258 NATURAL HISTORY BULLETIN. 



A specimen about one-half the size of the above was 

 dredged on the Bahama Banks. The horns are more nearly 

 parallel throughout their length, The orbital width equals 

 the branchial width exclusive of spines. Branchial spines 

 more slender than in the above. 



These specimens are specifically distinct from those which I 

 referred in 1872 provisionally to M. euthcca. These last are 

 possibly a variety of M. concavum Miers. 



35. Microphrys bicornutus (Latreille) . 



Stations 45 and 46, off Key West, shallow water; Dry 

 Tortugas, Harbor Island, Egg Island and Spanish Wells, 

 Bahamas; Bahama Banks. 



36. Pitho aculeata [Gibbes) ( = Othonia aculeata of 



authors). 

 Tortugas, shallow water in gulf weed; Spanish Wells, Ba- 

 hamas. 



37. Pitho anisodon [von Martens) ( = Othonia lherm- 



inieri Rathbun not Schramm}. 

 Station 44, off Key West, 5^ fathoms. 



38. Pitho lherminieri {Schramm*) ( = Othonia caroli- 



nensis Rathbun). 

 Station 46, off Key West, shallow water; Bahama Banks. 



39. Pitho mirabilis {Herbst.). 

 Bahama Banks. 



Among the Herbstian types in the Berlin Museum are three 

 carapaces labeled " Cancer mirabilis " by Herbst. They are not, 

 however, all the same species, the larger being nearly smooth 

 with five large, entire, acute and widely divergent teeth, the 

 two smaller having a granulated carapace and five subacute 

 teeth with denticulated margins and diminishing in size from 

 the anterior to the posterior. The first of these species was 

 described in 1875 by A-. Milne Edwards under the name Otho- 

 nia IcBvigata from the Antilles; the second by myself in 1892 

 as O. rotunda, from Key West, Florida. The name mirabilis 



