138 Bangs New Mammals from Indian Terr it on/. 



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

 Size of No. 5605, $ adult from Noel, Mo.: total length, 255 ; tail vertebrae, 

 105 ; hind foot, 36.5. 



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

 Surber got at Stilwell 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. 



Tarnias striatus venastus 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 griseus, but its bright, rich coloration 

 will at once separate it from that form. With the pale yellow lysteri of 

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

 colored true stricitiis 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. 



Type from Stilwell, I. T. No. 5475, ? old adult, collection of E. A. 

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

 specimen from Stilwell, I. T. 



General characters. Size larger than typical S. texanus ; 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 S. texanus sereus as compared with that 

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

 texanus h&B a short rostrum and is much bulged between the orbits. The 

 skull of semis 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. 



^2f m The type: total length, 154; tail vertebrae, 24; hind foot, 19. 



General remarks. Mr. Surber caught the type specimen of Scalops texanus 

 ; , n /'.s' while it was engaged in tunneling on a black-jack ridge at Stilwell. 



Dr. J. A. Allen* gives the following measurements for Sea lops texanus 

 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 vertebrae, 23 ; hind foot, 16.5. The largest male measured : total 

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

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

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

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

 aqnaticus or 6'. aynuficus argentatu*, apart from the smaller size, by the 

 much shorter rostrum and bulging interorbital region. The skull of ;r< "* 

 is much more like that of aquatint*. 



Mr. Surber took a fine series of Scalops aqnaticus argentatus at Stotes- 

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

 very near the range of /S. texanus lereus. JEreus, however, does not ap 

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



Bull. Am. Mus. Nut. Hist., vol. vi, 1894, p. 186. 



