On the Anatomy and Phylogenetic Position of Polypterus. 



423 



V. Ammon, Permische Amphibien der Rheinpfalz, München 1889. 



Ateks , Morphology of the Carotids , in : Bull. Mus. Comp. Zool. Har- 

 vard, Vol. 17, 1889. 



Baur, Squamosum und Supratemporale, in : Anat. Anz. 1886. 



Cattie, in: Arch, de Biologie, T. 3, 1882. 



Fraas, Eberhard , Die Labyrinthodonten der schwäbischen Trias , in : 

 Palaeontographica, Zittel, Vol. 36, Stuttgart 1890. 



Garman, Chlamydoselachus anguineus, in: Bull. Mus. Comp. Zool. Har- 

 vard, Vol. 12, 1, 1885. 



VON Plessen und Rabinovicz, Kopfnerven von Salamandra mac, Mün- 

 chen 1891. 



Wilder, H. H., Contrib. to Anat. of Siren lac, in : Zool. Jahrb., Vol. 4, 

 Abtheil. f. Anat. 1891. 



— — 2nd paper in the same. 



Zittel, Handbuch der Paläontologie, Vol. 3, 1 and 2, München 1890. 

 For general information Wiedersheim's Textbooks and W. Mat- 



CHETT Jackson's Forms of Animal Life have been consulted. 



Lettering of Figures. 



Amp. Ampulla. 

 Anast. Anastomosis. 

 Ant. sub. Anterior suborbital. 

 Aug. Angulare. 

 Art. Articulare. 



A. s. c. Anterior semicircular canal. 

 Aud. Auditory oi'gan. 

 JB. m. Branchiomandibularis or Ge- 

 niohyoid. 

 Br. Branchial vessel. 

 Bs. OCC. Basioccipital. 

 C. eth. Canalis ethmoidalis. 

 C.p. Canalis preorbitalis. 

 C. aor. Canal for precardiac Aorta. 

 Ce. hr. Ceratobranchial. 

 Ce. hy. Ceratohyoid. 



C. tr. Cornua trabeculae. 

 Co. a. Conus arteriosus. 

 Comm. Commissure. 

 Cor. Coracoid. 



Cor. arc. Coracoarcuales. 

 Cr. occ. Crista occipitalis. 

 Cr.sp. Craniospinal or opisthotic 

 process. 



D. A. Dorsal aorta. 

 D. cl. Dermal clavicle. 

 D. eth. Dermethmoid. 



Dep. Depressor muscle. 



Ect. eth. Ectethmoid bones. 



Ect. pty. Ectopterygoid. 



Ent. pty. Entopterygoid. 



Epiph. Epiphysis. 



Eth. pal. lig. Ethmopalatineligament. 



Ex. occ. Exoccipital. 



Fr. Frontal. 



Gass. Gasserian ganglion. 



Gang. Ganglion. 



H. M. Hyomandibular. 



H. SC. Horizontal semicircular canal. 



Hum. Humeral cartilage. 



Hy. Hyoidean artery. 



Hyp. Hypophysis. 



Imx. a. Intermaxillaris anterior. 



Imx. p. Intermaxillaris posterior. 



/. arc. V. Interarcuales ventrales. 



Inf. hr'. Infrapharyngobranchial. 



I. tr. Intertrabecula or rostrum. 



Int. hr. Intranasal branch. 



Jch. Jacobson's organ. 



Jug. Jugular. 



Jug.pl. Jugular plate. 



Lh. Labial. 



Lev. Levator muscle. 



Lev. arc. Levatores arcuum. 



