120 Bulletin, Vanderhilt Marine Museum, Vol. II 



Lambrus melanodactylus Desbonne, in Desbonne and Schramm, 

 Crust, Guadeloupe, p. 21, 1867. 



Platylamhrus crenulatus Stimpson, Bull. Mus. Comp. Zool., vol 2, p. 

 129, 1871. 



Platylamhrus serratus A. Milne Edwards, Crust. Keg. Mex., p. 156, 



pi. 30, figs. 1 and Ic, 1878. 

 Lamhrus granulatus Kingsley, Proc. Boston Soc. Nat. Hist., vol. 20, 



p. 150, 1879. 



Parihenope (Platylamhrus) crenulata Verrill, Trans. Conn. Acad. 

 Arts and Sci., vol. 13, p. 417, pi. 28, fig. 5, 1908. 



Parthenope crenulata Verrill, ibid., vol. 26, p. 155, text fig. 12, 1922. 

 PartJienope (Platylamhrus) serrata Rathbun, Bull. 129, U. S. N. M., 

 p. 516, pis. 180, 181, pi. 275, figs. 7-10, 1925. 



Parthenope (Platylambrus) pourtalesii (Stimpson). 



Plate 37. 



Name : This species was named in honor of Count Pourtales, asso- 

 ciate of the elder Agassiz in the first deep-sea dredgings of the 

 ''Blake." 



Diagnostic characters : Carapace ovate-triangulate with a strong 

 lateral spine and another terminating the branchial ridge ; branchial 

 and hepatic ridges deeply separated from the gastro-cardiac, which 

 are much elevated; a median row of sharp spines on the gastric, 

 cardiac, intestinal regions and continued on the abdominal belt. 

 Chelipeds with the upper surface elevated, spinous. Dactyli of am- 

 bulatories covered with velvety hairs. 



Type: Taken by the ''Blake" off Conch Reef, French Reef and 

 American Shoal, 40 to 117 fms., types destroyed in the Chicago 

 holocaust. 



Distribution: From south of Martha's Vineyard, Mass., Lat. 40° 

 07' N., Long. 70° 32' W., southward in the course of the Gulf Stream 

 to Florida, also off Havana, Cuba, and off Grenada, in depths ranging 

 from shallow water to 150 fms. 



Material examined : One male and one female dredged in 150 fms., 

 seven miles off Alligator Reef, Florida, March 30, 1916, by the "Ara," 

 William K. Vanderbilt, commanding. 



