372 MONOGRAPH OF THE LABOULBENIACE^. 
tlie base cellular outgrowths on one or both sides, wliicli vaiy in foi-m and size. Spoj-es, 
45 X 2.5-3 fi. Perithccia, 55 X 15 fi, dorsal appendages, 15-SO X 5 /f , lateral appendages longer, 
50 X 3 ;t, pedicel, 85-50 X 3.5-4 /i. Sterile appendages longer, 200-220 x 3-4 ^. General 
receptacle, 220-900 fx, ; width at distal end 90-180 ^ ; the basal outgrowths, longest, 365 fi. 
Hydrocomhus laciisiris Lee. and IT. fi 
Ha 
York, ilaine. On an undetermined Hvdroconibus (?) from Slaughter, Washington (Miss Parker). 
This species presents very great variations in size and form, being elongate with a slender base 
or short and stout; and, though usually nearly symmetrical at maturity, is sometimes very 
considerabl}' bent or distorted; such differences depending doul)tU'SS largely upon the po.'^ition 
in which it grows. The basal cushion-like outgrowths, Avhen present, are also very variable in 
form and size, and arc not infrequently once branched. In most instances their cells aro 
arranged with a certain degree of dofinitcncss (fig. 8), but aro not infrequently irregularly 
massed. In its younger conditions, for some time after the perithccia nnd npi^endagos have 
broken out, the plant may have a one-sided appearance until Ihe original terminal portion 
(primary appendage) has sloughed off; after which the cup-shaped extremity becomes usimlly 
quite symmetrical. The antheridia are recognized with considerable difllculty, owing to their 
small size, and do not appear to be very numerous; but young jjcrithecia with trichogynes are 
always sufficiently abundant. 
The species was first found on hosts collected in a brook fed by a pond in ^Vcst Haven, 
Conn. ; but not in any abundance. More recently sufficient matorinl has beoti obtained from 
the brook immediately below Chase's Pond at Y.^rk, Me., while several specimens were found 
on an undetermined host, kindly collected for me in Washington by iliss Parker. It is therefore 
doubtless widely distributed in this country, thouirh nerhans nov.r v.-v- ...,....„ The host.H 
are most readily obtained in gravel just at tlie margins of cool brooks, or in Laves nnd oil... 
rubbish caught on partly submerged rocks or sticks in similar situations, and the parasite, owing 
to Its large size and pale color, is very readily seen, attached to 
on the lower surface of the thorax and abdomen. 
the 
ATOMYCES 
XXIV-XX\ 
Proc. Am. Acad. Arts aad Sci. Vol. XXVII, p. 34. 
BorSr'" r^^7 "' t '"'■"■^'^ """''" °f -•i'orposod cells bearing tcr.uinally the 
fu o,„lL r™ '"• ,r"'"'""™ '""^'^""^ "f f»- -- of wall-cell. c.oh conhUuiog 
nuMcoas colls, always more than six, often anvn™I ,™„. .u: , ._ ,___. .' • , .... .■,! 
anev vavm,,, „ff -.i, ' ''™™' "">'^' '"'s number (soTeii to sixlv-five), the 
^i a™ uZTr° " "f" ""^ "' ""'"""''•^ -"«• f-" "- -rVr i....er angle of which 
fe cX on so t ? M '"''""' ""' "''" •'"'^'"l-l- ^-^ ^'l- '">• fu"i-»P".ea. Spores 
aeicu ar, once-soptate. Anlherozoids long, rod-shaped, exogenous 
the accumulation of nnmermm t-nn^;^. • n- , 
matter of some difficulty ; Tc St W^^ ^ ^'^ ''^'^ ""'"'"' '^ ''''''' '"^'^'^" ' 
> , Mnce, although its characters are well marked, the different ^species 
» This name occurs in Streinz, Xomenckitor Fnr,rr 
Sturm." An examination of the citation, however Til ?/■' ''^''■'"'' ^ "^"^' *^ "Ceratomyce3 cnn.Jidus 
