252 TATEM, ON NEW SPECIES OF MICROSCOPIC ANIMALS. 
dilated at the posterior extremity above the foot ; the neck 
encircled by a ruff of reflexed sete ; head slightly trifoliate ; 
eyes two, obsolete, but distinguishable as obscure puncte; 
mouth infundibuliform, suctorial ; esophagus straight, longi- 
tudinally plicate (obvious enough when observed in the act 
of swallowing comparatively large masses of decaying vege- 
table matter); stomach an elongated cone, terminating in a 
short rectum and anus, opening just above and between the 
toes, which are very long and annulate; .rotatory organ 
circular, abdominal, as in the other species of the genus ; 
length ~; to ;{,. The figure which accompanies this is 
x 380. (Plate X.) 
II.—The ponds and ditches of this neighbourhood afford, 
in greater or less profusion, two of the three known species 
of Stephanops, viz. S. mutica and S. lamellaris; more rarely, 
however, a fourth and undescribed species may be met with. 
Its range is a very limited one, even in this locality, one 
pool only, that in the King’s Meadow, near this town, 
furnishing it in any numbers ; but one specimen, so far as I 
yet know, haying been obtained from any other. It is a 
remarkable form, and, though small (,},), would not, if 
widely distributed, be readily overlooked by any micro- 
scopist. 
The Stephanops longispinatus (mihi) is less active than 
either of the other two species known to me, swimming 
with a slow deliberate movement through the water, lowering 
its long dorsal spine to clear obstructions, and exhibiting 
none of the restless energy of either S. mutica or S. lamel- 
laris. The lorica is oval, as seen in the dorsal view, 
expanding in front into a hood, which is narrower and deeper 
than in the other species; eyes two, frontal and widely 
separated; dorsal spine very long, articulated to the lorica 
by a ball-and-socket joint, erectile; foot of three joints, 
spined on either side, and terminating in short toes ; rotary 
organ a wreath of short cilia within the hood; jaws of 
esophageal bulb single-toothed ; stomach apparently with 
several constrictions. Neither ovary nor contractile vesicle 
has been detected by me, having probably been over- 
looked. 
I1I.— Occasional visits to Hastings have supplied me with 
a Cothurnia, which, though it may scarcely be accepted as a 
distinct species, must certainly be regarded as a notable 
variety of Cothurnia maritima. But one locality affords it, 
namely, a ditch of brackish water which extends for some 
distance by the side of the road leading from St. Leonards 
to Bexhill. But little if any difference can be observed 
between the animals of this and the~ ordinary form of 
