418 A HISTORY OF RECENT CRUSTACEA 
Hemiarthrus abdominalis (Kroyer), 1840, on Hippolyte 
Gaimardiu, Milne-Edwards. Kréyer states that he also 
found it on Hippolyte Sowerbe: and another nearly related 
species. J. Sp. Schneider assigns it also to Kréyer’s Hip- 
polyte turgida and pusiola,and to Pandalus Montagui, Leach. 
Bate and Westwood speak of it as a parasite both of the 
Pandalus and of a species of Hippolyte. The full-grown 
female is of remarkable appearance, from her want of 
symmetry, her great marsupial plates enclosing a vast 
number of eggs, and the condition of her limbs, which form 
on one side a little crowded row, while on the other all 
have disappeared except the first. Hippolyte Sowerbei or 
rather Sowerbai, Leach, is a synonym of Spirontocaris 
spinus (Sowerby), and stands therefore in the genus to 
which the species pusiola and Gaimardiw have also been 
recently transferred (see pages 235, 256). 
Phyllodirus, Stimpson, 1857, is thus described by 
Stimpson, in Latin which if not pedantically classical, 
has at least the merit of being very easy for English 
readers to follow :—‘ Feminez pedes thoracis sat validi, toti 
ancorales, unguicuiati; appendicibus branchiales carentes. 
Appendices abdominis branchiales; superiores laterales, 
laminis duabus eequis magnis elongatis; inferiores papilli- 
formes. Abdominis segmentus primus setis dorsalibus 
unguiculatis instructus.’ 
” Phyllodurus abdominalis, Stimpson, 1857, from between 
the abdominal feet of the common Upogebia, ‘Puget Sound. 
On the position of this species the recent authorities do 
not appear to expressany opinion. The other Epicarids of 
Upogebia, Lone and Pseudione, are referred to the branchial 
cavity. 
At the conclusion of this long catalogue it may be 
allowable to express a hope that its utility to the student 
will be in some measure proportionate to the time and 
trouble expended on producing it. It would have been 
easy to sacrifice the useful to the ornamental, and instead 
of showing the extent of the subject, to dwell only 
on the singularities, indulging in a disquisition on the 
extremely eccentric and abnormal forms included in this 
eee ae 
