422 ANNUAL REPORT SMITHSONIAN INSTITUTION, 1958 
The little minnow seine brought along was much too small for 
effective use in the deepest pool and useless in the smaller, rock-en- 
cumbered ones. Our search for fish was futile, but our 7- by 9-inch 
nylon dipnet, assiduously wielded by Captain Nicholson, captured 
two blind shrimps and some three dozen amphipods; from the cave 
floor we collected more than a hundred inch-long millipedes. 
The shrimps, when later critically examined by Dr. Fenner A. 
Chace, Jr., National Museum’s curator of marine invertebrates, proved 
to be 7yphlatya monae, a species he had described from four female 
specimens taken in 1951 from a 30-foot well on Mona Island, between 
Hispaniola and Puerto Rico, and three others of the same sex dis- 
covered on that occasion in an old catchment basin on a high plateau 
on the island. Only two other Typhlatyas are known, both from 
America, 7’. garciae from a cave at Banes, Oriente Province, Cuba, 
and 7’. pearset from a cave on Yucatan. 
Clarence R. Shoemaker, one of the world’s foremost authorities on 
amphipods and a research associate of the Smithsonian Institution, 
quickly determined that the amphipods from Dark Cave represented 
two new species belonging to two quite different genera, both sub- 
terranean. Neither, scientifically or physiologically, had ever seen 
the light of day. As dwellers in dark, unilluminated places these 
amphipods, like our cave shrimp, have only inconspicuous pigment 
spots where the functional eyes in normal crustaceans of their kind 
are located. Thirty-five of the specimens belong to the genus Metani- 
phargus, of which two other West Indian species are known, one from 
St. Kitts, the other from the Dutch island of Curacao, off the north 
coast of Venezuela. Barbuda now extends the range of the genus 
farther north. The unique 36th amphipod in our haul will be the 
6th species to be credited to the likewise subterranean genus Bogidiella. 
Of the five already known, three are recorded from Europe—at Stras- 
burg, in the Balkans, and in salt water in the Mediterranean area; 
and two from Brazil, one at Bahia in underground salt water, the 
other in fresh water in Amazonas. Zoogeographically, Bogidiella in 
this cavern is an even more unexpected find than the Metaniphargus 
there, as the other Bogidiellas occur in localities very much farther 
away than either of the Metaniphargus species. Furthermore, until 
now Bogidiella has been known only from continental land masses 
almost half a world apart. The millipedes, of which Dr. Clarke got 
138 with just a few “lifts” of a small pair of curved-point forceps, 
seem to be a new species of the genus Z’pinannolene. 
How these subterranean animals get about from island cave to 
island cave, or from mainland to island, or vice versa, is an intriguing 
problem. Millipedes can run about and perchance come to the sur- 
face, where in daylight or dark they may lay their fertile eggs or 
place their young in soil that may become attached to the 
