184 BULLETIN 91, UNITED STATES NATIONAL MUSEUM. 



Genus HOCHSTETTERIA Velain. 



HOCHSTETTERIA LIMOIDES Smith. 



There are three lots of this species in the collection of the United 

 States National Museum, all from Port Alfred, as follows: Cat. No. 

 186925, contains three valves of this species (Coll. No. 295); Cat. No. 

 186930, one valve (Coll. No. 300); Cat. No. 251067, one specimen 

 (Coll. No. 1584). 



HOCHSTETTERIA VELAINI Smith. 



Cat. No. 186926, U.S.N.M., two specimens from Port Alfred (Coll. 

 No. 296). 



HOCHSTETTERIA ALFREDENSIS, new species. 

 Plate 39, figs. 6, 7. 



Shell white, variously mottled with brown. Prodissoconch form- 

 ing a conspicuous shield winch is separated from the rest of the shell 

 by a strongly raised cord. The anterior and posterior lateral portion 

 of the succeeding part forms almost an isosceles triangle, the basal, 

 portion of which is well rounded. The valves are marked by fifteen 

 moderately strong, very regular radiating threads, and very regularly 

 spaced, equally strong, concentric threads, which form squarish pits 

 on the early portion of the shell and elongate pits near the base. 

 The junction of the radiate and concentric threads forms feeble, 

 rounded nodules. The hinge is shown 'in our figure. 



Cat. No. 182925a, U.S.N.M., contains the type and two additional 

 specimens from Port Alfred (Coll. No. 295a). The type measures: 

 Altitude, 3.6 mm.; length, 3.3 mm. Cat. No. 249855, U.S.N.M., con- 

 tains another specimen from the same place (Coll. No. 1127). 



HOCHSTETTERIA PARAMOEA, new species. 

 Plate 39, fig. 4. 



Shell semitranslucent, white. Prodissoconch forming a conspicu- 

 ous shield which is separated from the rest of the shell by a strongly 

 raised cord. The shield itself is marked by very fine, closely spaced, 

 radiating threads. The anterior lateral margin of the succeeding 

 part slightly concave; posterior slightly convex; basal margin strongly 

 rounded. Outer surface marked by nine equal, and equally spaced, 

 regular, slender, radiating threads, and equally strong, very regularly 

 spaced, concentric threads, the junction of the two forming feeble 

 nodules. 



Cat. No. 249854, U.S.N.M., contains the type and another speci- 

 men from Port Alfred (Coll. No. 1126). The type measures : Altitude, 

 2.2 mm.; length, 2.1 mm. 



