308 A HISTORY OF RECENT CRUSTACEA 
For Sars’s Petaloméra, 1882, and Petalépus, 1865, both 
preoccupied, I propose Petalosarsia. It has no eye. The 
last segment of the trunk is firmly united to the preceding. 
The first pereeopods are devoid of the seventh joint and 
have the so-called merus or fourth joint like a petal or 
leaf, an expansion which is unique. There are no rudi- 
mentary exopods on the third and fourth pleopods of the 
female, nor rudimentary pleopods on the second to the fifth 
pleon-segments of the male. The single species is Petalo- 
sarsia declivis, Sars, from the Lofoden Islands and Spitz- 
bergen. It has been recently taken in the Firth of Forth. 
Strauchia, Czerniavsky, 1869, is described as having 
exopods on the second and third pereeopods in the female, 
and none on the first, which would require for it the 
institution of a separate family, Strauchide. But pro- 
bably allowance should be made for some mistake in the 
description, as the single specimen of the single species, 
Strauchia taurica, Czerniavsky, is said to be about a 
twenty-fifth of an inch long! A small distinct telson is 
attributed to it, which rather points to its position among 
the Pseudocumide, but this species from the Black Sea is 
at present involved in obscurity. 
Family 7.—Lampropide. 
The first antenne have both flagella well developed 
and nearly equal. The flagellum of the second antennze 
in the male is composed of many short joints. The epipod 
of the first maxillipeds has few finger-shaped branchial 
sacs. ‘The first two pairs or only the first pair of perso- 
pods in the female and the first four pairs in the male 
have well-developed swimming-branches. In the male 
there are three pairs of pleopods or none. The branches 
of the uropods are very slender, the inner three-jointed. 
The telson is distinct, with three or more terminal spines. 
There are five genera. 
Lamprops, Sars, 1863, meaning ‘ bright-eyed,’ has the 
flagellum of the second antenne in the male relatively 
short and prehensile; the third and fourth pereeopods in 
