300 BULLETIN OF THE 
Leiomya (Plectodon) granulata Datu. 
Neera granulata Dall, Bull. M. C. Z., TX. p. 111, 1881. 
Plate III. Fig. 8. 
Habitat. Off Sombrero, 54 and 72 fms.; Barbados, 100 fms.; Station 177, 
off Dominica, in 118 fms., sand, bottom temperature 65°.0 F., and a fragment 
at Station 272, in 76 fms., coarse sand, off Barbados, bottom temperature 
64°.75 F. 
The longest specimen measured 18.0 mm., and is pure white. A variety 
velvetina has finer and much closer set granules, more recurved rostrum, and 
less sinuated posterior ventral margin; the concentric strie are also a little 
more prominent. 
The granules are arranged along the lines of growth, and sometimes are 
elongated in that sense. 
Section RHINOCLAMA Datt anv SmirTu. 
Like the last, but without cardinal teeth. Rhinomya A. Adams, not Des- 
voidy or Geoffroy. Sections F and G, Smith. Type Necra philippinensis 
(A. Adams) E. A. Smith. 
Neera notabilis Jeffreys and Neera semistrigosa Jeffreys, not lamellifera 
Dall, belong here. The last, which is closely simulated as to external char- 
acters by semistrigosa, proves on comparison to have different hinge characters. 
Neera teres Jeffreys, inflata Jeffreys, and gomerensis Smith, in so far as they 
represent this type of hinge, belong hereabouts; though Dr. Jeffreys in his col- 
lection had mixed these with other forms not closely related. 
Leiomya (Rhinoclama) halimera Dat. 
This species, represented by two right valves, is probably correctly placed 
here. It may best be described comparatively. 
Though larger than any specimen of L. notabilis Jeffreys, in our collection, 
it is of exactly the same shape and proportions; except that, instead of being 
sculptured like L. notabilis, it has the finely concentrically striate and wrinkled 
surface of L. teres Jeffreys. The hinge has the high and squarish laterals and 
other features of L. teres, but the anterior lateral is a little longer, the space 
between the laterals longer, the groove for the cartilage less marked, and the 
buttress less strong. Lon. 10.0; alt. 6.5; diameter of largest valve about 3.0, 
and of the valves when perfect probably 6.0 mm. 
The specimens were dredged by the U. 8. Fish Commission steamer ‘* Alba~ 
tross,” at Station 2678, in 731 fms., ooze, off Cape Fear, North Carolina, bottom 
temperature 38°.7 F., in the winter of 1885-86. 
