TIIK IJATRACIIIA <)l>' NORTH AMERICA. 



155 



CoNtiil i)li(ii' Ki. Head wido, widlli li's!#tliiui seven tiiiu-H to uroiii, not over twico to 

 aNillii; » hIi'diij; etintliiis roMti'ali.s; tail roiiiideil at tlio liaso, not linncil; liir^o; 

 unifonn |inr|>Ie-j;r,i.v aliovo 0. porphjiyilicii'f. 



i 



(JYRIXOl'IIILUS I'OUI'IIYUITICUS Given.* 

 (^ope, Troceetl., Ae. I'liila., \^t\0, p. lo,-j. 



Siiliniiamlra pnrphnritica, Green, Contr. Macliii. li.vc, i, l>*'27, ji. '.\, PI. 1, Cig. 2. 

 SdliiiiiiiiKlnt HHlmoiini (Storer), Ilollir., N. A. Ilerp., v, p. :i;{, I'l.H; De Kay, N. Y. 



Faun., Kept., p. TC. I'l. HI, li;,'. :«•. 

 Tiiloii itiiriilijirilhiiH, llolln-,, /. c, \t. H:t, I'l. "Jf^. 

 I'l^tiiilonilDii HalnioiiniH, .Journ. Ae. I'liila. ("il, I, p 



•JM7 



Hallow., I. 



IV, p 



:m7 



.liiihlijiliiiiKi snliiiDiiiiiin, Miiiii. i,V' l!ilir., |>. IK). 

 Sjii liviK's siilmniinis, SIraneli, Salam., p. h;!. 



S/irlr 



7" 



niiiininifti, 



(!ia\, Cat. Mafr. (irad. Miit. Mns., e.l. I, p. K! 



.s'/i(7( )-y»( s .' iiDyiilijiiiliiii, ill., ihid. 



.s'/)(7«i'/i(.'* tiitrphjiiiHrii'i, l>iiiilen;;er. Cat. liatr. (iiad. Mrit. Mils., ed. ii, IKSv', i>. (14. 



Tlii.s \\\H\ sjM'cit's of .siiliiiiiaiKli'r li;is an cloitfiatt'd and .sU'iidcr body, 

 iiiiK'li depressed III roil jiiioiif-, witli very little eoiistiietioii at the neek, 

 and (he tail lapeiinj;' very inqH'r('e|>til)ly Croin the body. TIh' skin is 

 siii<M)th and vory slippery, tnery where under tlu^ lenssho\vin}«' appproxi 

 mated shallow pits, hut no indication of glands. As nearly ns can be 

 asju'itained the ixires of the head are as in Spfh'rjus nihrr. 



The head is Hat, depressed, and rather wed}>«' shaped, the whole u|)per 

 part to the mn/./le bein<;^ nearly in one plane. The niM//.le is promi- 

 nently and bi'oadly lriiiu;ate, thon;;h a little roiindetl. The sides of tln^ 

 head are aliniptly oltliipic and also ipiite piano, the <'aiithns rostralis 

 lieiny; very slron;^ly marked as an an<;ular rid^jfc e.vl i liiiij forward 

 outside the nostrils to the edj;*^ of the jaw, where it lorins a sli^^ht 

 and obtuse proJe<'tioii. This rid;;e is further indicated by a lioht line 

 (always present) I'rom the anteriiu- anj^ies of the eye aloii;; its summit 

 to the niar.uin of the jaw; the two nearly parallel. The nostrils .send a 

 narrow I'm row from their outer extremity down this rid^e. 



The lower edoe of the upper jaw viewed from before is (loiicave, being 

 bounded on ea<di side by the rid^e Just mentioned. Tlu're is no well- 

 delined cirrus however. The side view of the lower ed.i!;e of the upper 

 jaw is also con<'ave. The upper Jaw pr»»jects larj;ely over the lower, 

 most so anteriorly. 



The eyes are lar};'eand prominent, distant anteriorly about «)ne and a 

 half len^-lhs of the orl>it ; the external nostrils one orbit len.iilh apart; 

 the inner less than this. The latter are very minute. Tiie touffuo is 

 circular, entirely (ree, pedicellate, and j^n'atly protractile. 



Theteelh are much as in Sprlcrpr.s riihrr; tho. parasphenoidal bauds 

 perhaps rather narrow. 



The body is rather vermiform, beinj;' of equal si/,(^ throu*;ho(it, uuich 

 depres.scd, with a furrow fiom nap«' to above anus, where the tail risi ; 

 into a sharp rid^f, which continues to I he tip. There are sixteen distinct 



l'late:tn, (ij^. t;; :f.t; :tl, li^rs. I-I; X., «};. (1; .«(», Ii;,'. :{; \>*, Ii 



i:t. 



t-t--. 



