Calceola sandalina , both by its generic and specific name, means a little shoe or slipper. It is a common fossil in the Devonian rocks of the Eifel and other continental localities, and was found years ago by Mr. Godwin-Austen at Ogwell, near Chircombe Bridge, in Devonshire.
The small crustaceans which form tho subject of the present report, when entrusted to wy examination by Dr. G. H. Fowler, were contained i n 121 tubes, and have proved to lxlong to 29 distinguishable, if not in every case determinable, species.Four of tlicse tire Amphipoda Gammaridea, nineteen Amphipoda Hyperiidea, two Claclocera, two Ostracoda (discussed elsewhere), one the larva of a Cirripede, and one an Isopod, probably belonging to the genus Eurycope, but too fragmentary for determination.One of the Gammarids, though clearly distinct from the rest, was too impevfect for description.Of the remaining Gammarids one is a very common and one a rare species; the third is new and supplies the representative of an interesting new genus.Among the Hypmiids tlie family ScinidE is represented by no less tliriii eight species, two of tlicrn requiring the institution of new genera.I n the family of the IIyperiidic, Zyperioides ZoizgZpcs, Chevreux, calls €or special remark.It far exceeds in the number of its occurrences and in number of specimens any other species of Aniphipocla in this collection.Yet this apparently common form was not described, at any rate from the Atlantic, until tlie year 1900.To the description by Chevreux speedily followed an obviously independent account by Dr. Voeseler, and now i n quick succession the same species appears as a predominant constituent of Dr. Fowler's collections.The present opportunity has been taken for making more generally known the characters of the juvenile Primno among tlie Hyperiids, and t h o external appearance of the Cyp1*islarva of Lepas pectiizata among the Thyrostraca.
Ortmann defines this family as follows :-'' Inner antenne longitudinal.Outer antenne occupying the interior hiatus of the orbits, their second joint cylindrical, just reaching the front, the third joint only a little smaller ; flageilum hairy.Cephalothorax rounded, not widened, antero-lateral margin at least as long as the postero-lateral."He places it among the Cancrini, his second subsection of the Cyclometopa, which in his system form the second section of the Cancroidea, these latter being the second subdivision of the [2