266 



THAXTER. MONOGRAPH OF THE LABOULBENIACEtE. 



Chitonomyces psittacopsis Thaxter. Plate XXXIV, figs. 23-25. 

 . Proc. Am. Acad. Arts and Sci., Vol. XXXVII, p. 30. June, 1901. 



Nearly hyaline. Receptacle rather slender, the basal cell several times as long as the squarish sub- 

 basal cell; the cell above the latter nearly equalling it in size and separated by an oblique septum from 

 the lowest of the marginal cells, which are all subequal; the terminal appendiculate cell of the usual 

 form, relatively large and long, without any distinct basal enlargement; the tip of the lower appendicu- 

 late cell curved slightly outward. Perithecium relatively very large, long, slender, usually curved side- 

 wise throughout, the upper half tapering very slightly to the curiously modified, clear black contrasting 

 tip, which resembles the parity open beak of a parrot; a larger upper recurved mandible-like process 

 being separated from a second, that resembles a lower mandible, by a hyaline area which includes, and 

 extends back from, the pore; the lower lip-cells translucent, but suffused with brown in such a way as 

 to suggest a tongue-like process projecting slightly between the "mandibles." Spores very numerous, 

 completely filling the cavity of the perithecium, greatly attenuated, 85 X 2.5 fi. Perithecium 200 X 30 a. 

 Receptacle to tip of distal cell 140 /i. Total length to tip of perithecium 290-300 



On the posterior legs of Laccophilus proximus Say. Lake Eustis, and Daytona, Florida. 



This is one of the larger species of the genus and is clearly distinguished by its tip which resembles 

 a parrot's beak and by its large size and slender habit. Two hosts were found bearing the individuals, 

 in groups in the position indicated, which were conspicuous from their large size and contrasting color. 



Chitonomyces Javanicus Thaxter. Plate XLII, figs. 37-38. 

 Proc. Am. Acad. Arts and Sci., Vol. XLI, p. 307. July, 1905. 



Foot relatively small. Basal cell of the receptacle small and narrow, its basal half or more suffused 

 with dirty blackish-brown, above hyaline; subbasal cell longer than the basal, and of nearly the same 

 diameter throughout; the three cells above it subtriangular, about equal in size, darker straw-colored, 

 or pale amber-brown: the lower marginal cell of the distal portion of the receptacle narrow, clean cut, 

 darker amber-colored; the lower appendiculate cell above it hyaline, small; the two remaining cells 

 above and external to it, forming an opaque appendage, shaped like a knife-blade, its tip rounded out- 

 ward from the inner side to an external blunt apiculus. Perithecium suffused below with pale amber- 

 brown, long and slender, narrower opposite the insertion of the lower appendage, expanding slightly 

 above it, the small hyaline apex curved inward and subtended externally by an erect, clear, dark amber- 

 brown projection, hardly or not at all exceeding it; and on the inner side by a larger, broader, less deeply 

 colored, spreading cell, which is curved toward the receptacle, the blackened portion of which projects 

 about half its length above it. Total length to tip of perithecium 165-185 fi, to the tip of the black pro- 

 longation of the receptacle 180-200 ( «, greatest width 22-25 fi. Perithecium 90-110 X 16 fi. Basal 

 portion of the receptacle 75 p., including the slender foot. 



On the margin of the left elytron of Laccophilus sp., Java. 



Reference has been made above to the correspondence between this species, C. melanurus and C. 

 marginatum, both as to position of growth and general structure. It is most nearly allied to C. melanurus, 

 although the conformation of the blackened termination of the distal part of the receptacle is quite dif- 

 ferent. The types were obtained from material in alcohol sent from Java by Rouyer, No. 1395. 



Chitonomyces Orectogyri Thaxter. Plate XXXIV, figs. 19-20. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVII, p. 32. June, 1901. 



Dull purplish, the cells thick walled and marked by faint transverse striations. The basal cell of 

 the receptacle very small and hardly distinguishable, owing to an abrupt curvature just above the foot; 

 the subbasal cell relatively large, distally narrowed, nearly the whole upper half of its posterior margin 

 covered by a relatively large triangular cell, from which it is separated by a nearly vertical septum; this 

 triangular cell is in contact distally with the ascigerous cavity and the base of the lowest marginal cell ; 

 the latter is very long, extending upward, its narrow extremity ending without enlargement opposite 



