BEB 



IIIK ItATKACIIlA <»!' NolM'll AMKUICA. 



95 



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AMUI.YSroMA MACI.'ODACrVH'M Uiiinl. 



(l'la(<"jr., li<;. (i.) 



liiiiid, .loiiin. Ac. riiilii. (•.•) I, i>. 'Mi, and U. S. Kxi)!. KxiH'<Iili(>ii, xii, pail 'i, 

 ri. ;!1, li'-. :i; ('"I"', I'l'"'- Ac riiila., isr.r, p. I'.W; Stram-li, Salaiii., 

 p. or.; I5oiiliMij;i'r, Cat. 15atr. (ira:l. Hiit. Mas., cd. ii, \^^>, \>. >■<. 



This species is the shMidei'est ol' all our spceies of Ainblifstoina ; in 

 this respe'it, as well as leiijith or(lif>its, ex('eeirni,ii' the t,vi)ical A.jcffcr- 

 noniitnuin, but I'eseiiihliii};' the A.J. plutinciim. 



The head is rather larye, <lepiesse(l, and eloiinated, with a iiiodeiate 

 eoiistrictioii at the neck. Tiie eyes are proniinent, and distant less than 

 two leiiju'ths of the orbit. The outer anil inner nostrils are each about 

 oint orbit distant. The width of the head is about three-cpuirters the 

 distance to j^nlar fold. 



The lonj;ne is oval and longitudinal. The palatine teeth are in three 

 or four patches, the central largest, occasionally sei)arated by an in- 

 terval less than half the diameter of the inner nostrils. Together they 

 form a line slightly angular anteriorly where they reach to about op- 

 l)osite the (!enter of the inner nostrils; laterally they pass a little the 

 outer margin of thc^ inner nostrils. 



The body is cylindrical, depressed, with twelve costal furrows. The 

 tail is long and is com[U'essi'd for its distal half. The digits are longer 

 than in any other spec", s of tlie genus, the interior being well developed 

 on both ext rem ties. On the forefoot it eipmls the extern id toe in length, 

 while (II the hind limb it is a little shorter than the lifth. The pha- 

 langes are : In front, 2, li, .{, 2; behind, 2, 2, 3, 4, 2. 



The cnh)r in alcohol is leaden brown, with a well-defined broad dorsal 

 stripe of grayish-brown, which, involving the whole upper surface of 

 the head and neck, contracts on the nape, swelling again on the back, 

 with an average, breadth of the outer orbital space. This stripe extends 

 to the end of the tail. On each side of this dorsal strip(^ is a sulfusion 

 of dark brown, which gradually i>ales through the color of the sides 

 onto the belly. There are also a few s[»ots of the satne in the dorsal 

 stripe. There are a few grayish-white dots scattered along the sides, 

 and perhajis on the limbs. 



Two specimens (Kt54) from I'ugi^t Sound agree in Ibrm with the 

 preceding speitiiiu'ii, the two central patches of i)aliitine teeth perhaps 

 a little more, angularly arranged. Instead of the grayish dorsal stripe, 

 however, there is a brownishicd one, and the sidi^s areof a darker and 

 inon' (!ontinnoiis brown. No. 1711 has a similar eharaitter of palatines, 

 but a coloration mort^dvc the type. The palatines, in fact, extend a 

 little in front of the anteriiu' border of the inner nostrils. 



l'ri)jii>rlii)iinl iliiiitiitiiniN, 



Spec. No. till',', (tvpf). 

 Itoa.l : 



l.rii!;tli (if i.api' I if 1111)11 111 lt> ils width t wo-tliinlH. 



Width tu ('islaiiio IViMii siiDiil to sjjiilar Cithl ahmii t hi'('f-(|iiartfrM, 



W'idlh Id dislaiKM' iVoih mimhi Io •^^niin ', (imcM. 



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