Mr. J. Y. Johnson on a new Species of Penzeus. 255 
the under surface of the marginal shield being destitute of any rings 
or spots. The head and neck of £. chinensis are covered with uni- 
form narrow black lines, which on the chin and throat form circles. 
E. chinensis, like FH. Bealei, is a true Emys, with slender, distinctly 
developed toes and fingers, which are united by a web to the claw,— 
E. chinensis having moderate-sized thick scales in the front of the 
fore legs, with some larger and broader scales, or small shields, scat- 
tered among them, and #. Bealei small granular scales on the legs, 
with three or four broad, thin, lunate, band-like shields across the 
front of the fore legs. 
In the black speck on the neck and body, and the ornamental 
lines on the head, this species has some affinity to H. pulcherrima, 
described and figured in my Catalogue from a very young specimen, 
said to come from Mexico. But this habitat is doubtful, as some 
other animals, procured from the same person and said to be from the 
same habitat, have proved to be from other countries. This species 
also, as far as can be judged from the dry state of the specimen, may 
probably be a Geoclemys. 
DescripTION oF A New Species or Macrurovus Decarop 
CRUSTACEAN BELONGING TO THE GENUS PENZUS, FROM 
THE Coast or PortuGaLt. By James YATE JOHNSON, 
Corr. Mem. Z.S. 
Penxus BocaGEl, sp. n. 
The subcylindrical carapace is less than half the length of the ab- 
domen, including the caudal segment, and is excavated at the middle 
of the posterior margin. A median crest commences near the poste- 
rior margin, and projects in front as the rostrum, which is more than 
half the length of the carapace. This rostrum extends much beyond 
the eyes, but not quite so far as the distal extremity of the peduncle 
of the superior antennee. It has a slight sigmoid flexure, is com- 
pressed, and is marked at each side with two low crests and two 
grooves. Its lower edge is simple; but its upper edge carries eight 
small teeth, the first of which is over its base, and the last some little 
distance from its anterior extremity. There is a fringe of hair at 
the lower edge posteriorly. The median crest of the carapace carries 
a single tooth, which is distant from the anterior margin about one- 
third of the length of the carapace. At each side of the carapace, a 
little in front of this tooth, there is a large tooth or small spine, in 
the neighbourhood of which there is a depression. Above the spine 
a narrow and somewhat sinuous groove extends nearly the whole 
length of the carapace. A little behind each anterior angle of the 
carapace there is another spine smaller than the one last mentioned. 
The anterior margin of the carapace is deeply excavated at the base 
of the inferior antennze, and between this excavation and the base of 
the ocular peduncle there is a strong sharp tooth or spine ; whilst 
over the base of the eye-stalk there is a minute angular projection, 
hardly to be called a tooth. The eye is large, being both broader 
and longer than its stalk. 
