204 University of California Publications in Zoology [ VoL. 23 
Dimensions.—Types: length from 6.4 to 8.5 mm. 
Type Locality—Coast of Chile. 
Distribution—Southern California (either Catalina Harbor or Monterey) to 
Chile; Indian River, Florida, to Rio de Janeiro; Bermudas (Rathbun). A speci- 
men has also been collected at Laguna Beach, California, by W. A. Hilton. 
Remarks.—Should be readily recognizable by its small size, as compared with 
E. productus, and by its entire rostrum. 
Genus Mimulus Stimpson 
Carapace flattened, smooth or nearly so, more or less pentagonal; lateral por- 
tions laminate, much produced, wing-like, anterolateral margin cut by a narrow 
fissure into two closely approximate lobes. Rostrum short, bifid, horizontal. Basal 
antennal joint enlarged at base and narrowing distally. Orbits incomplete below, 
but furnished above with a preocular and postocular spine. First pair of ambula- 
tory legs exceeding others. 
Mimulus foliatus Stimpson 
Mimulus foliatus Stimpson, Ann. Lye. Nat. Hist. N. Y., 7, 200, pl. 3, 
fig. 1, 1860 (1862); A. Milne Edwards, Crust. Rég. Mex., pt. 5, p. 145, 
pl. 18, fig. 4, 1879; Holmes, Occas. Papers Calif. Acad. Sci., 7, 23, 1900; 
Rathbun, H. A. E., 10, 173, 1904; Weymouth, Stanford Univ. Publ., 
Univ. Ser., no. 4, 30, pl. 4, figs. 12-13, 1910. 
Fig. 127. Mimulus foliatus, 3; a, dorsal view, X about 1144; b, ventral view 
of anterior portion, X about 2 (after Milne Edwards). 
Characters.—Carapace flattened and marked with several undulations; lateral 
expansions a little reflexed, margin behind incision nearly twice the length of that 
in front; anterolateral and posterolateral angles wide, latter somewhat produced; 
median region tumid, and bearing two small obsolescent tubercles, in front of 
which there may be two rows of curved setae; posterior part of branchial region 
also with an obsolescent tuberele. Rostral horns short, flattened, with convex outer 
margins, the notch between them narrowly triangular and setose; on upper side 
of rostrum there are two double rows of curved setae. Preocular tooth large, 
triangular, acute; postocular small. and pointing obliquely downward, separated 
by a fissure from preocular. Chelipeds of male large; hand oblong, fingers bent 
downward and curved inward, somewhat gaping near base, distally dentate; 
