' 



74 



MONOGKAPIIS OF MOHTU AMERICAN UODENTIA. 



tawniest specimen we liave ever seen Ironi Washington Territory, anil in this 

 respect exactly like some Massaclnisetts exam|»les of leucopus. Color, then, 

 atl'ordiiig no tiafa, and the matter of the chcek-pouclies being already settled, 

 we are driven back upon ineasnrements alone to substantiate "ftoylii"; and 

 we conclude our argument witli the following table, comment upon which is 

 unnecessary : — 



Tablk XVI.— .Vui<Hrrmiiii(«it^yire«j>«;iM«N«»/y!i'ii "ajjectM" («M»IJi<l) o/ IIkspkromyh. 



Nunibvr. 



•2778 



i:u:i 

 mil 



SiipiHNiwl npt'cies. 



Typical of hnatptts.,... 



Typo of " boylii" 



Typical of " iiiyoiil™". 

 Typical of " iiuiiterii» " . 

 Type of "gracilis" 



Trunk. 



:i. 4.1 

 ;i. afi • 

 3. .so 

 a. 00 

 »t 



Tail. 



:i. .lo 

 :i.uo 



3.90 

 3.40 

 3.00 



Sole. 



0.83 

 0.«i 

 0.»> 

 0.82 

 0.87 



Gar. 



0.01 

 0,») 

 O.Ot 

 0.U4 



" I'rinteil in SI. N. A. ".La.")" by t.vpngrapliical error. — A le'coiul (i|>eeinien of •' boylii " (No. &78)iihow8 

 longer tail, feet, nnil care:— trnnk, M.Oi' ; tail, 4.U8 ; miIc, 0.il.'> ; ear. 0.7.'i; nhilo a tliird ^No. HIO) Iiim tlie 

 tail conviilerably Hliorter than tlii' trunk (trunk, 4.00 ; tail, 3,t>.1). rrofewor Uainl remarks of this No. 

 810, that iHiNNibly it is "(ranilieli", anil prints it also iiniler "gunilieli", witli tbo remark, "possibly II. 

 boylii". It is, in fact, Just as much like one as like tbe utber. 



I I'robably abunt 3.r>0, but iinpossiblu to iloterinine now, owing tu the stretched and rnt-eat«u state 

 of the specimen. 



A scries of alcoholic specimens from Capo Saint Lucas, the first exam- 

 ined, we believe, from tiiis locality, ofl'crs some interesting features. Although 

 it is not easy to judge of color in their present condition, they appear 

 to be light-colored, with the dorsal stripe of the tail very narrow, and 

 in this and other resi)ects most of the series are undoubtedly referable to 

 "gambeli". A part of the series, however, shows an extraordinary length of 

 the tail — in this respect surpassing the most marked examples of "boylii" or 

 "myoides". In one specimen, the tail is nearly an inch and a iiulf longer 

 than the head, and in this one, as well as the rest of those with the tai' 

 decidedly longer than the body, this meml)cr is almost as naked as in a Mus, 

 and unicolor, of a dull-grayish hue. In all these, the dark color of the leg 

 extends on the base of tiie metatarsus — a feature shown distinctly even in a 

 suckling specimen. Altliough in their present state these specimens tlo not 

 show any apprecial>le diirerence in the body-colors from the "gambeli" com- 

 posing most of tlie series, we have little hesitation in referring them to the 

 //. aztecus. Tiie lengtli of tail of this species, it will be seen beyond, has 

 not been known ; for all three of Dc Saussure's types had lost the tij) of the 

 tail. Our type of azlecus, received from De Saussure, agrees precisely with 



1r ' ■ C: 



