PACKARD.] PHYLLOPODS OF NORTH AMERICA. 305 
teeth, and about 8 much larger than the others, while the long acute 
caudal appendages are peculiar from having but about 4 long spines 
on the base of upper edge, with no fine teeth. 
The hands of the males show no specific characters of decided im- 
portance. 
Length of shell, 16 ™™; breadth, 10 ™™; thickness, 4 ™™; 
Calitornia (Rowell) Mus. Chicago Acad. Se. 4 specimens; Alameda 
County, Cal. (James Behrens), Santa Cruz, Cal., collected by Laura 
I’. Hicox, received through Mr. J. 8. Kingsley. 
It is closely allied in form to JZ. ticinensis of Lombardy, Italy, and 
may be said to represent that species in the Californian fauna. <A de- 
tailed account of the external anatomy of this interesting species is 
given in ‘“ Kstheria Californica Pack. Inaugural dissertation,” &c., by 
H. Lenz, wherein the mouth-parts and appendages, &c., are figured. Of 
25 specimens Lenz received from Mr. Behrens 11 were males and 14 were 
females. 
From the next species, H. newcombii, it appears to differ in the less 
prominent beaks, in the fact that the dorsal edge of the carapace does not 
slope directly down to the posterior extremity, which is not ‘nearly as 
broad as anterior extremity”; and there are 18 lines of growth, instead 
of “about sixteen,” as in Baird’s species, and the punctations of the 
shell are separate. Still it may be found that our species is synony- 
mous with Baird’s newcombit. I have been unable to see the plates, as 
in the copy of the Proceedings of the Zool. Soc. at hand the plates are 
wanting. 
ESTHERIA NEWCOMBII Baird. 
Estheria newcombii Baird. Proc. Zool. Soc., London, 122, Pl. XII, fig. 2, 1866. 
‘‘Carapace oval inshape. Beaks prominent, placed near anterior ex- 
tremity. The dorsal margin slopes directly down to the posterior ex- 
tremity, which is nearly as broad as anterior extremity. Ribs of 
carapace, about sixteen in number, narrower at the beaks, and becoming 
broader as they descend towards the ventral margin. The intervals ef 
the ribs are dotted with punctations, which are small and very numer- 
ous, and run into each othegso as to produce a sort of running pattern.” 
“Length nearly 4 inch; breadth about 4 inch.” 
“« Hab.—California (W. Newcombe, esq., Mus. Brit.).” 
ESTHERIA COMPLEXIMANUS, N. Sp. 
Plates V, figs. 1-7; XXIV, figs. 8, 10; XXV, fig. 6. 
Eulimnadia complezimanus Pack., Bull. U. S. Geol. Survey III, No. 1, 174, April 9, 1877, 
Zoology for Colleges and High Schools, Ist and 2d editions (no description) 
fig. on p. 302, 1879, 1880. 
Shell very long, oblong, not very thick compared with the following 
species ; the beaks very small, situated at the anterior sixth or seventh 
ot the dorsal edge of the shell, this edge being remarkably long and 
straight, more so than in any of the other species. The posterior end 
of the shell is narrow, not full and rounded, neither is the anterior end 
as full as in H. californica. About 15 lines of growth. Head with the 
rostrum rather long, approaching HW. mexicana in this respect. Edge of 
shell with small short spines, and between the lines of growth confluent 
spaces arranged in oblique parallel lines. 1st antennee long and slen- 
der, reaching beyond the lower edge of the shell, the sense papilla very 
20 H 
