210 Nachtrag. 



149) Lithocorythiiun cephahdes, (öub-l3-ar(ioul.) oMoiipum par- 

 vuili inermc. Artic. I hciuisj[iliaerico-CL'lliilo8Us. Art. II ovato- 

 oblongus area media lata liyaliiia, crucc media in 4 oelliilas divisa. 

 Artic. III brevis postice incresccus truncatus. Ceilulurum scriebua 

 transversis 3. Loiigit. -4*3^"', lat. max. ^g-'". 



150) Lithocürijthium ox)jlophos, (3-articul.) lacve. Artic. 1 

 liemisphaericus, aculeo forti armatiis, area media hyalina, custA 

 longitudinali divisa. Artic. II subovatus area media hyalina lata, 

 crate crucifornji in 4 cellulas divisa. Artic. III ovatus turgidiilug 

 subtruncatus , cellularum discretariim eopia pertu8U8. Longit. c. 

 acul. ^"', latit. max. ^"'. Cfr. Microgeologiae Tab. XXXVI f. 4. 



In alio specimine nianco capitulum majiis et poro.sum visuiii est. 



151) Lithocorythium j)lat)jlophos, (3-articuI.) hieve. Art. I Le- 

 misphaericus, aculeo frontali campanulato dilatato brcvi, basi porosa, 

 Cellulis 2 in parte media. Artic. II cellulis 4 niediis majoribus 

 instructus. Artic, III subovatus poris parvis sparsis instructus. 

 Long, -gly'", latit. max. ^^"'. Cfr. Microgeologiae Tab. XXXVI f. 3. 



152) Lithocydia Ocellus, disciformis niulti-radiata, capsuIa 

 media ampla nuclco ncbuloso, annulis 7 — 11 circumdata. In ra- 

 diorum et annulorum areoHs quadratis pori singuli, in capsulae super- 

 ficiei radios pororum abeuntes. Margo externus iiiaeqiiali» iner- 

 mis. Diam. -^^"\ capsulae ^^j-'", nuclei ^"'. In margine ferc 81> 

 radioli numerantur. In minore specimine in Microgeologiat; Ta- 

 bula XXXVI f. 30 picto G5 radii margina](;s adsunt. 



153) LithocycUa Stella, disciformis, 4 annulis mtdii - radialis 

 capsulam nucleatam cingentibus, limbo lato .spongiaceo radios amb- 

 eunte, aculeis fortibus brevibus (4) in margine irregulariter dispo- 

 sitis. Partis radiatae et capsulae pori sicut in priore seriati. 

 Diam. sine aculeis J"', capsulae ^"', nuclei -^"'. Long. acul. ^f/". 

 In parte media 4 — 5 annuli, radioli 45 numerantur. 



Astrommati affines plane circulares formae. 



154) Lithomelissa Capito, aspera biarticulata, articulis sul> 

 aeqiialibus, capite amplo inernii, cellulis irregularibus sub.seriatis, 

 articulo ventrali parum minore rotundato, aculeis curvis 2 parvis, in 

 parte anteriore strictura media distincta. Long. ■^"') capitis yy'", 

 aculei y.y. Latit. max. ^^"'. Cell, in ^V" 3—4. 



155) Lithomelissa Corythium, laevis. Artic. I latc canqianu- 

 latus tenuiter cellulosus diaphanus, fronte media spinulis tenuibus 

 armata. Artic. II levissime limitatus. 3 aculeis fortibus basi cellu 



