104 Addison E. Vcrrill, 



Legs of third pair are stouter ; carpus to merus, I : 2.2 ; to propo- 

 dus, i : 1.6 or 1.7; width of merus to its length about 1 : 4, often 

 less. The dactyl is elongated, a little curved ; its hooks are almost 

 parallel; the dorsal one is nearly twice as long as the other (figs. 

 id, ic). 



The telson (fig. i/) is stout, with a wide, convex distal margin; 

 its length is 1.06 times its width at base and i : 84 times that of 

 its distal margin ; its lateral margins are a little sinuous ; the 

 postero-lateral angles have two pairs of small spinules ; the pos- 

 terior edge is fringed with about 20 plumose hairs (22 in my 

 examples). Length of largest examples not over 25mm. Eggs 

 are small, about 0.6 mm, becoming i mm, and give rise to zoeas. 



Coutiere recognized two named varieties or "forms," viz. 

 bahicnsis (his fig. 26), from Brazil, and antiUcnsis (fig. 27), from 

 the West Indies. He also recorded a variety without name (our 

 pi. 47, fig. 2), from the Bermudas, in which the basicerite has 

 unusually strong spines. It has also a stouter small chela. Some 

 of our Bermuda specimens agree well with the latter ; others agree 

 better with the variety antiUcnsis. 



The latter has the frontal teeth longer and narrower, especially 

 the rostrum, which is only about half as wide as the orbital teeth, 

 and a little longer; the latter are more acute than in the typical 

 form. In these respects it agrees better with Say's original descrip- 

 tion than does the typical form of Coutiere. This form also has 

 a stouter antennular stalk which is only 4.2 to 4.3 longer than wide ; 

 the carpocerite is also longer, exceeding the antennular peduncle 

 by the length of its third article, and its form is more ovoid, its 

 width to its length being about as i : 3.2 or i : 3.15 ; the antennal 

 scale is also a little wider and the smaller chela is more swollen. 

 The large chela, basicerite spines, dactyls of third legs, joints of 

 second legs, agree with those of the typical form described above. 



The following large figured male and female specimens (No. 

 1827, plates 21, fig. i: 23, 3; 33, fis. 4 50; pi. 34, 2-2w), I. 

 have selected as typical specimens of the species as limited by 

 Coutiere. 



The three frontal spines are somewhat elongated, acuminate, and 

 triangular, tips very acute and carrying one or two small setae 

 (pi. 23, fig. 3; pi. 33, fig. 5). The rostrum is slightly longer than 

 the ocular spines, with the under side compressed, as seen in pro- 

 file, and a little deeper than the ocular spines, which are more 



