_Diagnosis._--Size small; according to Davis (_loc. cit._), "... length of hind foot seldom more than 19 mm.; total length seldom more than 140 mm. Skull small and flat, seldom exceeding 33 mm. in occipitonasal length and seldom equalling 10 mm. in depth; maxillary breadth usually less than 10 mm.; alveolar length of maxillary tooth row seldom more than 10.5 mm." _Comparison._--From _S. a. cryptus_, geographically adjacent to the east, _S. a. alleni_ differs in: Size smaller; color paler; skull smaller and flatter. From _S. a. intermedius_, geographically adjacent to the north, _S. a. alleni_ differs in: Size smaller; skull smaller and flatter with shorter tooth-row (see Davis, _op cit._:384, 385). For comparison with _S. a. texanus_, see account of that subspecies. _Remarks._--This mole is named in honor of Dr. J. A. Allen in recognition for his work on Texas mammals. Grateful acknowledgment is made to those in charge of the collection of Recent mammals in the American Museum of Natural History for permitting me to examine the moles from Aransas County and the type specimen of _Scalops argentatus texanus_ Allen. _Transmitted January 15, 1951._ 23-6626