24 PBOCEEDINGS OF THE NATIONAL MUSEUM vol.78 



April 4, 1888, from the United States Fish Commission steamer 

 Albatross; and Nos. 58308-309, collected on January 25, 1906, from 

 the Hurter collection; Nos. 14946-55 and 19459-64 are coti/pes of 

 Tropidums IsTivrmcatus Cope. All these are topotypes of hivittafus. 



TROProURUS DELANONIS Baur 



1890. Tropidurus dela/nonis Baur, Biol. Centralbl., vol. 10, p. 478 (type locality, 

 Hood Island, Galapa.^os Archipelago). — Van Denbukgh and Slevin, 

 Proc. Calif. Acad. Sci., ser. 4, vol. 2, 1913, p. 159. 



1890. Tropidurxis hoodcnsis Baur, Biol. Centralbl., vol. 10, p. 478 (type locality, 

 Hood Island, Galapagos Archipelago). 



Gardners Island. Galapagos Archipelago. — Five specimens, Nos. 

 14926-30. 



Hood Island, Galapagos Archipelago. — Twenty-one specimens, 

 Nos. 15014-18 and 15020-25, taken on April T, 1888,^ cotypes of Trop- 

 idurus delanonis and T. hoodensis Baur, secured from the United 

 States Fish Commission steamer Albatross., Nos. 78401-408, collected 

 in July, 1929, by G. Pinchot, and Nos. 58614-15 taken June 25, 1906, 

 from the Hurter collection. 



As noted by Van Denburgh and Slevin (1913) Tropidurus 

 hoodensis is a substitute name for T. delanonis^ having appeared 

 as such in the reprint of the issue of the Biologische Centralblatt 

 cited above. Since there w.is no preoccupation, the oldest name, 

 delanonis.) has been applied to the species. From the nature of the 

 case, it is evident that the cotypes are the same for both " species." 



TROPmURUS DUNCANENSIS Baur 



1890. Tropidurus duiicanensis Baur, Biol. Centralbl., vol. 10, p. 479 (type 

 locality, Duncan Island, Galapagos Archipelago). — Van Denburgh and 

 Slevin, Proc. Calif. Acad. Sci., ser. 4, vol. 2, 1913, p. 147. 



Duncan Island, Galapagos Archipelago. — Twenty-two specimens, 

 Nos. 14941-44, taken April 13, 1888, cotypes, and 22109-24. topotypes, 

 both sets secured on April 2, 1891, by the United States Fish Commis- 

 sion steamer Albatross, and Nos. 56890-91. from the Hurter collec- 

 tion, taken in December, 1905. 



TROPmURUS HABELII (Steindachner) 



187(5. Tropid/urns paclficus hahelii Steindachner, Festschrift Zool.-Bot. Ges. 

 Wien, p. .314. pi. 2, fig. 2 (type locality. Indefatigable [?], and 

 Bindloe Islands, Galapagos Archipelago). 



Bindloe Island, Galapagos Archipelago. — Two specimens, Nos. 

 58484-85, from the Hurter collection, taken on September IT, 1906. 



