C. Spence Bate on the Penwidea. 185 
more abruptly than it appears to do either in S. membranacea 
or the specimen preserved as the type of Lucas’s species. 
Solenocera crassicornis, Milne-Kdwards. 
The specimen is labelled “ Bombay,” and corresponds with 
the author’s description, to which may be added the presence 
of four teeth that are to be found on the anterior extremity of 
the carapace, and are of generic value. 
There are specimens from the sea between Borneo and the 
Philippine Islands, taken at 250 fathoms, in the ‘ Challenger’ 
collection; and Sir Walter Elliot has taken it at Waltair, on 
the Madras shore of India. 
Solenocera Lucasti, n. sp. 
Rostrum short and with seven teeth, of which the last two 
are more distant and situated above the gastric region. Hye 
not large; larger branch of flagella of first pair of antennz 
tapering ; posterior pair of pereiopoda long; dactylus com- 
pressed. ‘Telson shorter than the inner plates of the rhipidura. 
Length 3 inches. 
Taken south of New Guinea at about 130 fathoms. 
HALIPORUS, n. gen. 
General appearance more slender than Solenocera, appen- 
dages longer and more slight. Second pair of gnathopoda as 
long as and stouter than the pereiopoda. Flagella of the first 
pair of antenne long, subequal, cylindrical. T'elson long and 
natrow, laterally compressed. 
Haliporus curvirostris, n. sp. 
Carapace covered with minute spines; dorsal median line 
dentate. Rostrum curved, being posteriorly and anteriorly 
depressed. Telson armed with two or three small teeth at the 
sides. 
Length about 3 inches. 
Taken in mid Pacific at 2375 fathoms. 
Haliporus levis, nu. sp. 
Having no lateral teeth on the carapace, six teeth on the ros- 
trum, and two on the gastric region. Rostrum straight. 
Length about 2 inches. 
- Taken in mid Atlantic at a depth of 2500 fathoms. 
Haliporus neptunus, n. sp. 
Carapace smooth. Rostrum armed with six teeth, and two 
Ann, & Mag. N, Hist. Ser. 5, Vol, viii, 13 
