561 



fanalen. Sflunbaaonutgcn cr enten pact TOtbtcn af Unbcrffabett 

 cfler enbog ba<jt>eb famme. ©om djaraftcrtjttff for bcnne 21f* 

 beltna, maa oajaa ncconeS en fjanffc etcnbommelta, Ubortlma, af 

 Sttuflflcrne paa ben forrejte £>eel af ftroppen. gfcre SttufM* 

 ounbtcr ere tcet forenebe t CEnben af £ooebet, men bele fig 

 bcrpaa t to ftjebcr, af tyotlfe ber lofcer een paa $»er ©ibe af 

 Svroppcn omtrent neb til 9D?tbten, tyoor be Itbt efter Itbt tabt 

 fuj. Jpscr enfclt 2)hfTelouttbt foneS at ocere omgtoen af en 

 ajcnncmftjjtta, Sfebe, ber i recjelmceoftge Slfjhnbe er forfynct meb 

 3nbfncrut3er. £eroeb opflaae fcerflt'Ue 9hm, $oori be cnfelte 

 SDcuftVlftbre Itgrje fom folformebe Segemer, ber bog oeb en me* 

 (jet tpnb gorfottflctfe fpneS at jtaae t gorotnbelfe meb tymanben 

 ajennem be forftjefltge dtum. 



Gen, Mesostoma Dugcs. 



Corpus depressum pellucidum, apertura oris paulo supra 

 medium vel in medio corpore, ore annuliformi rotundo, oculi 

 duo approximati ab apice quarlam vel quintam corporis par- 

 tem rcmoti. 



Mesostoma Ehrenbergii Orsd. 

 Planaria lingva. Zool. Dan. T. 105. 

 Planaria grossa? ibid. 

 Planaria tetragona. Zool. Dan, T. 106. 



Planaria Ehrenbergii Focke. 2lnnctlcn beg Stener»$?ufcum$ Vol. 

 1. Tab. XVII. 



Corpore 4 — 5'" longo, depresso, elongato-elliptico, hyalino, 

 fnscescenlc ; oculis nigris, ab apice quartam corporis partem 

 remotis; apertura oris paulo ante medium corpus; penis cy- 

 liodrid parte interior* glandulosa, posteriore rugosa. 



2)cnnc ?lrt fyenfjerer til be fact, font ere Mesne unberfa* 

 ftebe en notagtuj mtfrojtoptj! Unberftgelfe, nemluj af gocfe 

 (loc. cit.). £an amjtoer, at ben ij/enucntrjaacr en bctobclta, 

 s D?ctdtnorpt)ofe; men jea, $ar oftc feet ben fobe leoenbe linger, 



ytaturl).fioriff IiWf?rift IV. 3f, 



