DECAPOD CRUSTACEA OF BERMUDA. 



PART II MACRURA. 

 By A. E. VERRILL. 



The collections of Bermuda Macrura, studied in the preparation 

 of this article, came chiefly from the sources already acknowledged 

 in Part I.* Nearly all the species are in the collections of the 

 Museum of Yale University. Much the larger part were collected 

 by myself and companions in 1898, 1901, and 1916. Many were 

 also previously in the collections made by Mr. G. Browne Goode. 

 J. M. Jones, Esq., and others. Many of the more obscure species 

 have been studied, also, by Miss M. J. Rathbun, to whom I am 

 likewise indebted for several photographs of rare species, contained 

 in the U. S. National Museum. 



No doubt many more species remain to be discovered, especially 

 of the smaller shrimps. Many of these have very retiring habits, 

 living in holes and crevices in dead corals, etc., or in the oscular 

 cavities of large sponges. Others frequent the quiet waters of 

 lagoons and mangrove swamps, where, owing to their transparency 

 or protective colors, they are not easily seen. We did not have 

 opportunities to use fine meshed seines in such places, which would, 

 no doubt, have given good results. Owing to the absence of fresh- 

 water streams, the various species of fresh-water shrimps and 

 prawns, common in the West Indies, are entirely lacking. 



Many more additions to the number of species are to be expected 

 by dredging in deeper water, outside the reefs. Many of the 

 species of Macrura have interesting and remarkable metamor- 

 phoses, the free-swimming larvae (see plates III, Ilia, XII, 

 XVII), being totally unlike the adults. This is particularly the 

 case with the species of Panulirus (the common Bermuda lobster), 

 Syllarides, Stcnopus, etc. The Bermuda species have been very 

 little studied in this way. With the facilities of the new Biological 



* For Part I : see these Transactions, vol. xiii, pp. 299-474. 



