hy Mr. Barlee in the Shetland Islands. 357 



It is rather curious to remark^ that in the two standard works 

 on British Crustacea, Dr. Leach's ' i\Ialacostraca Podophthalniata 

 Britannije/ and Prof, BelFs ' Hist, of the British Crustacea/ 

 tlu^ artists employed have incorrectly figured the female abdo- 

 iiun in the genus Ebalia by the omission of the seventh and 

 ultimate ring, — an articulation so peculiar as to have been 

 ch.ssed by each author among the generic characters, — while in 

 till' text it is correctly described by the resjiective authors. This 

 ciicumstance, together with the peculiar manner in which it is 

 imbedded between the base of the pedipalps, has induced me to 

 forward a figure of the underside of Ebalia Pennan/ii as wxll as 

 the unattached abdomen (PI. V. B. figs. 2 & 3). 



Scarcely knowing which to trust, the more so since it is omitted 

 in the description of the genus in Prof. Milne-Edwards's ^ Ili- 

 stoire des Crustaces/ I communicated, for the purpose of being 

 certain, with Mr. Gray of the British jMuseum, where I believe 

 the original specimens of Dr. Leach are preserved, who with 

 courtesy immediately replied, and thus strengthened me upon 

 the point. 



The only other of the above list to which it is at all necessary 

 to allude, is that which I have taken upon myself to name Hip- 

 polyte Barleei, after him to whose labours we are indebted for 

 the discovery. (See PI. V. B. fig. 1). 



It has the rostrum one-third the length of the carapace, the 

 front slightly turned up ; the loAver margin smooth, the upper 

 armed with four teeth, the two centre of which are partially 

 confluent. 



Unfortunately the specimen is not too well-preserved as a 

 whole, the sixth pair of legs being lost when I received it, and 

 also one of the anterior pair, together with the antennse, all of 

 : which are broken off to the peduncle ; it may therefore be con- 

 I sidered rash to describe the specimen as belonging to this genus ; 

 but as far as research has yet carried us, the rule, that when the 

 I first two pair of legs arc cheliform, with the first pair short, 

 strong, and apparently useful (not slender as in Palcemon), the 

 internal antennae are furnished with two set^e, is so constant, 

 that until a more perfect specimen be dredged, an opportunity 

 for which may not again readily occur, since the Ilaaf (or deep- 

 sea fishing) is, I believe, forty miles distant from the nearest 

 point of land, or a distinct species be found showing the above 

 rule to be inconstant, I think we are justified in supposing it to 

 be a Hippolyte. 



The specimen is small and rather greenish, but colour among 

 Crustacea can scarcely be depended upon, it being dead. 



Mulgrave Place, Plymouth. 



