342 THAXTER. — MONOGRAPH OF THE LABOULBENIACE^. 
Laboulbenia polyphaga Thaxter. 
This variable form, which in its typical condition, is readily distinguished, often appears to approach 
BO closely to L. flagellata and L. Ptcrostichi that, as I have mentioned in connection with these species, 
I am uncertain whether it should be kept distinct. It is typically small straight and stiff in habit, and 
rather slender; the outer appendage erect, or slightly divergent, and often quite simple, or usually but 
once bninched near its base; the basal cell of the inner appendage bearing two short branches producing 
a rather compact group of incurved antheridia, which are not usually associated with any well developed 
sterile branches. In this respect it is not unlike some forms of L. Anaplogenii, although the groups of 
antheridia are never as dense as in this species, and cell IV of the receptacle never shows the same tendency 
to proliferation and division. Though normally a short form, a few which seem otherwise indistinguish- 
able, especially from South America, are greatly elongated and very slender, measuring more than 700 [i 
in some cases; but such large individuals are, as a rule, readily distinguished from any of the ordinary 
types of L. flagellata. Until I can thoroughly revise and illustrate this type of which a large amount of 
new material has recently been obtained in South America, the forms below enumerated which have been 
examined since the publication of my Monograph may be provisionally assigned to this species. 
British Museum: No. 614 on Pelmatellus variipes Bates, Pinchincha, Ecuador; No. 61G on Brady- 
cettm puncticoUis Coquer., Algeria; No. 681 on Nitobia cupreola Bates, Irazu, Costa Rica; No. 659 on 
Loxandrus mistigma Bates, Paso Antonio, Guatemala; No. 683 on Pelmatellus nitescens Bates, Vera 
Paz, Guatemala; No. 624 on Argutor vernalis Fabr., Europe; No. 687 on Bradycellus circumdatus 
Bate, Yolcan de Chiriqui, Panama; No. 618 on Pangus sp., Venezuela; No. 627 on Platysma sp., 
Lake Huron, North America; No. 723 on Stenognathus quadricollw Chaud., Mexico; No. 685 on 
Pelmatellus vexator Bates, Totonicapam, Guatemala; No. 637 on Tropidopterus Buponclieli Solier, 
Chile; Xo. 623 on Abacetus quadraticollis Thorn., Old Calabar; No. 724 on P hlceotlieratus quadricollis 
Ch<L Cordova, Mexico; No. 626 on Plahjderus calarhoides Dej., Tangier; No. 625 on Argutor elonga- 
te* Klg. t Europe, Paris Museum: No. 197 on Mrogcnidimi Bedell Tsch., Mon-Pin, China (?); No. 
<i5 on harpaloid, Venezuela; No. 43 on Bradycellus Lusitanicus Dej., Lusitania; No. Ill on carabid, 
Celebes; No. La, lb and No. 2, on Carabid* indet., Llanos de Venezuela; No. 64 on carabid indet., 
Venezuela. Hope Collection: No. 325 on carabid indet., Amazon, and No. 341, Brazil. Berlin 
Museum: No. 1031 on Antarctia concinna, Lima, Peru; No. 1169 on Lecanomems ohemlus, Greymouth, 
New Zealand. 
Laboulbenia Pterostichi Thaxter. 
Although the type material of this species, as it occurs for example on P. adoxus in New England, is 
sume.ently well marked and easily distinguishable from the character of its appendages, the examination 
of varied material, which I have provisionally included under L. flagellata and L. pohjphaga, lead me to 
be .eve that the present form might be more properly united with one or both of these species. Yet, as 
have remarked elsewhere, if all the forms which approach perhaps too closely to L. flagellata were to 
be united under one "species," such a combination would become far too indefinite and comprehensive, 
»nd would cad to still further combinations and an ever increasing specific chaos. The South American 
fonna that I have provisionally included here, show certain variation from the North American type, and 
<>t forms rom the Eastern Hemisphere I should include, somewhat doubtfully however, material on P. 
•odo/tcw lev.l. from Turkestan and on Harpalus sp. ? from Japan. It is my purpose to give this species 
a thorough rev.s.on m connection with its two nearest allies, as soon as I have an opportunity to study 
nn>vti n!ll meri r n T **? ! ^ ""** **«** In the '«*** this species is retained 
So lV " m 7 t0 thC N ° rth American forms m ™tioned » my Monograph the following 
Cot " ^ S r r^rV added - ° n Pter ° k P ta *P-' Briti4 Musemn No. 629; Hope 
Coh 'X if ° n p "* <tP**» Columbia; No. 344 on Pterolepta sp. Columbia: Paris 
> ^ Ne^G T mIepta {0,izahus) * Columbia: B -»n Museum No. 931 on Physcmerus 
