ZOOLOGY. 621 



ferred to this family, but one {Amphodus Wurcheri) may require to be 

 diflt'erentiated from it. 



The Discoglossids difier so much from the other Arcifers that the exi- 

 gencies of economy in diagnosis, as well as scientific taxonomy, appear 

 to demand its isolation in a peculiar superfamily, contrasting with 

 another containing all the other representatives of the arciferous sec- 

 tion, viz: 



Bufouoidea. — Arciferous Phaneroglossates without ribs, and with 

 their tadpoles provided with a spiraculum situated on the left side. 



Discoglossoidea. — Arciferous Phaneroglossates with short ribs and 

 their tadpoles distinguished by a "spiraculum situated mesially on the 

 thoracic region." 



Suborder II. Aglossa. — Salients with the Eustachian tubes united 

 into a single ostium pharyngium and without a tongue. 



XIII (=1). Dactylethrids. — Aglossates with maxillary teeth (with di- 

 lated sacral diapophyses, and with " coracoids and precoracoids sub- 

 equal, strongly divergent, connected by a double, not overlapping, car- 

 tilage"). 



This family (which should by rights be called Xenopodids) is com- 

 posed by three species of Xenopus, found in Tropical Africa. 



XTV {=!). Pipids. — Aglossates without teeth (with dilated sacral dia- 

 pophyses, and with "coracoids and precoracoids strongly divergent, 

 former much dilated, connected by a broad, double, not overlapping, 

 cartilage"). 



The Surinam Toad, Pipa americana, is the only known species of this 

 family. 



KEPTIXES. 



General. 



Cope (E. D.). Reptiles of the American Eocene. Amor. Naturalist, v. 16, pp. 979-993. 

 Hoffman (O.K.). Eeptilia. (Bronn's Klassen und Ordnungen Thierreiclis. ) 35. 

 Lief. Leipzig und Heidelberg, 1882. (8vo. M. 1. 50.) 



Special orders. 



(Crocodilians.) 



Chaffanjon(J.). Observations sur 1' Alligator mississippiensis. Ann. Soc. Linn. Lyon, 



t. 28. (8vo., 16 pp., 1 pi.) 

 Van Beneden (Edouard). Recherclies sur I'oreille moyenne des Crocodiliens, et ses 



communications multiples avec le pharynx. Avec 3 pi. Archiv. de Biolog.,t. 3, 



pp. 497-560. 



{Lacertilians.) 



Fischer (J. G.). Anatomische Notizen iiber Heloderma horridum Wiegm. Mit 1 Taf. 



Verhandl. Ver. f. naturw. Unterhalt. Hamburg, 5. Bd. 

 Fischer (Joh. von). Das Chamiileon (Chamaeleo vulgaris), sein Fang und Versandt 



seine Haltung und seine Fortpiianzung in der Gefangenschaft. Zoolog. Garten, 



23. Jahrg., pp. 4-13, 39-48, etc. 



