186 RATHBUN 
RAPHONOTUS SUBQUADRATUS (Dana). 
Fabia subguadrata HOLMES, Occas. Papers Calif. Acad. Sci., vil, 87, 1900 
(part). 
Distribution.—Alaska to Monterey, California. Specimens are in the 
National Museum from: South entrance to Akutan Pass, Alaska, 45 
fathoms (AJbatross station 2843); Monterey, in folds of Lucapina crenulata 
(Dr. C. A. Canfield); Pacific Grove, from mantle cavity of Atlus edulis 
(John C. Brown). 
I believe that the specimens recorded from farther south than Mon- 
terey Bay are a distinct species from 2. subguadratus. Those seen and 
described by Dr. Holmes from San Pedro as Fabia subguadrata are the 
species which follows, 2. owe. 
RAPHONOTUS LOWEI Rathbun. 
Fabia subguadrata HOLMES, Occas. Papers Calif. Acad. Sci., vil, 87, 1900 
Py ase lowei RATHBUN, Amer. Nat., XXXIV, 590, 1900. 
General appearance like that of 2. sudguadratus, differs as follows: 
In &. Jowei the turned-down front has no trace of a transverse groove 
and is naked; in &. suéguadratus the turned-down front has a shallow 
transverse sulcus which is covered with pubescence. 
In &. /owei the last joint of the maxilliped does not 
reach the end of the penultimate joint, as it does in 2. 
subquadratus. 
In &. lowei the palm of the chela does not widen dis- 
tally ; its margins are subparallel or a little convex; its 
lower surface has only one line of hair, which is con- 
/ tinued to the end of the pollex; in A. subguadratus the 
Fic. 93. Raphonotus palm widens a little distally, as figured by Dana, and 
lowet. 9%. San Pedro 
Bava Ree ae is furnished with two rows of hair below, the inner 
b. Chela (X 33). one of which is continued to the end of the pollex. 
In &. Jowei the fingers are less arched and less gaping than in #. sud- 
guadratus, 
The carapace is also a little wider in our species. 
Dimensions.—Female, length of carapace 1o mm., width 12.5 mm., 
length of merus of third ambulatory leg 5 mm. 
Distribution.—San Pedro to San Diego, California: San Pedro Bay, 
in siphon of Pholas pacifica, collected by H. N. Lowe, for whom the 
species is named (type locality); San Pedro, in shell of Zapes (Holmes, 
as Fabia subguadrata); San Diego (H. Hemphill), one of the specimens 
a 

