354 



THAXTER. MONOGRAPH OF THE LABOULBENIACE.E. 



Spores 70 X 5 /«. Perithecia 175-220 X 60 p. Longest appendages 1150 p, the average 750 p. Total 

 length to tip of peritheeium 325-1125 p. 



On all parts of Lafona Spinolw Guer., Bogota, Berlin Museum, No. 834. 



This species, which varies considerably in size, is well distinguished by its crest-like appendages, 

 w hich recall those of L. cristata, the very long stiff deep red-brown ultimate branchlcts of which are very 

 similar in general appearance. The type of branching is however quite different, and the species is per- 

 haps more nearly allied to L. Quedii which is still only known through the Type figured in my Mono- 

 graph. 



Laboulbenia Oedichiri Thaxter. Plate LXI, fig. 7. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 48. June, 1902. 



Tinged with smoky brown. Perithecia falcate, strongly bent toward the appendages, pale smoky 

 brown, tapering symmetrically, or nearly so, to the base and apex; the basal cells forming a short narrow 

 hyaline stalk; the tip not differentiated, suffused with deep blackish brown, except the pale or hyaline 

 blunt apex, the outer lips most prominent. Receptacle more or less distinctly punctate, relatively long 

 and of nearly equal diameter throughout, often slightly geniculate through an enlargement of the basal 

 cell, which is relatively very large just below the subbasal cell, which is smaller and separated by a more 

 or less oblique septum; cell III relatively small, distally more prominent on the inner side; cells IV and V 

 very small, nearly equal; cells III and VI subequal. The insertion-cell small, rather thick, wholly free 

 and separated from the stalk of the peritheeium by about half the width of cell V. The basal cell of the 

 outer appendage larger, sometimes inflated, bearing distally, as a rule, one terminal and two lateral 

 branches which are usually simple, distally hyaline, somewhat constricted at the septa, hardly reaching 

 to the tip of the peritheeium; basal cell of the inner appendage very small, circular in outline, bearing 

 apparently three branches like the outer. Spores 55 X 5.5 p. Perithecia 125 X 32 p. Receptacle 150 X 

 30 p. Appendages about 90 p. Total length to tip of peritheeium about 250 p. 



On the elytra and upper surface of the abdomen of Oedichirus nov. sp. ; Sharp Collection, No. 1154; 

 Rio de Janeiro, Brazil. 



The curious form of the peritheeium in this species which is inflated above its narrow hyaline neck, 

 and its peculiar receptacle, the distal part of which is relatively greatly reduced, serve to distinguish it 

 very clearly. Cells IV and V are very small and nearly equal, while cell I is relatively large, larger and 

 broader than cell II, and punctate where it is suffused. The host is a staphylinid, one of the Paederini, 

 but the parasite does not appear to be nearly related to L. cristata, or to any other described species. 



Laboulbenia cristata Thaxter. 

 Although the species of Pwderus are so numerous and at the same time so varied and peculiar, this single 

 species of Laboulbenia, which occurs on them all over the world, does not appear to be subject to any con- 

 siderable variation except in the number of branches which compose the crest-like group of appendages ; 

 and even this variation is not associated either with particular regions, or special hosts. Further material 

 has been obtained from the Berlin Collection No. 838 on P. longipennis Erichs., Sicily; No. 839, on P. 

 coarctatus Erichs., Brazil; No. 840 on P. duplex Epp., "Arussi Calla.," N. W. Africa; in the Sharp Collec- 

 tion; No. 1153 on P. rutilicornis Er., Columbia: in the British Museum; No. 763 on P. luridiventris, 

 Sharp, Volcan de Chiriqui; No. 388 on Pcederus sp., Java; No. 389 on P. australis Guer., Australia, No. 

 764 on P. erythrodcrus Erich., Cordova, Mexico: in the Paris Museum No. 204 on P..furcipes Curtis, 

 Muscata, India; No. 180 on Pwderus sp. Venezuela: in the Hope Collection No. 219, on an East Indian 

 Pwderus collected by Wallace, labeled "Bac. 38." 



Laboulbenia Diopsis Thaxter. 

 Additional specimens of this well marked species were found in the Berlin Museum on Diopsis 

 tenuipes Westw. No. 862, Bondie, Africa and on Diopsis sp. No. 857, Togo, West Africa, and in the British 



