138 Bangs — New Mammah from Indian Territory. 



Size.— The type: total length, 260; tail vertebne, 100; hind foot, 37. 

 Size of No. 5605, (^ adult from Noel, Mo. : total length, 255 ; tail vertebrfe, 

 105; hind foot, 36.5. 



General remarks. — The two specimens of this fine chipmunk that Mr. 

 Surber got at Stihvell were shot at the edge of an old field well up on a 

 hillside. The specimen from Noel, Mo., was taken in a similar place. 



llimias stridius venustus is by far the handsomest of the striatus series 

 and is easily distinguished from any of the other subspecies. Its large size 

 and big hind foot place it nearest to grlsens, but its bright, rich coloration 

 will at once separate it from that form. With the pale yellow h/steri of 

 the northeast it needs no comparison, and from the small, dull, dark- 

 colored true striatus of the southeast it can always be told by its larger 

 size, bigger hind foot, longer tail, and much brighter coloration. 



Scalops texanus aereus subsp. nov. 



7'v/pc from Stihvell, I. T. No. 5475, 9 old adult, collection of E. A. 

 and O. Bangs. Collected by Thaddeus Surber, August 13, 1896. One 

 specimen from Stihvell, I. T. 



General cJiaraviers.—'^^ize larger than typical S. ie.vanus ; hind foot larger ; 

 colors darker, without orange markings about nose and chest ; skull 

 slightly different. 



Color. — Rich coppery chestnut all over, without golden or orange suf- 

 fusions ; slightly duller below than above, and grayer on chin and throat. 



Cranial characters. — The skull of 8. icrauus eereus as compared with that 

 of true texanus is larger and of a slightly different sliape. The skull of 

 texanus has a short rostrum and is much bulged between the orbits. The 

 skull of eercus has a longer rostrum and does not present the bulged ap- 

 pearance between the orbits. Size of type skull: basilar length, 28.4; 

 occipitonasal length, 33.4; zygomatic breadth, 15.2; greatest length of 

 single half of mandible, 21.8. 



Size. — The type: total length, 154; tail vertebraj, 24; hind foot, 19. 



General remarks. — Mr. Surber caught the type specimen of Scalops Ie.vanus 

 ' iereus while it was engaged in tunneling on a black-jack ridge at Stihvell. 



Dr. J. A. Allen* gives the following measurements for Scalops te.vanus 

 from Rockport, Texas: Average of twelve adult males, total length, 141 ; 

 tail vertebrae, 25 ; hind foot, 17.8 ; and of eight adult females, total length, 

 137; tail vertebrse, 23 ; hind foot, 16.5. The largest male measured : total 

 length, 147; tail vertebree, 27; hind foot, 19; and the largest female: 

 total lengtli, 146; tail vertebrae, 25.5 ; hind foot, 18. Although Dr. Allen 

 gives no cranial characters for the species, the two skulls of texrmus that I 

 have examined can be easily told from either the skulls of typical Scalops 

 aqnatlcus or S. aqu<tticns aryentatus, apart from the smaller size, by the 

 much shorter rostrum and bulging interorbital region. The skull of lereus 

 is much more like that of aquaticus. 



Mr. Surber took a fine series of Scalops aquaticus argeyitatus at Stotes- 

 bury, Vernon County, Mo., which brings the range of that subspecies 

 verv near the range of >S. texanus xreus. JEreus, however, does not ap- 

 proach argentatus in any way, its affinities lying wholly with texanus. 



*Bull. Am. Mus. Nat. Hist., vol. vi, 1894, p. 186. 



