1863.] SALTER CRUSTACEAN FROM GLASGOW. 521 



The appendages are well preserved, both inner and outer antennae 

 at least ; and the latter, strange to say, are smaller than the anten- 

 nules*. Both have widely expanded basal joints, with short spines 

 overhanging the front border of the carapace. The antennules 

 (fig. 2, a) have atfirst/owr large joints : the first is narrow ; the second 

 almost square, with a projecting subspinous outer angle; the third tri- 

 angular; the fourth broader at the base, wider than long, and followed 

 by a single, long, filiform appendage of short close joints. The antennae 

 (fig. 2, b) — for they cannot be the interior pair pushed outwards by 

 pressure — have also broad basal joints, three in number, but not 

 more than half the diameter of those of the antennules. The basal 

 joint is broad, the next longer than wide, the third wider than long, 

 and bearing two filamentary antennae, with some remnants of the 

 protecting scale (c). The latter is small and not very definite; the 

 filament is more slender than that of the antennule, but double, and 

 of longer joints. As I have not seen more of any of the filaments 

 than 3-10ths of an inch, nothing more can be said of them. 



But there is enough of this beautiful Crustacean to show that it 

 belongs to Palceocarabus, and not to Anthrapalcemon, and to show 

 also that the genera may be now more clearly defined. In addition 

 to the characters given in my former paper f, I have to add that 

 Anthrapalcemon has the antennae with large basal joints, the anten- 

 nules with small joints, the carapace with but a faint cervical furrow, 

 and the ridge incomplete. 



Palceocarabus has the antennae smaller than the antennules, but 

 with expanded basal joints (and the usual scale of the Palcemonidce), 

 and the antennules with broad large basal joints; the cervical 

 furrow and carapace-ridge are complete. 



The species just described is certainly new ; and I have great 

 pleasure in dedicating it to Mr. J. Russell J, of Chapel Hill, Airdie, 

 who kindly forwarded the specimen to me. 



Addendum. 



Macrura in Bohemian Coal. — Since this paper was read, my friend 

 Mr. H. Woodward has shown me two specimens of a Macrurous 

 Crustacean from the Upper Coal-measures (overlying Lower Silurian 

 rocks) of Beraun, Bohemia. They show the five pairs of limbs and 

 the bases of the maxillipedes, with the terminal portions of the ab- 

 domen ; but they are too imperfect to prove the exact nature of this 

 latter portion. Both specimens expose only the ventral surface, 

 and both are so flattened as to be little more than black stains in a 

 brownish-grey schist. The chelae are small ; and from the general 

 aspect of the fossils, I should think them Palcemonidce rather than 

 Astacidce. The surfaces are covered with tubercles. — [J. "W. S.] 



* In Thenus and such genera the outer antennae are largely expanded, but the 

 antennules are very small in comparison. 



t Loc. cit. pp. 529, 530. 



X Formerly of the Borneo Antimony Company. 

 VOL. XIX. PART I. 2 N 



