Mr. W. Thompson's Additions to the Fauna of Ireland. 243 



13. Gammarus punctatus, Johnst. Zool. Journ.vol.iii.pp. 177,490, 

 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. 



14. Opts 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 Algae brought up from a depth of fifteen to 

 twenty-three fathoms, where they grew on soft sandy ground — 

 several specimens procured on each occasion. 



A description of this species appears in Kroyer's ' Naturhist. 

 Tidssk.' 2nd binds, 1st haefte, 1846, p. 46. 



15. Anonyx (Kroyer), sp. 



Several specimens of an Anonyx of various sizes were dredged from 

 five to six 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, littoralis, ampulla, holbollii, plautus, Ed- 

 wardsii, tumidus — represented by Kroyer in such parts of the ' Scan- 

 dinav. et Lapon.' as were in the British Museum library in July 1 847 *. 



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 elegans) — by the following note : — length 

 of body 6 lines ; of upper antennae 1 line ; of lower antennae 4 lines ; 

 general colour yellowish pink ; eyes red ; lateral or abdominal plates 

 adorned with scarlet stellate markings, of which there are five or six 

 on those nearest the head : they become gradually fewer on those 

 towards the tail, so that not more than one appears on the hinder 

 plates. These markings render it very beautiful. My Anonyx is 

 distinct from a British species (locality unknown) in the collection of 

 the British Museum. As this is not included in the lately published 

 Catalogue of the Crustacea therein contained, the present is the first 

 notice of the genus as British. 



16. Anonyx, genus ?, 

 or rather a form between it and Stegocephalus, Kroyer, was dredged 

 from a depth of twenty- three fathoms (shelly sand) in Belfast bay 

 in Oct. 1846 by Mr. Hyndman. 



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

 come under my notice, and in it ten species of Anonyx, including the seven 

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

 A. minutus, and A. Vahlii. 



