274 Mr. W. Thompson on the Crustacea of Ireland. 



non angustius ; segmentum l um maximum: pedes flavi, simplices, sub- 

 sequales : alae limpidse, mediocres ; squamulae picese ; nervi fulvi ; nervus sub- 

 costalis alae basi emissus nervulum in discum rejiciens et spatio brevi ante 

 costse medium in stigma subfurcatum decedens : nervus quoque spurius alae 

 basi emissus in discum excurrens et nervo subcostali nervuloque triangulum 

 fingens. (Corp. long. lin. f ; alar. lin. 1.) 



Romilius (n. g. *) Zotale, Fern. Ater, antennae nigrce basi fulvce, pedes 

 fulvi, alee limpidce. 



Corpus longum, angustum, sublineare, atrum, vix convexum, obscurum, 

 pilis canis pubescens, subtilissime et confertissime punctatum : caput trans- 

 versum, breve, subrotundum, thorace vix latius; vertex latus; frons con- 

 vexa, non impressa : oculi parvi, non extantes : antennae nigrae, graciles, 

 subclavatae, prope os insertae, thorace non breviores; articulus l ns longus, 

 subfusiformis, fulvus; 2 US longicyathiformis ; 3 U * et 4 U * longi, lineares; 5 US 

 et sequentes ad 10 um breves, approximati, clavam fingentes longifusifor- 

 mem : thorax longiovatus : prothorax brevissimus, postice excavatus : me- 

 sothoracis scutum magnum, trisulcatum, longitudine vix latius; sulci latevales 

 postice approximati; scutellum parvum, semicirculum fingens : metathorax 

 mediocris, obconicus : petiolus brevissimus : abdomen longifusiforme, subtus 

 convexum, apice acuminatum, thorace multo longius ; segmentum l um breve; 

 2 u m et 3 um ma g na . 4«m et 5 um paullo breviora ; 6 um adhuc brevius : pedes 

 fulvi, longi, graciles, simplices, subagquales ; tarsis articulus l u * longus, 2 uS 

 multo brevior, 3 ns adhuc brevior, 4 US 3° brevior, 5 US 4° paullo longior : alae 

 mediocres, limpidae, abdominis apicem dum quietem agunt non attingentes ; 

 squamulae fulvae ; nervi fulvi ; nervus subcostalis alae basi emissus ad eostae 

 medium earn attingens et fere ad alae apicem percurrens; nervus 2" 8 quoque 

 alas basi emissus in discum excurrens ibique furcatus, furca antica nervo 

 subcostali triangulum fingens, furca postica ad alae marginem posticum de- 

 cedens ; nervus cubitalis rectus, sat longus, nervo subcostali ubi costam at- 

 tingit emissus, stigmate terminatus minuto. (Corp. long. lin. If ; alar. lin. 



3*0 



[To be continued.] 



XL. — The Crustacea of Ireland. Order Decapoda. By Wm. 

 Thompson, Esq., Vice-Pres. Nat. Hist. Society of Belfast. 



CRUSTACEA. Order Decapoda. 



Decapoda Brachytjri. 



Macropodia phalangium, Leach, Mai. pi. 23. f. 6; Desmar. p. 155. 



pi. 23. f. 3. 

 Stenorhyncus phalangium, Edw. Crust, tome i. p. 279. 

 Cancer phalangium, Penn. Brit. Zool. vol. iv. p. 11. pi. 9. f. 3, edi- 

 tion 1812. 



This species has already been recorded by Templeton as " not un- 

 common on the Irish coast," and by Mr. J. V. Thompson as " very 

 abundant in the deep water of the harbour of Cove." Ent. Mag, 

 vol. iii. p. 371. 



It has occurred very commonly to my scientific friends and myself 

 when dredging in the loughs of Strangford and Belfast ; and to Mr. 



* Scelio Duris (Monogr. Chalcid., ii. 61.) also belongs to this genus. 



