414 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.53. 



Mississipjn. — Unknown locality, 2 ; Washington,!. 

 Louisiana. — Covington, 3 ; Clinton, 1 ; Mandeville, 1 . 

 No locality. — Eight. 



DESMOGNATHUS BRIMLEYORUM Stejneger. 



1895. Desmognathus brimleyorum Stejneger, Proc. U. S. Nat. Mus., vol. 17, p. 

 598. 



Type.—C&t. No. 22 1 57, U.S.N.M. Collected by B. L. Combs, in 1894. 



Type-locality. — Hot Springs, Arkansas. 



Distribution. — Known only from the type-locality and Little 

 Rock, Arkansas, Lower Austral Zone; altitude 500 to 1,000 feet. 



Diagnosis. — Similar to fusca, but larger and much slimmer, with a 

 row of light spots on sides as in auriculata, and belly mottled very 

 pale. Tail keeled above. Vomerine teeth lacking in mature males. 

 Transformed specimens: Total length 42-129 mm. , females, 134 mm. 

 males; head and body 27-71 mm., females, 82 mm., males. 



Description. — Vomerine teeth lacking in mature males. When 

 present they form two arched series, which contain 6 to 7 teeth 

 each. 



The parasphenoid series are quite variable. Long and narrow in 

 small specimens; in adults they are usually short and thick and 

 sometimes confluent anteriorly. 



The tail is like that oi fusca, but flatter and more IBnned above. 

 The tail is always a good deal shorter than the head and body. 



The head length is from 4 to 4^ in the length of head and body. 

 The head width is from 5 to 6 in the length of head and body. The 

 absence of the gular fold and the grooves of the face are noticeable 

 only in the type series and are due to faulty preservation. More 

 recent specimens show the gular fold and the facial grooves as well 

 as any of the other species. 



The mandibular dentition is as in fusca. The outline of the lower 

 jaw is not so flexuous in the male and the glandular prolongation 

 of the lower jaw is very weak. There is a noticeable difference in 

 size between the males and females. There is always a tubercle 

 canthus ocuU. The costal grooves are 14 and rarely 15. There are 

 4 to 4^ intercostal spaces between the appressed toes. 



This form has a narrow head, long slim body, short tail, and weak 

 legs. 



The color is much like that of auriculata on the dorsal surface. 

 The lateral series of light spots are, however, heavily outlined with 

 dark. The belly is mottled, but is paler than the beUy oi fusca. 

 i Bdbits. — Strecker (1908) gives the following on brimleyorum, 

 taken chiefly from the notes of B. L. Combs, who first collected them: 

 "Combs's first specimens were found under the edges of flat rocks 

 in the middle of a rather sluggish stream. Afterwards others were 



