Peltogastridae. — Caprellidae. 387 



1. Tribus. Laemodipoda Latr. 



Segmentiim primuiu tlioracicum cum capite coalitum, inde par I. pedum fere 

 jugiilare; maxillipedes labiuni quadripartitum palpis longis praeditum formantes; 

 sacculi brancliiales plerumque tantum in segm. III. et IV., pedihus rudimentaribus 

 saepe nullis; pedes uncinis terminati; abdomen rudimentare absque appendicibus. 



1. Fam. CAPRELLIDAE M. Edw. Corpus elongatum, lineare, cylindricum; 

 pedes longi graciles. Inter pLantas marinas vitam degunt. 



Proto Leach {Lcptomera Late.). Corpus valde elongatum, segmento ultimo 

 flioraraU brevi; mandibulae palpo praeditae; pednm paria septem forma diversa, duo 

 anferiora regtdaria, pedes sequenfcs minores, par V. fere rudimentare , paria duo 

 ulfima ma.rima; branehiarum. paria tria, in segmenfis fhoraealibus II. III. et IV.; 

 ahdomen friarficulafum, pedum paribus duobus biarticidafis rudimcnfaribus. 



1. Pr. ventricosa Meineet {Squilla ventricosa 0. F. MuLii., Pr. pedata 

 Flem., Lcpitomera pedafa GrufiB.). Segmentum primum postbrancliiale reliquis lon- 

 gissimum; corpus laeve; manus margine utroque convexo, margo palmaris antice 

 absque tuberculo, postice processibus spinosis parvis; par brancliiaruin I. minus, 

 II. et III. majora. Long. corp. 10 mni. 



Distrib.: Litora Daiiiae, Angliae, fretum Britannicum. 



Habit. : Marseille, Villafranca (Haller); Cagliari (Emeey); Lipari, Messina, 

 Xapoli (Hallee, Mayee); Adria: Trieste (Gameoth). 



m. 2. Pr. brunneovittata Hallee. Manus paris pedum II. maxima, in 

 raargine palmari tuberculis tribus rotundatis et basi proxime processibus spinosis 

 armata, hic macula fusca notata; articulus 3. ejusdem pedis processu magno por- 

 recto; branchiae parvae retro decrescentes, ultima fere rudimentaris ; segmenta 

 omnia thoracalia fascia lata brunnea. Pr. ventricosa major. 



Habit. : Messina, portus, 150 m prof. (Hallee). 



Protella Dana. Segmenta fhoracalia postcriora compacta; pedum paria per- 

 fccta quinqiie et duo rudimenfaria ; branchiae in segmentis tantum thoracalibus III. 

 et IV.; abdomen biarticidatmn, sine pedibus, tuberculis sctosis; palpus mandibidaris 

 friarficulcUus; autennae II. JiageUo biarticidato. 



1. Pr. phasma Bate & Westw. {Cancer phasma Mont., Caprella phasma 

 Late., C. quadrispinis Geube, Pr. major Hallee, 6). Corpus 8 — 10 mm long., 

 manus paris II. in c? aetate provectioribus niaxima, in processum magnum obtusum 

 distalem producta ; caput processu spinoso , thoracis segmentum I. spina impari. 



Distrib. : Mare Britannicum, Mare rubrum. 



Habit. : Marseille (Maeion); Villafranca (Hallee); Cagliari (Emeey); Mes- 

 sina, Scilla (Haller); Napoli (Posilippo, Ischia, Ventotene, AmaM) (P. Mayee); 

 Taranto (0. G. Costa); Adria: Trieste (Gameoth), Lesina (Hellee). 



Caprella Lam. Segmcnta fhoracalia postcriora compacfa, anteriora elongata; 

 pcdes anteriores solito formati, par III. et IV. (segmentorum thorac. III. et IV.) 

 nulla, sequenfia ptaria tria margini posteriori segmentorum inserta, 5-articulata ; bran- 

 chiarum paria duo; abdomen triarticulatum, S unico pedum pari mmiifum; mandi- 

 bufae sine palpo. 



* Antennae II. setis sensoriis obsitae; S elongatione partis auterioris cor- 

 poris a $ diversus. 



1. C. acanthifera Leach {C. acuminifera Latb. , M. Edw. , C. Fabris 

 Nabdo, C. armata, aspcra Hell., C. lepton>/x Hell., juv. , C. antennata Hall., 

 C. elongcda Hall., var. Jaevis, C. fcrox Czebn.). Corpus gracile, c? ad 10 mm, 

 5 8 mm longum; par pedum II. in S adulto in medio, in ^ in parte antica seg- 

 menti insertum; manus pro sexibus diversa; dorsum segmenti II. (pediferi II.) 



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