MACRURA. SCHMITT. 335 



other male specimens, one mature and the other 

 immature; in two other males, and an additional 

 female, with unbroken rostra the last dorsal tooth is just 

 about the middle of the free portion of the rostrum. As 

 described by Haswell, the post-rostral carina is quite 

 thick and low, and becomes broadened out and flattened 

 behind, losing itself before reaching the posterior third 

 of the carapace. It extends about as far behind the point 

 where the continued cervical groove would cross the 

 dorsuin of the carapace as the first rostral (epigastric) 

 tooth is in front of that point. At this point, moreover, 

 the post-rostral carina is noticeably pinched in or 

 narrowed, broadening out behind to form an elongate 

 triangular area, and showing a more or less distinct 

 longitudinal pit or depression, which is less marked in 

 the male than in most female specimens. The grooves 

 of the carapace carry more or less pubescence. The 

 pubescence is thicker at the upper end of the cervical 

 groove, and on either side of the narrowest part of the 

 post-rostral carina, in the angle made by the ridge with 

 the general surface of the carapace. Otherwise the 

 carapace and abdomen are smooth and shining. The 

 posterior orbital margin shows an orbital spine quite 

 contrary to Has well's statement "supra-orbital spine 

 absent.'' De Man, whose specimens were a little over 

 three inches (about 81 mm.) long, suggests that possibly 

 the orbital spine disappeared in the adult. Though 

 Haswell's cotype is only about 88 mm. (about 3-37 inches) 

 long, the other specimen before me is 126 mm. (about 

 4-87 inches) long; in both specimens, the orbital spine is 

 distinct. The orbital spine, here so called, is a produced 

 sharp angle in the orbital margin, forming in lateral 

 view an apparent flattened spine. 



The legs of the cotype extend about as far forward 

 as in de Man's specimens. The first and fifth legs are a 

 little shorter, the former attaining but the proximal third 

 of the terminal joint of the antennal peduncle, and the 

 latter just aboue five-sevenths the length of the scale; 

 the second legs exceed the antenual by a little more than 

 the length of the fingers; the third pair is the longest, 

 and "extends with the fingers beyond the anteunal scale;'' 

 and the fourth pair only reaches the end of the antennal 

 peduncle. The third maxillipeds exceed the antennal 

 peduncle by the greater part of the length of their 

 terminal joint. 



