38 GEOLOGICAL SURVEY OF THE TERRITORIES. 
seems so nearly allied. The specimen is of interest on account of its 
large size, and also as being the first of this growp of crustaceans yet 
recognized from the Cretaceous formations of this country. 
“ Locality and formation.—The specimen here described and figured 
was obtained from the Cretaceous rocks near San Antonio, Texas, by 
Mrs. N. S. Walker, of that place, and in honor of whom the specific 
name is given.” 
APPENDIX TO CONTRIBUTIONS TO INVERTEBRATE PALEONTOL- 
OGY, NO. 2. 
The late Dr. B. F. Shumard had, before his death, prepared drawings 
of a part of the fossils which he had from time to time previously pub- 
lished in the Trans. Saint Louis Acad. Sci. and the Proc. Bost. Soc. Nat. 
Hist. These drawings were never published by him, but he procured 
photographie copies of a part of them for the late Mr. F. B. Meek. The 
last-named gentleman, at the time of his death, left these copies in pos- 
session of this Survey. A few of them were reproduced among the illus- 
trations of Cretaceous fossils in the annual report of this Survey for 1877. 
It is deemed of importance that the public should have, as far as possi- 
ble, the means for identifying the species that have been described by 
Dr. Shumard, and therefore all the remaining figures that are available, 
as just stated, which represent Cretaceous species, are reproduced in 
this report. All the figures on plate 18 are thus reproduced, besides 
one of those on plate 16. 
It is not deemed expedient at this time to either republish Dr. Shu- 
mard@’s descriptions of these fossils, or to enter into any discussion of the 
subjects which they may suggest. Therefore, only alist of the names he 
gave them will be here given, together with references to the figures 
and to the places where the descriptions are published. 
CIDARIS HEMIGRANOSUS Shumard. 
Plate 18, figs. 2 a and b. 
For description see Trans. Saint Louis Acad. Sci., vol. i, p. 609. 
GERVILLIA GREGARIA Shumard. 
Plate 18, fig. 3 a. 
For description see Trans. Saint Louis Acad. Sci., vol. i, p. 606 
NUCULA BELLASTRIATA Shumard. 
Plate 18, figs. 5 a, b, and ¢. 
For description see Proc. Bost. Soc. Nat. Hist., vol. viii, p. 202. 
NUCULA HAYDENI Shumard. 
Plate 18, figs. 6 a and b. 
For description see Trans. Saint Louis Acad. Sci., vol. i, p. 602. 
