475 
Rocks, classification of, 279. 
Rutaceae, 422. 
Sag Harbor, N. Y. Stone implements 
from, 405. 
Salpinctes obsoletus, nests of, 406. 
Salvia, 427. 
gesneriaefolia, 427. 
Henrii, 428. 
spleudens, 152, 427. 
Scolopendrella n. sp., 471. 
Scolecophagus cyanocephalus, 400. 
Scudder, S. H. Remarks on taking the 
Presidential Chair, 15; insect fauna 
of Florissant beds, 81 ; carboniferous 
centipedes, 82; on Lithosialis bohe- 
mica, 167 ; description of a carbonif- 
erous cockroach from Mazon Creek, 
111., 391; Euptoieta Claudia and 
Terias Lisa captured in Maine, 407 ; 
notes on Tertiary Neuroptera from 
Florissant, Col., and Green River, 
Wy. Ter., 407. 
Secretary’s Reports, 10, 186. 
Shaler, Prof. N. S. On the recent ad- 
vances and recessions of Glaciers, 
162. 
Shell-heaps, molluscs of, 307. 
Simia morio, 229. 
satyrus, 229. 
'wurmbii, 229. 
Smith, George D., death of, 51. 
Speotyto cunicularia hypogaea, 402. 
Spirodela polyrrhiza, 414. 
Spirorbis, fossil from ironstone nodule, 
111., 157. 
Spizella domestica, 399. 
pallida, 399. 
Sponges in the water supply of Boston, 
299. 
Strix nebulosa, 401. 
Sturnella neglecta, 400. 
Symphemia semipalmata, 404. 
Tadpoles. 105, 309. 
Temperature of Ponds and Lakes, 53. 
of Trees, 294. 
Terias Lisa, 407. 
Tinnunculus sparverius, 402. 
Trachyte of Marblehead, 288. 
Treasurer’s Reports, 13, 192. 
Trees, temperature of, 294. 
Trelease, Wm. Fertilization of Salvia 
splendens, 152; structures which 
favor cross-fertilization in several 
plants, 410. 
Trenton, N. J., Age of paleolithic gravels 
and paleolithic implements from, 124, 
137, et seq. 
Trichogramma, 37. 
minutissimum , 37. 
minutum, 37. 
Trogon, 21. 
exesorius, 21. 
Wadsworth, Dr. M. E. Age of the 
Copper- bearing rocks of L. Superior, 
39; on the filling of amygaloidal 
cavities and veins in the Keweenaw 
district, L. Superior, 91; appropria- 
tion of the name Laurentian by the 
Canadian Geologists, 121 ; on the 
paleolithic implements of the Dela- 
ware gravels, 146; a microscopic 
study of the Cumberland iron ore of 
R. I., 194; some points relative to the 
geological exploration of the Fortieth 
Parallel, 243; on the Trachyte of 
Marblehead Neck, Mass.. 288; lithol- 
ogy of Marblehead, 306; on Picotite 
from Mt. Shasta, Cal., 314; on the 
felspathic rock of Marblehead, 406. 
Westringia rosmariniformis, 429. 
Whitney, Dr. W. F. Note on a wounded 
skull from Coahuila, Mex., 300. 
Wolcott, J. Huntington, Gift from, to 
Libraiy Fund, 120. 
Wolffia, 415. 
Wright, Prof. G. Fred. On the age 
of the Paleolithic-bearing Gravels of 
New Jersey, 137. 
Xanthocephalus icterocephalus, 399. 
Zenaedura carolinensis, 402. 
Zircon syenite. 406. 
Zonotrichia albicolPs, 399. 
leucophrys, 399. 
ERRATA IN VOL. XXL 
Page 55, Table, for “ Jan. 2, 1878 read “ Jan. 2, 1879.” 
Page 71, line 5 for “ 3°. 9 ” read “ 2°. 09.” 
Page 89. Substitute for the first paragraph, beginning “ The dimensions of bulk ” 
etc., the following sentence: “ The differences between the circumferences of the shell 
and of the lobster after moulting (a), show that the animal’s girth has increased as 1.211 
to 1. The increase of girth is, therefore, about one-fifth.” 
Page 89, line 20, for “ 1 to 1.01 ” read “ 1 to .173.” 
Page 89, line 24 for “ bulk ” read “ circumference.” 
Page 89, line 26 for “ 5 23-32 ” read “ 6 23-32.” 
Page 88, line 6 from bottom for “o-16 ” read “6-16.” 
Page 225 and 227, in the explanation of figs. 2 and 4, for “ labrum ” read “labium.” 
Page 101, last line, for “ 1775 ” read “ 1875.” 
Page 235, lines 13 and 31, for “ Mikroskop. Beschr.” read Mikroskop. Beschaffenheit 
