Planoceridae. — Leptoplanidae. 151 



Habit. : Adria: Trieste, inter Ulvas (v. (traff). 



2. Fam. LEPTOPLANIDAE (Stimps.) Lang. Tentacula nnlla; os infernm, 

 cnm pharynge in media corporis longitndine ; ocnli nnmerosi , in acervnlos dnos 

 laterales (loco tentacnlorum absentium) et internos ad areas cerebrales ordinati, 

 saepe inarginales; apparatns mascnlinns retrorsnm directns. Metamorpliosis nnlla. 



Discocelis Ehbg. , Laxg. [Ccnfrostomum Dies. , Lepfoplana, Elasmodcs, 

 Folycclis ant. p.). Corpiis Jafc ocafuni; os mcdlum auf pauUo anfc mediiim, htirsa 

 pliarynfjca Ijursis loni/is infcrdunt ramnsis acccssoriis ; aperfura r/cnifalis communis 

 singula ; pcnis inarmafus; organa feminina ccsica acccssoria (/landulosa ; omli mar- 

 f/inis anfici re(jioncm ccrchri cxccdenfcs. 



^m 1. D. tigrina Lang {Polycclis fitjrina Blaxch., Lepfoplana tijrina Dies., 

 Elasmodes titjrintis Stimps.). Corpns ad 40 ram longum, 25 mm latnm, solidum 

 opacum, late ovatum, antice paullo latins, sordide rnbro-fnscum, supra punctis aut 

 macnlis fnscis adspersum; areae tentacnlares acervo 20 — 25 ocnlornm majornm, 

 minoribns singulis interpositis, areae cerebrales utrinque 30 — 40 oculis aggregatis 

 mnnitae, ocnli marginales, in anteriore tertia corporis parte, serie triplici indis- 

 tincta ordinati. 



Habit. : Gfenova, portns (Blanchard); Napoli: Molo, Sta. Lncia, Castello 

 deir uovo, Secca di Gajola, di Benda Palnmbo (Lanu). 



Cryptocelis Lax(;. Corpus ocaitnn, stjlidtmi; t)s mcdiunt; hursae acccssoriac 

 phart/nifcae numerosac; aperfurac t/cnitalcs scparafac, haiul procid ah cxtrcmUcde cor- 

 poris posfica;penis niafjnus inarmcdus, cesica glandulosa ad vasa dcferentia, vesica 

 scminalis nidla; organa feminina sine hursa copidatrice et vesicci accessoria; octdi dis- 

 persi. fcnfacularcs iton distincti, margintdcs circum corpus ftjfum. 



m 1. Cr. alba Lang. Corpns 40 mm et ultra longnm, ad 20 nnn latnm, 

 fere opacum, lactenm, snpra nebnlosnm, margiue panllo pellucens, organa in parte 

 anteriore et infera translucentia ; oculi minimi , lente simplici adhibita vix dis- 

 cerni possunt, 



Habit. : Xapoli: Posilipo, Mergellina, Chiaja (Lanct). 



m 2. Cr. compacta Lang. Corpus ad 30 mni longum, .13 mm latum, 

 solidnm, opacum, antice acnte attennatum, sordide albidnni, snpra rnbro ant fnsco 

 suffusnni, infra sordide album ; oculi uti in Cr. alba. 



Habit. : Xapoli: Posilipo, Mergellina, Chiaja (^Laxg). 



Leptoplana Ehbg. , Lang {PolyccUs Qtkfgs. , Elasmodcs Stimps. , Cen- 

 trtjsfimtunt Dies.). Corptis patdlo solidum, elongafum, htirsa phar/jngea saccis acces- 

 soriis )iumcrosis hrecibus; ajjcrturae gcndalcs scparcdac, admodum ah cxtrcmitate posfica 

 corporis rcmotac ; organa masctdina glandula granigcita ct ccsica seminali; oculi 

 ntiitorrs iit arca ccrchrali, majores iii area fentactdari, margiiudcs nulli. 



1. L. tremellaris Oerst. (Planaria trcmcltaris 0. F. M. , Pl. jiexiUs Dal., 

 Leptoplana hgalina EHnc;., Polt/cclis lacvigcda Qtfgs., L. laccigata Dies., X. Jtexdis 

 DiES.). Corpus planum, ellipticnm, antice latins, 12 — 22 mm longnm, 4 — 8 mm 

 latnra , sordide fnsco-albidum ant fnscnm , medio nigro-fuscuni ; organa genera- 

 tionis ab extremitate postica valde remota , feminina pone ipsa raasculina ; inter 

 aperturas acetabulum adest; ocnli areae cerebralis profnndius positi utrinqne 20 — 25, 

 arearum tentacularium circiter 6 majores et 3 — 6 minores. 



D i s t r i b. : Maria europaea. 



Habit. : Palermo (Grube) ; Napoli, Capri (Lax(;); Adria: Trieste (Grube), 

 Argostoli, sinus in insnbi Cephalonia (0. Schmidt). 



nt 2. L. Alcinoi O. Schm. {Opisfhopurus fergcstintis Minut). Corpus extensum 

 ad 25 ram (14 — 18) longum, 4 nim latnra, antice rotundatum, postice paullo atte- 



