NO. 1174. HA W All AN LAND REPTILES— STEJNEGER. 799 



HEMIPHYLLODACTYLUS' Bleeker. 



(Fig. 9.) 



1860. — Hemiphifllodactylua Bleekkk, Natumk. Ti.jds. Nederl. Ind., XX, p. — (type, 



H. typits). 

 1872. — Spaihodactylua Gunthku, I'roc. Zool. Soc Loml., jt. 591 (typo, S. muH- 



latua^H. tijirm) (not of Pictet, 1858). 

 1885. — Spathoscalabotes Houlengek, Cat. Liz. Hrit. Mus., I, p. 156 (substitute 



name). 



Compressed distal phalanx of digits free, rising angularly from witliin 

 the edge of the dilated i^ortion ; subdigital lamella; confined to the distal 

 end of the dilatation and divided by a median groove; inner digits 

 rudimentary, without distal free phalanges, (dawle.ss; tail narrow, 

 cylindric, without median transverse plates underneath; no enlarged 

 chin-shields. 



Not having any si)ecimen of Bleeker's type of this species I have 

 had to rely on (riinther's and Boulenger's descriptions and figures. 

 The only difi'ereuces which I can make out from these seem to be the 

 greater slenderness of the digits at the base and the 

 greater length of the raised distal phalanx, differences 

 of degree which would hardly justify a generic sepa- 

 ration. Giinther's figures of the underside of the 

 digits'* seem to have a few granules separating the 

 posterior lamellai from each other and also to be lack- ' g 



ing lamellic under the inner digits, but the ditterences, no. o.-UNUEnsiDE 

 if they really exist, are immaterial. of-hinofLepiuo. 



BovLleugeT^a Lepidodactylus crop Kscularis and Jj. cei/- bris. (Enlaeqed.) 

 lonensis belong apparently to this genus, and i)()ssibly 

 also his L. aurantiacus. The structure of their toes differs very materi- 

 ally, liowever, from that of Lepidodactylus^ as typified by L. Jmjuhris, 

 being in fact more nearly related to Pcropu.s and Oehyra in this respect. 

 In Lepidodactylus the compressed distal phalanx adheres to the dilata- 

 tion underneath it, only its extreme end extending beyond the edge of 

 the pad without being raised or bent angularly to its plane. In the 

 species included by me in Hemiphyllodactylus, on the other hand, although 

 the terminal phalanges are rather short in all, except the typical species, 

 the compressed joint rises angularly out of the surface of tlie dilatation, 

 not from the edge, but from within it, exactly as in J/emidactylus, (iehyra, 

 and Feropus. In the absence of chin-shields and enlarged transverse 

 subcaudal plates they show some resemblance to Lepidodactylus, but 

 that is offset by the different shape of the tail and the greater reduction 

 of the inner digits. The true relations, however, lie with Feroptcs, I 

 have no doubt. 



The species here included under Bleeker's generic name seem to form 



'From'?///;, half; (pvXXov, leaf; SaxTvAoi, linger. 

 2 Proc. Zool. Soc, 1872, p. 594. 



