AN EXAMINATION OF TYPES OF SOME EKCENTLY 

 DESCRIBED CRUSTACEA. 



By T. Hale Streets, M. D., and J. S. Kingslet. 



The Peabody Academy of Science havins^ received 

 from Mr. W. N. Lockingtou, of Sau Francisco, some of 

 the tj'pes of the Crustacea described by him iu the "Pro- 

 ceedings of the California Academy of Sciences," we have 

 thought it best to place on record the results of our study 

 of the specimens, especially since many of his new genera 

 and species would be, without his labels, impossible to 

 identify. We have only "Author's extras," and so can- 

 not quote the volume and page of his descriptions. 



Microphnjs platysoma A. M. Edw. Milnia platysoma Stimpson, Annals 

 N. Y. Lyceum Nat. Hist., vii, p. 180. Fisoides? celatus Locking- 

 ton, Proc. Cal. Acad., July 17, 1876. 



Of this species we have two specimens. The two spines 

 on the branchial reofioii are close too'ether. 



Slidrophrys depressa Streets & Kiugsley. Fisheria depressa Lockiugton, 

 1. c, July 17, 1876. 



This species differs from M. platysoma in having the 

 digits excavate at the extremity, in being more granulated, 

 in having the laminiform process on the branchial region 

 somewhat imbricated. There is a spine between and be- 

 low the processes on the branchial and hepatic regions and 

 three spinous tubercles beneath the hepatic process, on the 

 infero- lateral portion. The posterior margin of the cara- 

 pax has a row of bead-like tubercles as in M. jplatysoma. 

 The laminiform processes on the propodal joints of the 



(103) 



