LEPTOLITHODES ASPER. 47 
appendages, bounded by the opposite crests of these segments, and forming 
a passage for the admission of water to the gills. This orifice is similar to 
that seen in Echinocerus foraminalus Stimps., but it is not so perfectly formed. 
The apex of the abdomen (in the female) is turned to the right (most 
strongly in the larger specimen); the marginal plates are wanting on the 
left side; all the abdominal appendages excepting the first are aborted on 
the right side. 
Length, 64 mm.; breadth, 75 mm.; length of cheliped, 73 mm.; length 
of first ambulatory leg, 92 mm. (merus, 24 mm. ; carpus, 20.5 mm. ; propo- 
dite, 18 mm.; dactylus, 18.5 mm.). 
Station 3384. 458 fathoms. 1 fem. 
3304, “Sli To ovie. 4 
The previously known species of Paralomis comes from the Straits of 
Magellan. 
ry 
LEPTOLITHODES Benepicr MS. 
As before stated on page 45, a specimen of Paralomis granulosa in the 
United States National Museum clearly demonstrates the generic diversity 
of that species and the two forms assigned to Paralomis by Henderson in his 
report on the Anomura of the “Challenger” Expedition. In a paper 
which will be published, before the present memoir, in the seventeenth vol- 
ume of the Proceedings of the United States National Museum, Mr. J. E. 
Benedict has established the genus Lepfolithodes for the reception of Paralomis 
aculeata Hend. and allied species. To this genus both P. aspera and P. longipes 
of my preliminary report belong. 
Leptolithodes asper Fax. 
Plate VIII. 
Paralomis aspera Fax., Bull. Mus. Comp. Zodl., XXIV. 164, 1893. 
5? 
regions well defined and prominent; the posterior portion of the postero- 
lateral margin is raised into a rounded irregular ridge, and there is a round- 
ish hump on each branchial region in front of the posterior margin of the 
carapace ; whole surface of carapace and abdomen thickly beset with papillee 
or tubercles, each one of which is encircled with a crown of stiff setae. Ros- 
trum short, indistinctly tripartite, multispinose, lower part armed with as 
Carapace pentagonal, as broad as long; gastric, cardiac, and branchial 
