422 REVIEWS AND BOOK NOTICES. 
Packarda’s figure (in AMERICAN NATURALIST, |. c.) has tarsi as in the first named genus, 
one or two jointed. In Phrixis they are much as in Phalangium, which the species 
also resembles in its long limbs. 
PHRIXIS LONGIPES Cope, sp.nov. Legs eight times as long as the body, tarsus of the 
te ter with five, thos “etic — Sag with six joints, those of the nape not tne 
e first and secon very long; au shorter than fem COX® 8 
pirli Legs with h scattered. “i rather rote hairs. Last tarsal pin di one e claw r 
s fe i a 
secon rtic 
end directed inwards. Mandibles pubescent. Five narrow, sai one caramel, segments 
of the fie ago the penultimate wider mag the others. Body pu pap Color v very 
pale; ith a straw-colored shade. Length of body 1.17 lines, or m. ongest leg 
: This species, though small, considerably exceeds the Acanthocheir armatus in dimen- 
sions. i 7 ; 
STYGOBROMUS Fi 
Gen. nov. Gammaridarum. Near Gammaris. e first antennz with flagellum, faa 
ninok eater than the ne Two pairs of iimbs “chelate by the pores n of the las 
oe like segment; other limbs clawed. Terminal abdominal segment very short, spi- 
‘ous; the CERNE ERAN seg behr with a URE Tim with two equal styles, os ae antepe- 
nultimate peg eg t and n a Eye m the 
This s nearer to the mmarus Shan: ge allied genus described fro zsa 
Austria b Daven, the Ni iph yah rot Se hiödte.* In the latter the first antenne ane ier 
larger. "wad the body terminates ds very ne serie ‘the last abdominal limb is Ghat 
vided like that which precedes In Stygobromus the penultimate “Hmb is s like t iE 
represented by Schiödte for Nipharnet, heats I am not certain whether it is gee 
cally identical. The last limb is about equally divided, but the simple basis 
mitts s just possible that the antepenultimate limb represents the basis and one sty 
only. for in that of one side a slight process appears at the extremity of a vo reenrved 
Ken though it is not visi bie o n that of the other. The terminal limbs “Th animals 
= appressed to the last abdc ratni il patie fo ming a fulcrum o vig bence of 
f this genns are r adunite and swim much as the common Gas nmari. Thea 
oft 
STYGOBROMUS VITREUS Cope. “Gammaroid Crustacean” Cope, A n. Mag. Nat. 
Hist., aoe in Two last ope. í of li mbs appressed to last abdominal bristles an an of 
near ly pau length, forming a brush. La gment of abiongi wit 
bri stles ae gade p ine e fom the third pth vr neat 
mbs 
aatan nnæ half as lon ka the aari erate Galore: ce Heres segments, aoe of 
pon as the last Sica abdominal segments. Total hia of head and body 21 
There are few conspicuous hairs. the m which stand at the 
of the last joint of the limbs, rising from the base of the claw: Color trautucen 
REVIEWS AND BOOK NOTICES. 
VEGETABLE Parastres as Causes or Disease. ?— wn 
these two papers’ gives the recent ideas, as seen py an an able = 
advanced observer, in regard to those forms of cryp ptogamie veg" fe 
tation whose growth is believed to be the cause of B the . 
Favus, and a few similar affections. Dr. White discusses ce 
* Proc, Entom. Soc., London, 1851, ; 
t Vegetable Parasites, and aik te then caused by their grow wth a blet. 
James C. Pi M.D., Prof. of Dermatology in Harvard University. e 
Boston. see 
tine thé Sa keraat of Vegetable Organisms within thé Thorax of Liv ware 
-J Murie, F.L.S., etc.; Lecturer on Con bag Anat., Middlesex 
vues the Royal Microscopical Society, Jan. 3,1 
The first of 
