39(5 CRUSTACEA. 



G. longimanus, Leach (sp.). Mcera lomjirnana. Leach MSS. 



A single one taken with last: — same as Leach's unique specimen in the 

 British Museum. 



G. punctatus, Johnst., 



I found in a case formed by itself among the branches of Corallina 

 officinalis growing in pools between tide-marks at Springvale, Co. Down, 

 in July, 1846. The species was determined by comparison of mine with 

 those from Berwick presented by Dr. Johnston to the British Museum. 



Geims Amphithoe. 



A.fncicola, Leach (sp.). 



Obtained many years ago at Youghal by Dr. Ball. Leach only appears 

 to have noticed this species : he remarks, " Habitat inter fucos in Dam- 

 noniae australis mari rarius." 



A. rubricata, ]\Iont. (sp.). 



Procured in Strangford Lough in Oct., 1839, by Mr. Hyndman and 

 myself. Li shallow rock-pools between tide-marks on the open coast at 

 Springvale, Co. Down, I obtained several specimens in July, 1846. Pre- 

 viously noticed only as found on the South coast of Devon by Montagu. 



AnijjJiithde, sp. 

 Bangor, Co. Down, 1835, AV. T. ; distinct from the preceding and A. 

 obtusata, on comparison with the specimens in the British Museum. 



Genus Opis. 



O. typica, Kroyer, Voy. Scandinavie et Laponie Crust., pi. 17, f. 1. 

 Dredged in Strangford Lough, Oct., 1839, and June, 1846 ; on the 

 latter occasion picked off algse brought up from a depth of 15 to 23 

 fathoms, where they grew on soft sandy ground — several specimens pro- 

 cured on each occasion. 



Genus Anonyx. 

 Anoni/x (Kroyer), sp. 



Several specimens of an Anoni/x of various sizes were dredged from 5 

 to 6 fathoms' depth — pure sandy bottom — off Bangor, Belfast Bay, in 

 July, 1846, by Mr. Hyndman and myself. They are distinct from and 

 more elegant in form, colour, and markings than any of the seven species 

 — A nanus, lifforalis, ampulla, holhollii, pliiufus, J^dicardsii, tumidus — re- 

 presented by Kroyer in such parts of the Scandinav. et Lapon. as were 

 in the British Museum Library, in July, 1847.* 



They are all plain or uniform in colour, while mine has conspicuous 

 stellate markings ; it is also of a somewhat deeper tint generally, and has 

 the antennae longer than any of those named. 



Although a proper description cannot (on account of the state of my 

 eyes) be drawn up, some idea may be given of this Anonyx — (which is 

 well worthy of the name of elcgans) — by the following note : — length of 



* Since the above was written, Kroyer's Naturhist. Tidssk.,for 1846, has come 

 under my notice, and in it ten species of A^ionijx, including the seven already 

 named, are described (in Latin) : the additional species are A. gulosus, A. 

 minutufs^ and A. Vahlii. 



