. Bulletin - United States National Museum. Science. CENTRAL PROVINCE SPECIES. 167 Plate XI, Fig. A, of Terr. Moll., V, represents the genitalia of a Sal- mon River specimen of the typical strigosa. The testicle, as usual, was in the summit of the upper lobe of the liver. The epididymis is long, convoluted in its half nearer the testicle. The accessory gland is composed of several long, black cceca. The oviduct is sac-like, not« convoluted, containing eight embryonic shells. The genital bladder is small, with a long, narrow duct entering the upper part of the vagiua, near which it is swollen.
. Bulletin - United States National Museum. Science. CENTRAL PROVINCE SPECIES. 167 Plate XI, Fig. A, of Terr. Moll., V, represents the genitalia of a Sal- mon River specimen of the typical strigosa. The testicle, as usual, was in the summit of the upper lobe of the liver. The epididymis is long, convoluted in its half nearer the testicle. The accessory gland is composed of several long, black cceca. The oviduct is sac-like, not« convoluted, containing eight embryonic shells. The genital bladder is small, with a long, narrow duct entering the upper part of the vagiua, near which it is swollen. The vagina is short and swollen. The peuis sac is long, stout, blunt at apex, where the retractor muscle is inserted. The vas deferens becomes greatly swollen before it enters the sac of tbe penis, which it does above the insertion of the retractor muscle. As the shells of some forms of this species are difficult to distinguish from some forms of Patula soUtaria, it is interesting to state that the genitalia of a specimen of the latter from the same locality offers very distinct specific characteristics, agreeing with Dr. Leidy's figure in Vol. I of Terr. Moll. E have received from Mr. Henry Hemphill specimens of H. Haydeni with the animal, and so variable that I am convinced of its being a variety of strigosa. The revolving lines are not always present, and vary greatly in development. The young shells have erect coarse hairs on the revolving lines. The discovery is an interesting fig. 155. one, as the species was formerly considered extinct. One of the original lot of specimens is here figured. Mr. Hemp- hill found several curious varieties. The ydw of Raydeni (Terr. Moll., V, Plate XVI, Fig. G), as well as its geni- talia and viviparous habit, is the same as in strigosa. Its lingual dentition I figure on Plate XVI, Fig. B. There are 33-1-33 teeth. The eleventh tooth has the side cusp p. uaydeni. and cutting point. Another curious form of this protean species was also found
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