182 



BULLETIN 84, UNITED STATES NATIONAL MUSEUM. 



Spderpes ruber st'icticeps. Baird. 

 RESERVE SERIES. 



Catalogue 

 number. 



Xo. of 

 spec. 



Locality. 



When 

 collected. 



From whom received. 



Jrature of spec- 

 imen. 



11475 



2 







Dr. W. L: Jones 













SpeJerpes rnhcr monianiis Baird. 



3839 



2 



3848 



2 



4715 





3870 





5948 





7031 





t834 



^i 



South Mountain 

 lisle. Pa. 



S;ileni, N. C 



Abbeville, S. C 



Tyree Springs, Teun 



Beaufort, JS' C 



Hillsborough, N. C . 

 Union County, Tenu 



Car- 



Rrof S. F. Baird 



J. T. Lint back 



Dr. J. B. Barratt 



Prof. K. Owen 



Wm. Stimpson 



M. A. Curtis 



J. N. B. Scarborough 



Alcoholic (type). 



Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 



AUTODAX Bouleuger. 



Aun. and Mag. Nat. Hist. 1887, p. 67. 



Anaidcs Baird, Iconogr. Eucycl., ii, 1849, p. 256; Girard, U. S. Expl. Exped., Eep., 

 p. 8; Cope, Proceed. Ac. Phila., 1869, p. 109; Slrauch, Salani., p. 74; 

 Bouienger, Cat. Batr. Grad. Brit. Mns., ed. ii, 1882, p. 52; iiom. preeoccupa- 

 tum. 



Tougue attached from glossoliyal to anterior margin on the median 

 line; considerably free. One premaxillary bone. Vomerine teeth ou a 

 ridge, which is continuous between the interior uares. Maxillary teeth* 

 conQned to the anterior part of the arch, compressed, knifeshajied, with 

 entire enamel ; mandibular teeth of similar form and large development, 

 few in number, and confined to the anterior half of the ramus. Toes 4-5. 



This curious genus is furnishetl with by far the most i^owerful den- 

 tition of any of existing salamanders, and resembles in this respect 

 the genera of the Coal Measures, Brachydectes, Hy lerpeton, and Hylono- 

 mus. In other points there is little difference between it and Plethodon. 

 One marked feature brings it nearer Desmognathus than anj' other 

 genus of Plethodontidfe. The exoccipito-prootics are each furnished 

 with a high longitudinal crest, over which the temporal muscle passes 

 from its origin on the atlas. It has, however, the usual origin from the 

 median line of the parietals, which scarcely exists in Desmognathus. 

 This line is marked in. A. lugubris by an elevated crest. The end of the 

 muzzle in that species bears evidence to a habit similar to tbat which 

 accompanies the singular structures of Desmognathus, viz, that of bur- 

 rowing or rooting among stones or other resisting objects. The derm is 

 similarly adherent to the bone, and the latter is exostosed and rugous. 

 The prefrontal bones are well developed. 



* Girard, I. c, describes the teeth as not fixed to the jaw, and capable " of a depres- 

 sion backwards." This is only true of saccessional teeth or teeth about to be shed; 

 the functional teeth are firmly anchylosed. 



