On the Galajmgos Lizards of the Genus Tropidurus. 501 



drooping, comparatively large ; tongue, ocelli, and maxillary 

 palpi invisible ; forehead with a projecting fringe of hairy 

 scales ; antennae broken ; hind tibiae with a broad expanding 

 tuft of hairs in the middle. 



Type Isojjteryx discoloraJiSy Wlk. xxxiv. p. 1315. 



[To be continued."] 



LVIII. — On the Galapagos Lizards of the Genus Tropidunis. 

 By G. A, BOULENGEK. 



I HAVE lately reexamined the specimens of Trojjidurus 

 brought home by Darwin and Commander Cookson, with the 

 view of testing the value of the supposed new species from 

 the Galapagos Islands recently described by Cope * and by 

 Baurf. The specimens known from the Galapagos Islands 

 were referred by Steindachner and myself to two species, T. 

 Grayi^ Bell, and T. pacijicus^ Stdr., the form with two light 

 dorsal stripes described by Peters in 1871, from Chatham 

 Island, as Craniojjeltis hivittata being regarded as a variety 

 of T. Grayi. It is this very form which has been redescribed, 

 from the same island, by Cope under the name of Tropi- 

 durus lenmiscatus, sp. n., without any reference Avhatever to 

 Peters's description. What is almost worse is Baur's bold 

 statement, " Ueber Tropidurus {Cram'opeltis) livittatas (sic), 

 Peters, dessen Fundort unbekannt ist|, kann ich kein Urteil 

 abgeben." Is it too much to expect from herpetologists 

 in America that they will look up the literature, and 

 avoid quoting, as if seen by them, works to which tliey 

 have not referred, as is evidently the case witli Dr. Baur? 

 I should also like to know where the latter gentleman 

 has found T. pacificus quoted by me from Albemarle. 

 I do not believe in most of the characters set forward 

 by Baur to distinguish different species in tlie different 

 islands ; his statements are to a groat extent contradicted by 

 the typical specimens themselves, as when he says that the 

 striped form, from Chatham Island, has 55-61 scales round 

 the middle of the body, and that the specimens with 65 scales 



* Proc. U. S. Nat. Mus. xii. p. 145 (1889). 



t Biol. Centralbl. x. p. 475 (1800). 



X Peters states in his original description, " Das einzige niir vorlie- 

 gende Exemplar .... stammt von der Galapagosinsel Chatham " (MB. 

 lierl. Ac. 1871, p. 646.) 



Ann. <£• May. N. Hist. Ser. 6. Vol. vii. 34 



