Tin; IJATKACIIIA OF NORTH AMKUICA. 



115 



tii:i. Tlioy iwe the only AiiiblyHtoiiiidiu witli cylimhii! tail. Tliey tliller 



iiH follows: 



I. Foldsol' till' toiij^iii' radiating IVoni a lon^jitiulimil furrow ; voiiifiiim Iccdi not ox- 

 tDiiiliii^ I'xiciiial til iiili riial iian-H; tail niuiKlol \n Hci'tion, 

 a t'linuia of iitii;;lii.sHal caftila^vi' liifiiril forwanls; 11HI//I0 very sliorl ; jaw8 

 i'i|iial; Ir;is .sliiirl, Mi'iiaiali'il finiii I'iU'li otliiT, wlii'ii aiipri'SMi'il, liy four iiitiT- 

 spacu's; lilai'Ui.sli, willi li;;lil ci'iiss-liaiiilsdii lu-ail, liotly.aiMl tail, /..aiiinilatng. 

 attConiiia, of iitiiu;liis.sal i'arlila;;o tiinn'il liai^kwanls; iiiii/./lo ('liiin;ati',iiro,icct- 

 iiijf lii'yiiiiil flii'i ; li';;s liiiij;i'r; si'|iarali'il, wlirii aiiprrsHi'il, by two iiiti'i'costal 

 spai'i's ; j^iayiNli-lirowii, with niiiiii'roiis palo tiausvrr.so lines, which form ii 

 If! iciiluti; pattern across the tail L. lii>turiiv. 



;>T?»" 







r 



LIX(iU.i:LArSUS ANNULATITS Copo.* 

 American Naturalist, l^•'7, p.8H. 

 AmbUjHiomn (umiihditm Cope, I'roc. Aiiicr. I'hilos. Sue, H"^7, p. "('iri. 



TIlis specii's ivsciiibU'S the ('liondrotii.s mii-rastoinns ratliei' than tlio 

 C. (iii(jiil((lu.s or this L. Irpdiriis, llowcvoi', it appi'oachcs Iho histtiuiiu'd 

 spt'cit's ill the form and leii^'th of its tail, and exceeds that and all the 

 other si»ecies of the lUiiiily in the lenyth of that part of the body. 



'llie muzzle is very shorl, and the head is not distinoiiished from the 

 neek. The leos are short, and when apinessed to tlu^ sides are sepa- 

 rated by a space of three and parts of two other intercostal spaces, 

 e(pial to four spaces. The tail is in section cylindricat base, and widely 

 oval to near the extriMiiity, where it is more narrowly oval. It is not an- 

 {filiate, and has no dermal marj;in on the middle line above or below. Its 

 lenylh exceeds that of the head and body by the lenoth of the anterior 

 foot, iind it may have been loiicctii", sis the extremity is injured. 



The head Is short, and the width enters the lenoth to the groin six 

 and a (luarter times. 1 he front i.> :oiivex to the upper lip or profile, 

 and transversely between the orbits. The parietal region is very con- 

 vex transversely. The width between the canthi ocnlorum behind ex- 

 ceeds the length from the same point to the end of the muzzle. The nos- 

 trils present anteriorly, aud they tiro not <iuite so close together as in the 



4 ' 3 ■ " - ■ 5 • '• 2 e 7 



Flir. Zi. LiiKjiiiilajiiiiK iiuiiiihitiix. No. 115C4; imtiinil .ii/o, I'xrcpt I'M^. 5. 



Jj. lepturKN, as the distance between them measures two thirds the width 

 between the eyelids. The vomerine teeth form two transverse fasciculi, 

 of .several rows of teeth eaeli, between the t^hoana', (ionvex forwards, 

 and .sei)arat«'d on the middle line by a very .short interval. 



The skin is perfectly smooth. There is ii postgnlar fold, and the 

 sides are cros.sed by thirteen folds, with space enough at the axilla for 



