1888.] NATURAL SCIENCES OF PHILADELPHIA. 321 



Cenobita Diogenes, Latr. 



A number of living sj^ecimens obtained at Wistowe, opposite 

 Flatts Village, and kindly presented to us by Miss Edith Allen, 

 daughter of the American Consul. Most of the animals are still liv- 

 ing (October), and apparently flourishing, three months after their 

 capture. The shells occupied by the largest individuals are those of 

 Natica catenoides. 

 Calcinus obscurus, Stimiison. 



Several specimens obtained on the beach of Flatts Village. 

 Clibenarius (Pagurus) tricolor, Gibbes. 



Numerous on the beach of Flatts Village and at the St. George's 

 Causeway ; under stones, etc. 



MACRURA. 



Palinurus Americanus, Lamk. 



We observed a number of specimens of the large Bermuda cray- 

 fish, but unfortunately obtained none. I am unable, therefore, to 

 state positively if the species is correctly referred, but in all prob- 

 ability it is the same as the common West Indian form. 



Scyllarus sculp tus, Milne-Edwards. 



One specimen, purchased at the Crawl, which agrees with Milne- 

 Edwards' description {Hist Nat. des Crust., ii, p. 283) and Lamarck's 

 illustration in iha Encijdopklie, pi. 320. The locality of the origin- 

 al specimen appears to have been unknown, nor have I been able 

 to obtain data regarding this species from any of the later writers, 

 by many of whom it is entirely ignoi^ed. 



Alpheus avarus, Pabr. 



(J.. Edwardsii, Audouin.) 



(J.. Bermudensis, Spence Bate.) 



A series of some twenty specimens collected at the same locality 

 shows considerable variety of form. The smaller specimens are 

 evidently the A. Bermudensis of the Challenger Reports, while the 

 larger ones, agreeing with these in the structure of the head, etc., 

 more nearly approximate in the configuration of the hand A. avarus 

 and A. Edivardsii, the former a common Old World species, and 

 the latter, a species described from the Cape Verde islands. Our 

 series contains what might be considered undoubted representatives 

 of all three (so-called) species, showing all the gradations that unite 

 or separate the forms from one another. Hence, I am constrained 



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