104 Proceedings of the Biological Societj/ of ]Vashingto)i. 
Measurements. —;'5k\ill of type and skull of a second adult $ from 
Chamelicon, Honduras, tl.ie latter in parentheses: Condylobasal length, 
5() (5().8); zygomatic breadth, 33.1 ( —); length of nasals, 23.1 (2-1.4); 
least postorbital constriction, 8.5 (8.7); upper tooth row, entire, 27.8 
(28.2); mandible, 39.9 (41.7). The Honduras skin, measured in the 
flesh by the collector: Total length, 730; tail vertebne, 435; hind foot, 48. 
Specimens examined. —Three, two from the type locality and one from 
Chamelicon, Honduras. 
Remarks. —The Honduras specimen agrees, in all details of coloration, 
with the type, except that while tlie right arm is almost entirely ))utly- 
white, the left is heavily washed with the color of the upperj)arts. The 
extent of dark coloring at the base of tail is as in the type (much more 
restricted, even, than in specimens of derhianus) and shows no approach 
to P. 1. fervidus of Cuatemala. 
Nectomys squamipes pollens subsp. nov. 
Type from Sapucay, Paraguay. Skin and skull of adult c? (teeth 
moderately worn; basal suture not clo.sed), U. S. National Museum No. 
121,399; collected July 27, 1902, by M'ln. Foster. Orig. No. 800. 
Characters. Larger than squamipes. garleppii, or mattensis, with con¬ 
siderably longer tail and larger hind foot, ear, and skull. Coloration as 
in garleppii, but cheeks and sides less yellowish, more mixed with 
blacki.sh, and color ol underparts more sharply marked from that of 
sides. Very much less reddish than true squamipes from the coast of 
Brazil; all the ochraceous or reddish colors of squamipes replaced b}' 
yellowish-bufl’, and the underparts much less intensely colored. Tail 
more hairy than in the related forms. Skull with well developed supra¬ 
orbital beads extending backward nearly to line of ]:)o.sterior edge of 
squamosal root of zygoma; ])alatal foramina much constricted anteriorly; 
posterior edge of palate rounded, and the sides of the interpterygoid 
space nearly parallel. 
Measurements of type compared with measurements of a slightly older 
adult male of N. s. squamipes from 8ao Sebastiao, Sao Paulo, Brazil, the 
latter in parentheses: Plead and body, 252 (194); tail, 245 (222); liind 
foot, without claws, 49 (45); ear from notch in dry skin, 21.8* (19). 
Skull and teeth. Create.st length of skull, 41) (43.5); condylobasal length, 
43.4 (40.7); zygomatic breadth, 20 (23.1); nasals, 18 (17.4); least inter- 
orbital breadth, 7.7 (6.7); palatal foramina, 8.3 x 4.0 (7.4 x 3.2); 
mandible, 27.2 (23.5); upper molar series, 7.1 (7.0); lower molar series 
7.8 (7.3). 
Remarks. The Paraguayan form of Nectomys squamipes resembles mat¬ 
tensis and garleppii and is much like the latter in color. It is a consider¬ 
ably larger animal than mattensis, with a larger skull, and with the base 
of the bony palate more as in true squamipes. Two specimens from the 
type locality are in the collection. 
* Collector’s Jiieasurement, car, 25. 
