152 On Two new South- American Batrachians. 



2. Pelvic bones not connected with p'^'c- 

 toral arch ; ventrals without spine, 

 with or 6 rays ; snout tubiforin ; 

 first vertebra very elongate, formed 

 by the fusion of several. 



Isolated dorsal spines ; body scaly 5. Aidoi^tomittidce. 



No dorsal spines ; body naked 6. Fistnlariidce. 



1j, Mouth toothless ; snout tubiforui ; two 



short dorsal fins, the first with a few 



spines ; ventral fins with 3 to 5 rays ; 



anterior vertebrae elongate. 



Body covered with bony shields and small 



rough scales ' 7. Cenfriscid(S. 



Body completely cuirassed by bony shields which 



"are fused with the endoskeleton 8. A^nphisiMcii. 



III. LoPHor>RANCHii. Prseopercitlum ab- 

 sent ; symplectic much elongate ; bran- 

 chial apparatus more or less reduced; 

 gill-lamellcB reduced in number and 

 enlarged, forming rounded lobes ; post- 

 temporal simple, immovably attached to 

 the skull; mouth toothless, at the end 

 of a tubiform snout ; body covered with 

 bony plates. 



Two dorsal tins ; ventral fins present, with 7 



rays ; gill-openings wide ; exoskeleton of 



large star-like plates 9. Solcnostomidxe. 



A single dorsal fin; no ventral fins; gill- 



opeuiugs very small; exoskeleton in the 



form of rings 10. Sijwjnathidce. 



IV. Hypostomides. Prseoperculum and 

 symplectic absent ; gills pectinated ; 

 mouth inferior, toothless ; body entirely 

 covered with bony plates ; ventral fin 



with 2 or 3 rays 11. Peaamlce. 



XIX. — Bescriplions of Two new South- American Apodal 

 Batrachians. By G. A. Boulenger, F.R.S. 



Ccecilia Thompsoni. 



Teeth very large in front, 6 or 7 in the upper jaw, 15 or 

 16 in the lower jaw, 14 vomero-palatines on eacli side; 8 

 small inner mandibular teeth. Snout rounded, very promi- 

 nent, as long as the distance between the eyes, which are 

 very indistinct ; tentacle on the lower surface of the snout, 

 nearer the edge of the mouth than the nostrih Body cylin- 

 drical, very elongate, its diameter 90 times in the total 

 length ; 212 circular folds, most of them narrowly interrupted 

 on the dorsal and ventral regions, the last 36 complete and 



