64 S. I. Smith — Crustaceans of the Atlantic Coast. 



posed of a short basal portion, a linear outer lamella about three 

 times as long as the base, and a very slender and minute inner 

 lamella. The appendages of the sixth segment show nothing to dis- 

 tinguish them from the corresponding appendages in the species of 

 Eupagiirus. The telson is about as long as broad and its posterior 

 mai'gin is arcuate and only very slightly emarginate in the middle. 



Measurements. 



Length from front of carapax to tip of abdomen, ... 60'iiini 



" of carapax along fliedian line above, .... 21-7 



" " from front to cervical suture, . - - 13-4 



Breadth of carapax at bases of antennge, - - - - - 12-0 



Length of eye-peduncles, ...-.- 6'3 



" peduncle of antennula, - - - - - 22-0 



" ultimate segment of same, -. - - - - 11 '2 



" major flagellum " ..... g-o 



" minor " '<..... 5-0 



" peduncle of antenna beyond front, - - - - irO 



" flagellum of antenna, ..... no- 



" chelipeds, .... right, 61- left, 45- 



'' carpus in chelipeds, - - - 18- 12- 



" propodus in chelipeds, . . - - 26- 15- 



Breadth of " " ... 13-7 6-5 



Length of dactylus, " .... 14-0 8-7 



" first ambulatory leg, left side, - - - - 83- 



" propodus of same, ...... 20* 



" dactylus "..-..- 27-8 



" second ambulatory leg, left side, .... 90- 



" propodus of same, --..-- 24' 



" dactylus " ...... 32-5 



Of this remarkable species I have seen only a single specimen, re- 

 ceived, after the first part of this paper was in type, from Mr. Daniel 

 McEachern, schooner "Guy Cunningham," Gloucester, Massachusetts. 

 It was taken, probably upon a trawl line, in 250 fathoms, hard bot- 

 tom, off the coast of Nova Scotia, nearly due south of Halifax, north 

 latitude 42° 41', west longitude 63° 6', and was inhabiting a peculiar 

 compound actinoid polyp, which had evidently first grown upon the 

 spiral gasteropod shell inhabited by the crab, afterward extended far 

 beyond the shell, which it has very nearly or quite absorbed, and 

 continued its growth rudely in the form of the original shell ; very 

 much as Epizoatithiis Americamts forms spiral cases inhabited by 

 JEupaguri. 



Munadopsis cnrvirostra Whiteaves. 



American Journal of Science, III, vol. vii, p. 212 (3), 1874; Report on further 

 deep-sea dredging operations in the Gulf of St. Lawrence [in 1873J, p. 17, [1874?j. 



Gulf of St. Lawrence!, 180 to 220 fathoms (J. F. Whiteaves). 



