24 PROCEEDINGS OF THE NATIONAL MUSEUM, vou. xxx1v. 
LEIDYA DISTORTA (Leidy). 
Cepon distortus Lriwy,: Jour. Acad. Nat. Sci. Phila., (2), III, 1855, p. 150. 
pil. x1, figs. 26-832.—HarcrEr, Report U. S. Fish Commission, Pt. 6, 1880, 
p. 511.—KossMANN, Zool. Ergeb. einer Reise in die Kiist. des Rothen 
Meeres, III, Malacostraca, 1880, p. 122; Mittheil. aus der Zool. Station 
zu Neapel, III, 1881, first half, p. 182.—RicHarpson, Am. Nat., XXXIV, 
1900, p. 309. 
Leidya distorta CoRNALIA and PANCERI, Mem. R. Acad. Sci. Torino, (2), 
XIX, 1858-1861, p. 114.—GiarbD and BonniER, Trav. du Labor. de Wime- 
reux, V, 1887, p. 68, fig. 12.—RICHARDSON, Proc. U. S. Nat. Mus., XX ITT, 
1901, p. 579;- Bull. U. S. Nat. Mus., No. 54, 1905, pp. 5141-512. ; 
Localities.—Atlantic City, New Jersey, on Uca pugilator (Bosc) ; 
Bermudas on Pachygrapsus transversus (Gibbes). 
It is interesting to note that although Leidya distorta was first 
found at Atlantic City, New Jersey, its host, Uca pugilator, extends 
as far south as the coast of Florida, and 
the new host, Pachygrapsus transversus, 
extends as far north as the Florida coast, 
so that the continental ranges of the two 
hosts overlap. 
Description of female——Body rather ir- 
regular in outline, oblong-oval. Color 
yellow. (See figs. 1-2.) 
Head large, bilobed, and with the front 
produced in a wide border or margin. 
Kyes wanting. | 3 
HiGs 1a“ UMIDY A DISTORTAL VADULT First two segments of thorax short. The 
REMS UE (DORSAL IE, three following segments are the largest, 
and are subequal in length, about twice as long as the first; sixth a 
little shorter than fifth; seventh about halt 
as long as sixth. The second, third, fourth, 
and fifth segments have in the middle of 
the dorsal part of the segment a squarish 
plate, which in the fifth segment has the 
outer edges considerably elevated, so as te 
form a longitudinal carina on either side, 
which extends posteriorly over the sixth 
segment. Coxal plates or epimera are pres- 
ent on the anterior portion of the lateral 
margin of all the segments, but are almost : 
completely hidden by the large ovarian  ye¢,2—Z1eya pisrorra. ADULT 
boss which projects upward in a large, SREEALS (ESR WEEN) 
prominent. lobe. There are five pairs of incubatory plates, which 
«Figs. 1, 2, and 5 are from photographs taken in the U. S. National Museum. 
In the specimens photographed the pleural lamelle and the pleopoda were 
bent, so that they do not appear as long as in Leidy’s figures. 
