510 Decapoda. — Brachyura. 



2. Subfam. Mithracinae Stps. Carapax late triaiigulus, iiiterduin trans- 

 versus, lateribus leviter arcuatis; spatium intei-orbitale augustuni; rostrum breve 

 aut obsoletum; articulus 2. antennarum II. non dilatatus; pedes I. di<iitis apice 

 excavati). 



Mithrax Leach {Maja Bosc). Caraijax rotniidaio-ovatu^, antc attoiuafus, 

 rostro hrevi bifido, margine dcntato aiit sjjinoso; maryo supcrior orbitae incisuris 

 duabm, intcr quas denticulus praeorbitalis acutus; spina cxtraorbitalis acuta; arti- 

 cidus 1. sfipitis antennarum II. fissuram internam orbitac prorsus cxplens, orbitam 

 sujicrans; artictdus 2. ah orbita rcmotus juxta rostrum oricns; di(jifi manuum I. basi 

 hiantes, ajiicc scsc tanffcntcs; aJjdomcn 7-se(/mcntatum. 



m 1. M. dichotomus Dksm. (Subgen. Hchizoiilm/s Stps., trianffularis M. 

 Edw. , var. dichotoma Xoss.m.j. Carapax triangulus longior quam latior; cornua 

 rostri acute conica ante directa, extra denticulo armata; margo lateralis praeter 

 dentem extraorbitalem spinis 6 — 7 niunitus; bracliium et corpus granulata, ma- 

 nus et difiiti laevia ; pedes sequentes pilosi, unguis infra sine spinis. Brunneus. 

 Long. 40 mm. 



Habit.: Litora insularum Balearicarum (H. M. Edwakds); Nizza (Targioxi- 



ToZZETTl). 



2. Tribus. Parthenopinea Miers (Daxa). Articuhis basahs antennarum II. 

 perparvus, cum articulo sequente in liiata angusto inter frontem et angulum in- 

 ternum suborbitalem positus. 



4. Fam. PARTHENOPIDAE Miers (Parthcnopiens et Canceriens crijjjfopodcs 

 M. Edw.). Ocuh plerumque retractiles in orbitas circulares parvas bene definitas, 

 pariete inferiore usque ad frontem producto; antennae graciles; articulus basalis 

 stipitis antennarum II. frontem non attingens, cum articulo sequente hiatum inter 

 frontem et angulum orbitae internum occupans. 



Subfam. Parthenopinae ^Miers. Carapax aequilaterus aut transverse trian- 

 gulus aut eUipticus; rostrum simplex, depressio distincta inter regionem branchia- 

 lem et cardiacam et gastricam; pedes I. aequi, manu trigona, digitis acutis. 



Lambrus Leach {Parthcnope Fabr.). Carajiax latcribus non diJatafis, acqui- 

 latere friatKjulus, rc<jionihus convexis, fuhcrculafus; articulus 1. stipifis anfcnnaruni II. 

 brevis frontem non affinjcns, articulus 2. hiatum orhifae cxjilcns; manus jjedum I. 

 carina tuberculosa aut sjnnosa in marjinc sujicriore, j?cdes I. plerumque permagni, 

 pedes gressorii fnrres. lacves aid spimdosi. 



1. L. Massena Roix (Parfhcnojje confracfa 'Costa, juv.: L. hexacanfhus 

 A. Costa). Carapax triaugulus, fere aeque longus ac latus, fere omnino laevis, 

 in regionibus convexis tubercula siiigula humilia; margo hiteralis in regione he- 

 patica et braucliiah serie denticulorum munitus; frons medio sulcata; pedes 1. 

 inaequales, brachio triquetro marginibus denticulatis, manu quadrangula, extremi- 

 tate incrassata, laevi, marginibus denticulatis ; pedes II. — V. sine spinis. Long. 

 16 mm, pedes I. 30 mm. 



Distrib. : Atlanticum; Senegambia. 



Habit.: Bone (Lucas); Jlarseille (Mariox); Napoh (Costa); Siciha: htus 

 orientale (Roux); Adria: Quarnero (Lobenz); Lussin grande (Gbure), pars meri- 

 dionahs (Steindachxer, Hei-ler). : — 45 — 70 m („Travaiheur", A. M. Edwards). 



m 2. L. angulifrons M. Edw. {Parfhcnope angulifrons Latr., P. longimana 

 CosTA, L. M(iiit(in(ii(l/s Korx, juv.: L. jiumilus Costa). A L. Massena differt 

 superficie magis tubciciilosa et ixMlibus I. longioribus spiuiscjue numerosis munitis; 

 rostrum acute triangulum; margiiies carapacis, pedes V. omnino et pedum reh- 

 (iuoiniii ungues pilosi. Longit. 27 mm. 



