82 
CUMMINGS 
Z. epiphcea Nyl., Z. ramulosa Fr., Z. atrorufa Ach., L. sanguine- 
oatra (Fr.) Nyl., Z. pallidella Nyl., Z. ternaria Nyl., A. subal- 
linita Nyl., while Z. tor?ioensis Nyl. was collected at both localities. 
In the second group are two species collected at Port Clarence on the 
earth or on moss : Z. muscortan{ Sw.) Nyl. and Z. subftiscula Nyl. In 
the third group only two species are represented, one, L. fecunda Fr. 
fil., collected on earth and moss at Port Clarence, the other, Z. pezi- 
zoidea Ach., found in similar habitats both on St. Lawrence Island 
and at Port Clarence. The fourth group is also represented by two 
species—Z. limosa Ach. and Z. dovrejisis Nyl., the former on earth, 
the latter on rock, at Port Clarence. In the fifth group are the follow- 
ing specie s : L. stibnegaiis Nyl., Z. Candida Ach., Z. parase?na , 
forma euphora Flk., and L. i?icongrua Nyl. The sixth group in¬ 
cludes : Z. tenebrosa forma subsparsa Nyl., Z. laurentiana Nyl. 
Z. brachyspora Fr., growing on rock on St. Lawrence Island ; Z. con- 
tigua forma ?neiospora Nyl. and L. crustnlata (Ach.) Nyl., on rock, 
collected at Port Clarence. Of the seventh group there is only one 
representative — Z. disciformis forma insignis Naeg. There are 
three representatives of the eighth group : Z. jemtlandica (Fr. fil.), on 
earth, St. Lawrence Island; Z. atroalbens Nyl., on rock, St. Lawrence 
Island; and Z. chionea Norm., on rock, Port Clarence. In the ninth 
group the following species are included : Z. confervoides (DC.) 
Nyl., L. atroccesia Nyl., Z. geminata Flot., L. exceittrica Ach., the 
first three on rock on St. Lawrence Island, the last one on rock at Port 
Clarence. The tenth group is represented by Z. alpicola Schaer., 
growing on rock on St. Lawrence Island. The eleventh group con¬ 
tains one species—Z. rhexoblephara Nyl., which was found on earth 
on St. Lawrence Island. In the twelfth group are Z. sangninaria 
Ach., growing on the earth on St. Lawrence Island, and Z. affinis 
Schaer., growing on the earth on St. Lawrence Island and at Port Clar¬ 
ence. The thirteenth group is represented by Z. paraphanella Nyl., 
on rock from St. Lawrence Island. The following species are given in 
the body of the text, but not arranged in the foregoing groups : Z. as- 
sociata Fr. fil., Z. hypopodia forma subassimilata Nyl., growing on 
the earth on St. Lawrence Island, and Z. scabrosa Ach., growing 
on the earth at Port Clarence. In addition to the list based upon the 
specimens collected by Dr. Almquist, Nylander revises Rotlirock’s 1 
list with the following changes : Z. spilota Fr. = Z. plana Lahm.; 
Buellia petrcea= Lecidea ge?ninata Flot.; Z. enteroleucodes Nyl. 
1 Rothrock, Dr. J. T. List of, and Notes upon, the Lichens collected by Dr. 
T. H. Bean in Alaska in iS8o. Proc. U. S. Nat. Museum. 18S4. 
