470 



BULLETIN 58, UNITED STATES NATIONAL MUSEUM. 



T. jerdonii. It is at least equally closely allied to T. elegans on the 

 islands of the southern Riu Kiu group, while T. Jiavoviridis from the 

 Okinawa-Oshima group is slightly more differentiated. 



List of specimens of Trimeresurus mucrosqvaviaius. 



a Total length, 932 mm. 

 b Description, p. 468. 



c Fischer, p. 18. 



d Boulenger, Cat. Ill, p. 5.52. 



e Boulenger, MS. 



TRIMERESURUS ELEGANS " (Gray). 



1849. Craspedocephalus elegans Gray, Cat. Su. Brit. Mus., p. 7 (type-loc•alit^^ 

 "west coast of (North?) America?"; types, Brit. Mus., Nos. 47. 3. 4. 62 

 and 64; Sir E. Belcher, collector) (not Trimesurus elegans Gray, 185.3). 



1895. Trimeresurus luteus Boettger, Zool. Anz., XYIH, July 8, 1895, p. 269 

 (type-locality, " Miyakoshima, " Riu Kius; type in Mus. Senckenberg. ; 

 Schmacker, collector); Offenbach. Ver. Naturk. 33-36 Ber., 1895, p. Ill 

 ("Miyakoshima.") — Lachesis luteus Boulenger, Cat. Sn. Brit. Mus., Ill, 

 1896, p. 553. — Lachesis lutea Boettger, Kat. Schl. Mus. Senckenberg., 

 1898, p. 139 ("Miyakoshima.") 



1906. Lachesis mucrosquamatus Wall, Proc. Zool. Soc. Ivondnn, 1905, II, p. 

 516 (Miyako; Iriomote) (not of Cantor). 



The types of Craspedocephalus elegans in British Museum are enu- 

 merated under Lachesis mucrosquamatus by Boulenger in his cata- 

 logue, but their lower number of ventrals precludes their annexation 

 to that species. Boulenger does not seem to have know^n T. luteus 

 from autopsy, and in his key to the species on page 532 he fails to 

 point out any difference between the two species. The chief difference 

 shown in his descriptions (pp. 552 and 553) consists in the 'Hemporal 

 scales smooth" in T. mucrosquamatus and "temjDoral scales keeled" 

 in T. luteus, but this character is not reliable. 



o Signifying elegant. 



