a 
Noduli terminales maximi. Longit. 0,005—0,009. Hab. in 
oceano pacifico boreali. 
 Climacosira nov. genus. Frustula tabulata rectangula, in 
fascias conjuncta, dissepimentis numerosis irregulariter scalari- 
formibus instructa, valvis linearibus, costalis (?). 
Climacosira mirifica (W. Smith). Climacosira major, 
valvis linearibus et dıssepimentis evidenter striato punctalis, 
striis 24 in 0,001”, dissepimentis alternalim medium versus 
interruptis. Longit. valve 0,0028 — 0,007”, latitud. valve 
0,0003—0,00035”, latid. frustul. 0,0032— 0,00938”. 
Striatella camtschatica nov. spec. Striatella minor, 
dissepimentes plerumque 8, valvis late lineari oblongis apieibus 
rotundatis, striis punctatis 42—45 in 0,001, nodulis termina- 
libus maximis,. Longit. valvarum 0,0007”— 0,0016”, latid, valv, 
0,00025-—0,0004”, latid. a latere primario : 0,0008”— 0,0004”; 
latid. a latere primaorio: 0,0008” —0,0012”. Hab. in marı 
Kamtschatico aliıs algis insidens. 
Campyloneis nov. genus. Frustula scutelliformia Lrans- 
verse arcuala adnata, valvis heterogeneis, inferioribus costatis, 
superioribus insigniter cribroso punetatis, nodulis nullis. 
Campyloneis Argus nov. spec. Campyloneis a latere 
secundario late ovalis vel orbieularis latere primario anguste 
linearis, valvis inferioribus eoncavis costatis, coslis radiantibus 
lineam mediam undulatam attingentibus, 3—5 in 0,001”, strüis 
punctalis 30 in 0,001”, valvis superioribus convexis insigniter 
seriato punctalis, punetis majoribus oblongis S—10 in 0,001”, 
area media levi lineari lanceolata. Longit. 0,0016—0,0037, 
latid. valvarum 0,0019’—0,0025”. Hab. in Oceano atlantico 
boreali, Dasyam coccineam a litoribus Islandie densissime ob- 
legens. 
Campylodiseus minutus m. Campylodiscus parvus orbi- 
eularis valde flexuosus area levi (subtillime punelala) quadran- 
gulari dimidium fere valvie diametri occupante, linea media nulla, 
costis radiantibus 18—20 in 0,001°°. Diametr. 0,0014”. Hab. 
in mari adrialico rarissime (Meeresgrund von Porto piccolo bei 
Gaftel mufchio, Cystosiretum 5—7 Faden tief, leg. Dr. Lorenz). 
Campylodiscus adriaticus nov. spec. Campylodiseus sub- 
orbieularis, valde flexuosus, costis radıantibus marginem versus 
bifidis, brevibus 7—8 in 0,001, interstitiis subtiliter punctatis, 
area media subquandragulari maxima plieis duobus curvalis 
instructa. Diam. valvae 0,0024 — 0,0034”. Hab. in fundo 
maris adrialici. 
Campylodiscus exiguus nov. spec. Gampylodiseus minu- 
tulus orbieularis, costis abbreviatis radiantibus 8 in 0,001”, area 
media orbiculari seriebus duabus striarum punctatarum paralle- 
