[\YLSSL 7HYPZ ^^^aVVZ`Z[LTHJVT Variations on a bauplan: description of a new Malagasy “mermaid skink” ^P[O ﾅPWWLYSPRL MVYLSPTIZ VUS` (Scincidae, Sirenoscincus Sakata & Hikida, 2003) Aurélien MIRALLES +P]PZPVU VM ,]VS\[PVUHY` )PVSVN` AVVSVNPJHS 0UZ[P[\[L ;LJOUPJHS <UP]LYZP[` VM )YH\UZJO^LPN 4LUKLSZZVOUZ[Y  + )YH\UZJO^LPN .LYTHU` *59:<49  *,-, *LU[YL KｻÉJVSVNPL MVUJ[PVUULSSL L[ t]VS\[P]L  YV\[L KL 4LUKL - 4VU[WLSSPLY JLKL_  -YHUJL TPYHSSLZZRPUR'NTHPSJVT Mirana ANJERINIAINA +tWHY[LTLU[ KL )PVSVNPL HUPTHSL <UP]LYZP[t Kｻ(U[HUHUHYP]V )7  (U[HUHUHYP]V  4HKHNHZJHY Christy A. HIPSLEY Johannes MÜLLER 4\ZL\T MY 5H[\YR\UKL 3LPIUPa0UZ[P[\[ MY ,]VS\[PVUZ \UK )PVKP]LYZP[p[ZMVYZJO\UN HU KLY /\TIVSK[<UP]LYZP[p[ a\ )LYSPU 0U]HSPKLUZ[Y  + )LYSPU .LYTHU` Frank GLAW AVVSVNPZJOL :[HH[ZZHTTS\UN 4UJOLU 4UJOOH\ZLUZ[Y  + 4UJOLU .LYTHU` Miguel VENCES +P]PZPVU VM ,]VS\[PVUHY` )PVSVN` AVVSVNPJHS 0UZ[P[\[L ;LJOUPJHS <UP]LYZP[` VM )YH\UZJO^LPN 4LUKLSZZVOUZ[Y  + )YH\UZJO^LPN .LYTHU` 4PYHSSLZ ( (UQLYPUPHPUH 4 /PWZSL` * ( 4SSLY 1 .SH^ -  =LUJLZ 4  ｷ =HYPH[PVUZ VU H IH\WSHU! KLZJYPW[PVU VM H UL^ 4HSHNHZ` ｸTLYTHPK ZRPURｹ ^P[O ﾅPWWLYSPRL MVYLSPTIZ VUS` :JPUJPKHL Sirenoscincus :HRH[H  /PRPKH  Zoosystema  !  O[[W! K_KVPVYNaUH ABSTRACT e “forelimbs only” bauplan, characterised by the combined presence of well-developed fingered forelimbs and the complete absence of hindlimbs, is rare among terrestrial tetrapods. It is restricted to three lineages of squamates with elongated worm-like bodies, the amphisbaenian genus Bipes Lacépède, 1788 and the scincid genera Sirenoscincus Sakata & Hikida, 2003 and Jarujinia Chan-ard, Makchai & Cota, 2011. In the present study, we describe a new species of Sirenoscincus from Marosely, Port Bergé region, northwest Madagascar, which