244 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 97 
Ammothea achelioides is an immature form of A. spinosa in which 
the chelifores are still chelate. 
ACHELIA SCABRA Wilson 
FicureE 38, c, d 
Achelia scabra Witson, 1880, pp. 475-476.—Gitray, 1942, p. 460. 
Ammothea scabra NEEDLER, 1943, p. 16, fig. 21, a-c. 
RECORDS OF COLLECTIONS 
South of Cape Sable, Nova Scotia, Oct. 7, 1908, 45 fathoms, Owen Bryant 
coll., 2 females. 
Off Grand Harbor, Grand Manan, August 1910, H. L. Clark and H. B. Bigelow 
colls., 1 male (M.C.Z.). 
Wilson’s description of this species is based on two specimens which 
he had previously mistaken for A. spinosa, a male from off Cape Ann 
and a female from St. Georges Bank. Two more females were found, 
in reexamining the material, in a vial identified as A. spinosa, from 
Casco Bay, 1873. Giltay’s record (Prince station 43) extends the 
range of this species to the Gulf of St. Lawrence. 
Achelia scabra differs from <A. spinosa in the reduction of spiny 
tubercles on the first coxae, the presence of large tubercles on the 
posterior outer corners of the lateral processes, and the reduced length 
of the auxiliary claws. The specimen from Grand Manan has a few 
more spines on the first coxae than seem to be usual for this species. 
In none of the specimens of spinosa or scabra could I find auxiliary 
claws of transitional length. 
ACHELIA GRACILIS Verrill 
Ficure 38, f, 9 
Achelia (?) gracilis VERRILL, 1900, p. 582, pl. 70, fig. 10. 
Ammothea gracilis CoLn, 1904b, pp. 317-323, pl. 21, figs. 4-14. 
Ammothea (Achelia) gracilis Giutay, 1934b, p. 5. 
Achelia gracilis Marcus, 1940b, p. 79. 
Record of collection—Bermuda, July 8, 1905, from Pennaria, 10 specimens. 
Although Giltay gives the Bahamas as the further distribution of 
this species, there is no material in the museum collections from that 
region. Giltay’s record may be founded on unreported material in 
the Belgian Museum or on National Museum material which has 
since been mislaid. It is evidently common at Bermuda and is 
represented in the Woods Hole Oceanographic Institution fouling 
collections from station G12, Port Everglades, Fla., August 16, 1943. 
ACHELIA SAWAYAI Marcus 
Ficure 38, e 
Achelia sawayai Marcus, 1940b, pp. 81-86, figs. 10, a—f, 17. 
