1880.] NATURAL SCIENCES OF PHILADELPHIA. 135 



CAECINOLOGICAL NOTES, No. II.— EEVISION OF THE GELASIMI. 



BY J. S. KINGSLEY. 



I have endeavored in this paper to straighten out the species of 

 the " Fiddler Crabs," basing my work on the large collections of 

 the Academy of Natural Sciences of Philadelphia and of the 

 Peabody Academy of Sciences at Salem, Mass. My material has 

 been ample, embracing more than half the known forms, among 

 which are types of Smith, Guerin, Eydoux, Leconte and Sa}-, 

 with other specimens from Guerin's collection which were identified 

 by comparison with the types of Milne Edwards. I have reduced 

 considerably the number of specific forms, and in so doing I have 

 been actuated not by any desire to overturn the work of others, 

 but merely to arrive at the true limits of the species. A similar 

 reduction in other genera must be made, and will be made, by 

 any one who attempts to stud}' the forms of the whole world, and 

 does not limit himself to those of a small portion of its surface. 

 Among the important features of this paper is the extension of 

 the range of many forms, which has been accomplished either 

 by finding new localities among the specimens studied, or by a 

 union of two or more so-called species which bore different names 

 in different portions of the world. 



I have endeavored to give descriptions and figures of all known 

 forms of Gelasimi, and when possible I have taken them from the 

 specimens themselves ; when I had no specimens, I have given a 

 description compiled from- some other carcinologist, and have 

 followed it by the initial of his name. The same remark will 

 apply to the figures. Localities from which I have examined 

 specimens are followed by an exclamation point (!), and the 

 museum in which the forms are preserved is indicated by an 

 abbreviation ; these abbreviations are : Phila. Acad., Academy of 

 Natural Sciences of Philadelphia, Pa. ; Peab. Acad., Peabody 

 Academy of Sciences, Salem, Mass. ; U, C, Union College, 

 Schenectad}', N. Y. 



Genus GELASIMUS Latreille. 



Cancer (pars.) Linne, Herbst, Fabricius, De Geer. Ocypoda (pars) Bosc, 

 Histoire Naturelle des Crustaces, ii, p. 240 (1828)'; Latreille, 



' I have never seen a copy of the first edition of this work published in 

 the "An X " of the first French Republic (1802-3 of accepted chronology), 

 and my references are either quoted from the second edition by Desraarest, 

 or at second hand from Milne Edwards, or some other author. 



