CARCINOLOGICAL STUDIES. 51 



25. Se s ar m a G e r m a n i k. M. 'Et, 



Sesarma Gennani, A. Milne Edwards, in: Nouv. Archives du 

 Muséum, T. V, Bulletin, p. 28. 



Sesarma Germani , de Man , in : Zoolog. Jahrb. herausgegeben von 

 J. W. Spengel, Bd. II, 1887, p. 651. 



This species is identical with Sarmatium eras- 

 sum Dana ; Milne Edwards informs me that he is of the 

 same opinion. I was enabled to study a typical male spe- 

 cimen of Ses. Germani of the Paris Museum , and I cannot 

 find any important difference between this form and Dana's 

 species. Milne Edwards says that the antero-lateral mar- 

 gins present two teeth , including the external orbital 

 angle: I observe, however, a small, though distinct, 

 second emargination , so that the antero-lateral margins 

 present three teeth. The second lobe is almost twice as 

 long as the first, formed by the external orbital angle. 

 These teeth or lobes are slightly rounded , and the third 

 is very small and may easily be overlooked. The inferior 

 margin of the front is slightly emargiuate in the middle. 



The internal angle of the carpopodite of the anterior 

 legs is acute. This species , finally , at first sight may be 

 recognized by the six or seven parallel, trans- 

 verse and smooth, characteristic crests or rid- 

 ges, with which the upper margin of the palm 

 is ornamented. 



It is to this species that I now refer , with some doubt 

 however, a young female specimen from the Pacific Ocean 

 because it presents some slight differences from the 

 male. The antero-lateral margins present no trace of the 

 second emargination behind the external orbital angles, 

 and the transverse furrows on the upper margin of the 

 palm , which are characteristic of the male , are only re- 

 presented by a few transverse rows of impressed points. 



Measurements of this specimen: 9 



Distance between the external orbital angles 8^/^ mm. 

 Greatest width of the cephalothorax . . . . IP, 



'5 



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Notes from the 1-ieyd.en Museum, Vol. X.HI. 



