Liomys irroratus alleni, Goldman, N. Amer. Fauna, 34:57, September 7, 1911, part.
Range.—Pátzcuaro and vicinity.
Specimens examined, 16: nos. 100170-100184 and 50356 (U. S. N. M.), distributed, with reference to Pátzcuaro, as follows: 3 mi. NW, 6,700 ft., 1; 2 mi. W, 7,700 ft., 5; 2 mi. W, 6,700 ft., 2; Pátzcuaro itself, 1; 5 mi. S, 7,800 ft., 7.
Remarks.—None of the eight females contained embryos. Two adult males weigh, in grams, 71.5 and 65.1; the average and extreme weights for five adult females are 50.8 (44.8-61.8).
Liomys irroratus alleni (Coues)
Northern Spiny Pocket Mouse; Spanish, Ratón Norteño
Heteromys alleni Coues, Bull. Mus. Comp. Zoöl., 8:187, March, 1881, type from Río Verde, San Luis Potosí, México.
Liomys irroratus alleni Goldman, N. Amer. Fauna, 34:56, September 7, 1911.
Range.—Northeastern part of state.
Specimens examined, 5: nos. 50325-50329 (U. S. Nat. Mus.) from Queréndaro.
Remarks.—The specimens from Queréndaro are not typical of the subspecies L. i. alleni in that the shape of the interparietal bone and width of the basisphenoid bone are almost exactly intermediate between the conditions obtaining in typical L. i. alleni and topotypes of L. i. acutus.