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54 BULLETIN ;!l, ITXITHI) STATKS NATIONAL MFSKUM. 



AMIJLVSroMA (d'ACI'M (inivciilioisl. 

 (I'liilcs UI-'Jl.) 



A»ihlii>'fnmno]mrn, I?nin1, .lonrn. Ac. Pliila. (v!) i, !-'"><•, p. '>-*.\: Orny, Cut. I?ii1r. (irn.1. 



I?rit. Mils., I'll. I, p. ;!/>, H.'iO; ILillowi'll, Jdihii.. I'iiili. .V'Mil., iv, :!r>l. 

 Salaiiiandiitopara, fJi'avoiih., UcluTd. Ziuil. Sy.st., p.liU, .•iml Dclic, ]>. T.'>, I'l. H': l»iiin. 



»t nilir., |>. <>(!. 

 Siildiiiniiilrd fiiHciitta, (Jivon, Jniirii. Ac. Pliila. I, 1-!1H, p. li.'.il: llollir. N. A. II. -rp,. \, 



1). 71. I'l. will ; ll.'lviiy, N. Y., F.in'i , IJ'pi-. !>■ *7. I''- '*. li;:- •"• 

 Arnhhisloiiiitl'iitridhim. Ddiii. ife 1511)1.. p. Ml, I'l. 101, ijm-, .">. 

 .Imhhisloma oimnim, Copf, I'roc Ac. I'liila. 1H17, l>. \r.\; Sf raiirli, S.ilain )).(;:!; lioii- 



loii-,'cr, Cat. Mitr. (Jrail. Miit. Miis 1. ii. issj. p. Id. 



Body swollen, tliick, c.vliiidritiiil, (U'prcs.scd: skin pcrrcctly sniontli, 

 altlioiijjh under a lens ev(M'y wiicrc sliowin^' niiniitc .simple pores or ])i(s 

 connected with the ylands, whieii lire seen everyw hei'e on the Wody and 

 tail, except, perhaps, on the lower part of sides, belly, and beneath the 

 liead ; on the tail, however, they are most developed on the npper hall". 

 There are no rejjiilar patches of more conspieiions pores on the liead 

 and parotoids, as seen in A. puuctatiim. 



Head rather broad, depressed, its {greatest width about •,' the length 

 from snout to jjnlar fold, and about f, the distance to insertion of hind 

 lefjs. Axial leiifjth of mouth half that to ji'ular fold, which is iiiter- 

 rnpted on the nape; a constriction behind the aiif-lc of the month, with 

 a lateral {jroove (or ridj^e) connecting;' the two as in ^1. piiiirtdfiiin. Ins- 

 tance from snout to {jnlar fold not (piite 3A times in that to insertion of 

 himl lefj. The eyes are moderate; the pupil (arcular. The jicneral r»'- 

 lation much as in .1. piinrtdtiim. 



r.ody nearly cylindrical, but decidedly depressed. No indication of 

 a dor.sal furrow. Eleven well marked costal furrow.s inciudiii;: flic in- 

 guinal. There are about four pelvic; furrow.s; those on the ba.se of the 

 tail aredistiiHit anteriorly, but "rradually become fainter. 



The tail is oval or subellii»tical in cross .section, thou<;h williont any 

 indication of a keel. It is nearly cylindrical at ba.se, lhou;;li sb<;|itly 

 (ioi.ipressed, becoinitifj more and more so to the pointed tip. It is 

 thi<!ker above than below, and measured from beliiixl llie anus is con 

 tained U times in rest of the leiif;th. The lateral {rroove on the tail is 

 less distinct than in A. punctatiiiH. 



Tjic digits are linear, depre.s.sed, fuit without any indication of web 

 or marfrin. The third or longest linger is one-third the distance from 

 its tip to the elbow ((contained three times). The lateral ones are ipiite 

 short. The fourth toe is longest, and contained L'^ times in the distance 

 from its tip to the knee; the .{, ."., L', I are suci-e.ssively shorter, or the 

 tilth and .second are about eipial. The distance between the outstretched 

 toes is contained about once and two-sevenths in the length from .snout 

 to behind anus. 



The tongue is thick and lleshy, as in .1. punclahim. though larger in 

 ])roportion, and tilling the mouth more. TIm' teeth aivinoiie transverse 





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