IN July last Dr. H. W. Howard forwarded to me a specimen of Armadillidium vulgare (Latreille) in which he pointed out that the styles were very small, On examination, this was confirmed, and I also noted that the oostegites had commenced to form. The specimen was carefully watched for eleven weeks, when it died ; no further development had taken place. On examining the specimen internally, I found that the two ovaries were present, but only about half the size of those normally present. The two oviducts were quite normal. Moreover, on the animal's right side there was a duct, which opened on to the first appendage of the metasome, but no trace of testes. The anterior portion of this duct was slightly wider (vesicular semmalis) than the longer posterior half (vas deferens). Legrand1 has described a case in this same species.