This is 

 ' known 



I iis lol- 



pus illlll 



ill wiint- 

 hicli iiit) 

 I'lii },M'n- 



1 wins': 



. S'lilinii^. 

 . . I'rolnis. 



II. Tlir 

 'rr.ini'.ni 



lie hypo- 

 wanting- 

 1 sinalltT 

 Is. 



iuo intiT- 



iptly lor- 



(ijiiinKsiil 



witli it 



uailralr, 



IH, Wii. 



tliat (lie 



)nni'(:tc'(l 



•nl witli 

 ii'ie arc 

 !" llic 

 ;h alike. 



loids, but 

 niucli 

 ildle line. 

 It is (bon- 

 ier lar;;er 

 nous c;ir- 

 r'.iilo the 

 an acute- 



Tin; IIA'I'I:.\('1IIA or NOI.'TII AMKUICA. 



NKCTUKUS l{alines(|ue 



23 



Do Uliiiuville'M.Ioiiriiiil I'liyMUjiii', i.xxxvm, Hl'.t, )i. 117 ; \Vii;;l. Nat. Syni. Aiii- 

 pliili., IHliK, p. 'ill); (!iay, Ciital. Mi it. Miis., cd, I, |). (1;1 ; Honlonjjcr, Catal. 

 Hal, (irail. Hiil. MMH.,tMl. ii, lHHt>, p. rt;i. 

 rhaiirrohiaiiiliiiM, imrt., I.riickait, Isis, 18il, p. 'J(»0. I'it/iii^f., Xciic. (Massif. Kept., 



p. (is, IS.'C. 

 MiiiohniiiiliiiH, Ilailan, Ami Lyi'. \. V., i, H]r>, p. 'J.'l ; Tsi^hiuli, Katr., p. '.(7 ; Dimi. 

 iV IJilir., IX, p. ls;t. 



External {(Ills persistent. I''in^ers and toes, I'oiir; voineropalatine 

 teeth in a single series. I'^yes exposed. 



This yenus is distriliuteil throii;;li()ut the eastern district of North 

 Ainerieii only, whore it is represented Uy two speeies. These are distin- 

 ;,niished ainonj; other characters by the ibllowiii}* : 



.Miiz/lf loiijfiT, more tlcprrssiMl ; liiimilii;i' Mlunlrr; Irclli, prcinaxillarii'M ll-ir>; vnm- 

 criiii's IvJ-lll; Itiowii, tiaikcr spotted ; lar;;i'i' X mariiliitiis, 



Mii//.le slioi'tcr, loss (li'iirossed ; liran(dii;r li)ii;;i'r; Icclli, prciiiax illarics ll-H ; viun 

 criiics ■•'-It: pale, iinspotti'd ; smaller .V. piiiictalii^. 



MXTIIRI'S MACI'LATl'.S RaC. 



Plates i-iii. 



S'lrliiniH mnciildliin, h'lijin., I. cr.; llolitr., N. A. Herp., V, p. 1Il,pl. ;!7; iSoiileiif^or, CatT 



|!;itr. <irad. lillt. Mils., ed. II. 1SH.», p. nl. 

 Tritdii lidirdlis, .Say, in Ldiij^'s Kspi-d. ItoeUy Mis., i, \t, ,"i. 

 I'liiiiiirohrnnrhim It Iraildrli/his, Leiud^ai't, I.e. 

 Miiiohritiicliiis lalintlis, Ilailaii, 1. c; Tseliiidi, natr.,p. 'J7 : llollir.,!. <'.,ii. ll'i, pi. ;!.-^; 



Dekay, N. V. rami., K'ept., \>. S7, pi. is, f. I,", ; Dum. A: |5il,r., p. ls:t ; Wied, Nova 



Aeta I.eop. -Carol xxxii. )). IIW, pi, 7, 1'. 1. 

 Mciiiihiiiiichns liliadachiliiK, Harlan, .lomii, Ac, Plila., i\', ji. li'JI; (iray.Ami, I'liilos., 



X, 1 >-,':., p. 'JIC. 

 Miitohniinhiis siiyi, (ii'ay, 1, e. 



yivtitrus mavitlimiiK, Gray, Cat. Hatr, Orad, Hiit. Miis.,ed, i, p. C>i\. 

 /')()/c((i iiittciihtliiK. Hariies, Aincr. .loiirn., xi, ji. y.")S. 

 ,]h'iioliraiii Jilts laripcilii, Ciray, in (Jrill'. ,\, i<.,ix, ji, l(l~. 

 I'littnn'ohrniirhiiH hirijuilii, l''it/.., 1. c. 

 .\trliinin latiriilin. \Vai;l,, 1, c. 

 iSinthiii liiiimalin Kiicelaiid I'rocecds, Hoslon Soc. Nat, Hist., vol, vi, p, L'rJ, l;*.")(i; p, 



'JlH (ls^»7). 

 Muiiolniincluis hiiiiiKilis KiKM'iaiid, I, c., p, 'J,~lt, ls,")7. 



In this si»ecies the body is only moderately elongate, measuring, with 

 the head, four and a li;iU' to live times the f-reatest width of the latter. 

 The body is deiiressed, though not so much .so as that of thi> known 

 sju'cies of Cryptobranchus. The section of the tail at the ba.se is a ver- 

 lical oval ; beyond this point it is more compressed, so that the distal 

 half is Hat and oai'-like, with a wide dermal border above Jiud below. 

 The length of the tail varies somewhat. It usually enters twi(!e into the 

 lenjith from its base to a point posterior to the eye, but .sometimes this 

 point is anterior to the eye, and even rarely as far as the end of the 

 muzzle. 



The head is a Hat oval, and the nuiz/.le is Hat, rather short, and some- 

 what truncate in outline. The eye is situated anterior to the middle of 

 the head and is quite small, itslont!,er diameter enteringr the interorbital 



