THAXTER. — MONOGRAPH OF THE 1 VROt LIUOM A( I I . 295 
Usually on the basal half or at the base of the left elytron of Antkicus flonlis Linn. Fivsl, Pond 
Cambridge, 
This 
general form of which 
rnnn 
species. The sterile ecll of the receptacle is also as a rule more pointed than in other sj, , and rela- 
tively someAvhat smaller, and the perithecial stalk-cell is usually abruptly bent .„• twisted. Il is I 
mon than either of the other speeies on this host. 
s i« . -0111- 
Ma/r 
Dioicomyces spinigeiu's Thaxter. Plate XUI, figs. 30 Ml. 
Proc. Am. Acad. Arts and SdL, Vol. XXXVII. p, 84- June 190L 
nent, or ahno t 
horizontal, the discharge tube somewhat more slender, and more often erect. Total length including 
foot 40 X 6.5 fi; to tip of discharge-tube 47 fi. 
Female individual Receptacle relatively small, tinged with dirty yellowish, edged with brown 1«. 
the tip of the small terminal sterile cell. PerithectUin dirty yellowish and relatively large, considerably 
and more or less symmetrically inflated, above and including its basal cells, to the ba> of the lip, which 
is bent abruptly outward at right angles to the axis of the peritheciiun; the apex broad, blunt, the lip- 
cells hardly projecting: a unicellular brown, straight or slightly curved, spine-like process, which taper 
to a blunt point, projects upward at an angle of about 45° from the middle of the outer (anterior) margin 
of the perithecium; and a slight elevation is also more or less distinct between its base and that of the tip; 
the stalk-cell, relatively short, becoming rapidly narrower toward ita baae. Spores male) 26 X 4 m, 
(female) 40 X 6 fi. Perithecia including basal cells 125 X 50 jK, the spinous process 55 ;\ the stalk-cell 
30 40 fi. Receptacle to tip of sterile cell about 45 ft. Total length to tip of perithecium about 185 ft. 
On Anthiciis fl oralis Linn., with the last two species, mon commonly on the inferior surface of the 
abdomen. Fresh Pond, Cambridge. 
This species is the most peculiar member of the genus and is at once distinguished by tin spine-like 
outgrowth from one of the anterior perithecial wall-cells, as well as by other characters. It is a rather 
rare species, but sufficiently abundant material has been examined to show that its characters are quite 
constant. 
Dioicomyces Floridanus Thaxter. Plate XLII, figs. 35-3('» 
Proc. Am. Acad. Arts and Sci., Vol. XXXVII, p. 33. June, 1901. Amorphomgce* Florida,, Tl xter, 1. < \ <•!. 
XXVIII, p. 159. 
Male individual. Relatively large, long, brown, the discharge-tube long deader curved, the tip of 
the anthcridial coll prominent beyond its base. Length 55 X 8 ju; the discharge-tube 21 ;«. 
Female individual. Color brown. Perithecium stout strongly curved inward the upper half nearly 
straight and symmetrical blunt-tipped; the stalk-cells lightly inflated, nearly isodiametric. Receptacle 
normal. Perithecium about 150 X 50 u. Total length about 200 
including foot, 05 ji. 
Blcdius basal is Lee 
Mi 
ISS. 
This speeies was originally described from a single female individual from Florida under the genus 
A morphomyces, but proves to correspond in all respects to the type of the present genu-. A single pair 
has been obtained from a small Bled ins collected by Mr. Emerton on the sand dunes at Ipswich, and 
the male proves to be somewhat different from those of the other species in its brown color, larger relative 
size, and elongate curved discharge-tube. The female resembles that of D. Anthir, more cl« ely than 
it does either of the other species, but differs in its stouter form and the nearly is. .diametric >.alk-cell of 
its perithecium, as well as in its darker brown color. 
