504 BEPORT ON THE ORDER STOMATOrOTXA—BIGELOW. voL.xvn. 



* * Dactylus witli 12 teetli. Eyes nearly globular; telson nearly square, 



without ( ? ) teeth or spines scolopexdra, Latreille. 



* * * Dactylus with 15 to IG teeth. Eyes cylindrical; telson nearly square, 



with a pair of mobile submetlian spines and 10 submedian denticles. 



EXCAVATRix, Brooks. 

 J). Eyes large and subtriangnlar. 



' Dactyhis with 5 to 7 teetli. Telson smooth, with a slight median elevation 

 and marginal spines, only the lateral pair acute. 



GLABRIUSCULA (Lamarck) Meyers. 

 ^ * Dactylus with 9 to 10 strong teeth. 



Hind body smooth and telson like the preceding. 



MACULATA Fabricius. 

 Hind body with longitudinal wrinkles; sixth abdominal somite gro- 



tesqnelj- sculptured ; telson smooth miersii, De Vis. 



Telson roughened with line granulations on each side of -the flattened 

 shield-like crest; 6 strong and acute marginal spines; submedian 

 denticles fused scafsricauda, Lamarck. 



* * * Dactylus with 11 teeth. Telson like the preceding, but more spinous. 



DESAUSsCREi, Stimpsou. 



* * * * Dactylus with 20 teeth. Telson nearly as in macnlata, eyes (f ). 



I'OLYDACTYLA, von Martens. 



LYSIOSQUILLA BIMINIENSIS, Bigelow. 

 LynosquUhi himininisis, Bigelow, .Tolms Hopkins Univ. C'irc, 106, p. 102, 1893. 



Diagnosis. — A LysiosquiUa having cylindrical eyes; teeth on the 

 dactyhis of the rajitorial chiw, the terminal one the strongest; broadly 

 ovate appendages on the first 2 pairs of pleopods and strap-shaped 

 ones on tlie third pair; a nearly quadrate rostrum Nvith a median spine; 

 a smooth carapace without angles; the angles of the segments of the 

 hind body rounded, except the posterior lateral angles of the sixth 

 abdominal segment, which are produced into spines; a long spine curv- 

 ing backward on the anterior edge of the articulation of the uroi)od; a 

 transverse row of 5 dorsal spines on the telson, and <> marginal spines, 

 the submedian pair being mobile; on each side 3 to 4 submedian 

 denticles, not minute, 4 intermediate and 1 lateral one. 



General (hscription. — This species from the Bahamas may prove to 

 be identical with the Australian L. acanthocarpns, but Miers does not 

 mention the very striking coloring of our species, and the raptorial 

 claw and the telson seem to differ. 



The body (fig. 4) is rather flat, generally smooth, and somewhat 

 loosely put together, The carapace and the exposed thoracic region 

 each occupy a little less than one-fifth the total length of the body. 

 The width of the carapace is about seventy-five-ninetieths of its 

 length on the median line, Avhile this is equaled by the greatest width 

 of the abdomen. The length of the telson is three-sevenths its width 

 and one-third the length of the carapace. The eyes are small and 

 cylindrical and their bases are cov^ered by the rostrum. The latter is 

 nearly square and has a shar[) median sj^ine that leaches forward to 

 the proximal edge of the corneal parts of the eyes. The carapace has 



