236 DR. R, W. SHT3FELDT ON [-^P'*' 1> 



with a fair idea of tbe reptile. A drawing is also given of 



the superior aspect of the head.) 

 (7) 1836. DuMERiL (A. M, C.) and Bibron (G). — Erpetologie 



Generale ou Histoire Naturelle complete des Reptiles. T. 



iii. pp. 499-.T01. — (In this justly celebrated work a brief 



description of the Heloderma is given, which adds nothing to 



previous descriptions of other authors.) 

 (S) 1837. Gray (J. E.).— Proceedings of the Zoological Society of 



London. P. 132. — (Places the Helodennutidce with the 



Leptoglossce, a subdivision of the Saurians as proposed by 



Wiegmann.) 



(9) 1838. Bonaparte (Charles Lucien). — " Synopsis Vertebrat- 



oruui Systematis. " Nuovi Annali delle Scienze Naturali. 

 Anno i.Tomo ii. Bologna, pp. 105-133. — (On page 12-1, family 

 13 is represented by the Helodermatidce, and subfamily 20 

 by the Helodermatina, the latter being the only sul)family 

 ranged under the former. The cacography in either case is 

 retained. The year, although given as above both on back 

 of volume and the titlepage, should probably be 1839, 

 unless Tomo iii. was published in 1839. Compare same 

 work below.) 



(10) 1840. Idem. — •' Prodromus Systematis Herpetologise." Nuovi 



Annali delle Scienze Naturali. Anno ii. Tomoiv. Bologua, 

 pp. 90-101. — (Here the Heloderms are placed with the 

 Leptoglossi of this author, between the Varanidce and the 

 AmeividcB (Tribus 2) ; and vipon p. 95 the following cha- 

 racterization of them is given ; "Familia 13. Helodermulidce. 

 Lingua. . . . laminae supraorbitales cutaneae : oculi i)al])e- 

 brati ; aures conspicure : membrana tympani superficialis ; 

 caput tuberculato-squamosum, depressum : corpus elong- 

 atum. 



" Subfamiha 21. Helodermatina . Denies adnati : cutis 

 sulculis exarata : squamae tuberculiformes osseae : pori fe- 

 morales nulli." 



(11) 1840. Idem. — " Systeina Vertebratorum." Trans. Linn. Soc. 



London; vol. 18. pp. 247-305. Separate, 1. p. 1. 58pp. 

 Helodermatidae and Helodermatina, p. 294 ; Sep. 37.— 

 (Li the last place there occurs the same characterization of 

 the HelodermatidiE and the Helodermatina as is quoted above 

 from the Prodromus, with the exception that the words 

 " Famiha" and " Subfamilia" were not introduced, and owing 

 to a certain re-arrangement the subfamily is 20 instead of 21 

 as above given.) 



(12) 1845. Gray (J. E.). — Catalogue of the Specimens of Lizards 



in the Collection of the British Museum. P. \4.— {Helo- 

 derma horridum is here alluded to under the name of "The 

 Caltetepon," and isolated as the representative of the family 

 " Caltetepons " (Helodermidce).) 



(13) 1853. Troschel (F. H.). — Archiv fiir Naturgeschichte ; t. i. 



p. 294, — (Taf. xiii. and xiv. present us with very good figures, 



