Parr 5, 1916] AGARICACEAE 317 
30. Omphalopsis cuticolor Murrill, sp. nov. 
Pileus convex to plane, slightly depressed at the center, solitary, 2 cm. broad; surface 
striate, dull-rosy-isabelline, hygrophanous at the center: lamellae decurrent, broad, distant, 
interveined, whitish: spores ovoid, much pointed at one end, smooth, hyaline, 5-7 X 3-4 u: 
stipe cylindric, equal, slightly enlarged above, smooth, glabrous, concolorous, about 3 cm. 
long and 1 mm, thick. 
Type collected on buried dead wood in a moist virgin forest at Motzorongo near Cordoba, 
Mexico, 1500 m. elevation, January 15, 1910, W. A. & Edna L. Murrill 1014 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. 
31. Omphalopsis roriduliformis Murrill, sp. nov. 
Pileus thin, fleshy, hemispheric, cespitose, abundant, 1 cm. broad; surface dry, glabrous, 
finely roughened, pale-isabelline, margin entire, concolorous, appressed when young: lamellae 
decurrent, broad, subdistant, ventricose, watery-whitish: spores subglobose, smooth, hyaline, 
minute, apparently immature, 2 u: stipe cylindric, smooth, glabrous, pale-melleous, 1.5-2.5 
em. long, 1 mm. or less thick. 
Type collected on the under side of a dead log in Troy and Tyre, Cockpit Country, Jamaica, 
600 m. elevation, January 12-14, 1909, W. A. Murrill & W. Harris 964 (herb. N. Y. Bot. Gard.). 
DISTRIBUTION: Known only from the type locality. 
32. Omphalopsis subavellanea Murrill, sp. nov. 
Pileus broadly convex, slightly umbilicate, gregarious, reaching 8 mm. broad; surface 
smooth, glabrous, very pale avellaneous, margin entire, concolorous: lamellae decurrent, 
broad, subdistant, white: stipe subequal, rather short, smooth, glabrous, white above, con- 
colorous below, 1.5 cm. long, 1 mm. thick. 
Type collected on a much-decayed, moss-covered log in Troy and Tyre, Cockpit Country, 
Jamaica, ng m. elevation, January 12-14, 1909, W. A. Murrill @ W. Harris 1003 (herb. N. Y. 
Bot. Gard.). 
DIstRiBuTION: Known only from the type locality. 
DOUBTFUL SPECIES 
Agaricus (Omphalia) centenartus Berk. & Curt. Jour. Linn. Soc. 10: 286. 1868. Not 
A. centenarius Berk. & Curt. 1853. The specimens from Cuba determined as A. centenarius 
by Berkeley are Omphalopsis euspeirea. 
Agaricus (Omphalia) cyanipes Frost, Cat. Pl. Amherst 64. 1875. No description. 
Omphalia telmatida Berk. & Cooke, an European species, has a blue stipe, and this is also true 
of some of the rosy-spored agarics. 
Agaricus (Omphalia) lapidescens (Horan.) Cohn & Schrét. Abh. Naturw. Ver. Hamb. 
112: 15. 1891. Reported as collected in the sclerotium form in Porto Rico by Sintenis (Engl. 
Bot. Jahrb. 17: 498. 1893). ‘These specimens are at Berlin and closely resemble small, 
marble-like sclerotia found by Harris and Murrill in a clay road at Cinchona, Jamaica, January 
5, 1909. Schréter succeeded in 1890 in obtaining hymenophores of an Omphalia from the 
sclerotia of Mylitia lapidescens Horaninow. 
Delicatula microscopica (Wirtgen) Fayod, Ann. Sci. Nat. Hist. VII. 9: 313. 1889. (Agari- 
cus microscopicus Wirtgen, Flora 18: 321. 1835.) This minute plant has been reported from 
New Jersey and Guadeloupe, but the determinations are probably incorrect. Fayod included 
this species with O. integrella in his genus Delicatula. 
Mycena rorida (Fries) Quél. Champ. Jura Vosg. 74. 1872. (Agaricus roridus Fries, 
Obs. Myc. 1: 84. 1815.) Reported by Peck and others from various parts of the United 
States. ; 
Omphalia behringensis (Berk. & Curt.) Sacc. Syll. Fung. 5: 319. 1887. (Agaricus (Om- 
phalia) behringensis Berk. & Curt. Proc. Am. Acad. 4: 114. 1860.) Described from Arakamt- 
chetchene Island, Bering Strait. The specimens at Kew are rather poor. 
Omphalia camptophylla (Berk.) Sace. Syll. Fung. 5: 329. 1887. (Agaricus (Omphalia) 
camptophyllus Berk. in Smith, Engl. Fl. 57: 62. 1836.) Reported from Massachusetts and 
Rhode Island. 
