220 THAXTER. — MONOGRAPH OF THE LABOULBEXIACE^ 
press his great obligations to those who have already aided him in this manner, and to Mr. Charles 
Bullard in particular, who is one of the few persons that has recognized these parasites on their hosts, 
and to whom we owe the discovery of several of the most interesting genera and species. To Pro- 
fessor II. M. Richards he is indebted for a small lot of beetles from Java on which several interesting 
forms were found; to Prof. C. V. Piper for certain flies and beetles collected in Washington; to Dr. 
\Y. Horn of Berlin for the communication of specimens of Tetracha from Ecuador bfested by La- 
boidbema variabilis; to Dr. A. F. Blakeslee for a small collection of insects from Venezuela; to Dr. 
Dahl of the Berlin Museum for calling his attention to the occurrence of these parasites on the dip- 
terous insects collected by him near New Guinea; to Mr. Samuel Hcnshaw for the determination of 
hosts and for many other favors; to Mr. Coquillett for his kindness in determining Dipteral to Dr. 
David Sharp for the privilege of examining his private collections and for many kindnesses; to Pro- 
fessor Poulton of Oxford and to the gentlemen in charge of the European collections above men- 
tioned, and to the staffs of the several laboratories visited, for similar favors and courtesies. He 
is also greatly indebted to several other persons whose generous assistance has made the present publica- 
tion possible. 
Harvard University, January, 1908. 
In the first part of the present series, which the writer hopes to continue bj the addition of further 
numbers, an aeeonnt was give,, of the general history, literature, morphology etc. of the I,,l,„„l!,o,,i„oc,o, 
or Laboulbemalcs, as, in conformity with modern nsagc, they may be conveniently designated, and to 
Ins paper reference should be made for a comprehensive review of the subject. I n the present connec- 
t.on ,t ,s the purpose of the writer, before proceeding to a systematic consideration of the specie, and 
genera herew.th dlustrated, to give a brief review, only, „f , lle literature , hicll ,,„, vd since 189 ,, 
and to make only Sl ,ch comments on the morphology, development, etc. as may seem necessary in view 
of the new data now avaiUM* J J 
— ~^.. uu lu xi^w avaiiciuie. 
oral metT" 3 r"Vr he ^ b ° ulbenia,es llav "' rthi - *« last decade, become mo re frequent in the gen- 
n oTTh , • ^ an<1 ln b0,aniCa ' •"* thM - f0 ™<"^ *• ~* and in the numerous 
nos which have appeared, dealing with the origin „f ft, Ascomyect,, and higher fungi, and 
t '„ S ,, SeXUa ' ity ' ° ne fi "" S - ' "" e > »' "-* a Amctory reference to then, 
rapers, however, which advance our knowledge of th™ J« , . 
as the following list will show. *"* "^ ^ " 0t ,>CCn Wiy *«"*«"*' 
F- Ca vara, Malpighia, Vol. XIII n m irqo %l , 
on ants in Kuropc, he si gle , ' J ^ ^ , ' ' ^ ' """' *'"""' ""* ^^ 
Ascomycetcn No 1451 The Z st Tf T' *— ^ ^V^y district Itehn,, 
This author misled bv'the , T, ' "' S ° mC hm «' h and »"""'"" s *#>«* " K « ivi '"' 
-* of /,,,;;;::: ^t:::™ ; ,,ce - vhi : h the >-- ■»-— » f ** - - -<"-- 
» limited in d,e appended Key to t l 7 S ' mP T '"*' **"" ^ Se '™ " thc "Labonlbcniacete" 
*e group, i, i, further suggested that tneJnlal ^T^ ^ T? """^ """"""I "* 
