TIIAXTKIt. 



MONOGRAPH OF THE LA BOULBKNI ACK/K. 



265 



On the margin of the left elytron of Laccopliilns proximns Say, near the ha.se, Lake Bustis, Ehistis, 

 and I >aytona, Florida. 



This species is distinguished from all others by the position and form of its perithecial appendage. 

 The lip of the peritliecium has the same somewhat shriveled appearance that is seen in C. appendiculatus 

 from which, though its nearest ally, it is abundantly distinct. 



Chitonomyces spinosus Thaxter. Plate XLII, fig. 40. 

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



Basal and subbasal cells of the receptacle subequal, the latter somewhat broader; the lower mar- 

 ginal cell relatively short and broad; the lower appendieulate cell relatively large; the upper marginal 

 cell bearing distally a long unicellular amber-brown outgrowth, about half the total length of the indi- 

 vidual, projecting upward and outward at an angle of about 45°, with a slight terminal twist, and sub- 

 tended by a prominent bulge of the cell which bears it: the distal appendieulate cell relatively large and 

 broad. Peritliecium rather stout, the transverse limits of the wall-cells indicated externally by more or 

 less pronounced elevations, the blunt tip somewhat abruptly distinguished above the nearly straight 

 inner margin. Total length to tip of peritliecium, including foot, 130 p, greatest width 33 p. Marginal 

 appendage 45-GO p. Spores about 28 X 2.5 p. Peritliecium 75 X 20 p. 



On the left posterior leg of Laccophilus sp., Java. Rouyer, No. 1394. 



This species is immediately distinguished from all others by the spinous process which projects 

 from the penultimate cell of the distal portion of the receptacle. Although it occurs in the same position 

 on its host it does not seem nearly related to C. spinigerus which possesses a spine arising from the base 

 of the peritheeium. 



Chitonomyces Bullardi Thaxter. Plate XXXIV, figs. 32-35. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVII, p. 31. June, 1901. 



Straw-colored becoming tinged with pale amber-brown. Basal cell of the receptacle monstrously 

 developed, about as long, sometimes twice as long, as the remainder of the plant, its axis coincident with 

 that of a distal, variably developed, blunt, tooth-like, free posterior projection, near the base of which 

 the subbasal cell and the remainder of the plant project backward at an angle of about 45°, or less, to 

 the axis of the basal cell, the separating septum being vertical or nearly so; the subbasal cell small and 

 flattened: the lower marginal cell of the distal portion of the receptacle subtriangular, short and broad; 

 the lower appendieulate cell above it relatively large; the subterminal cell larger than the lower marginal 

 cell, curved inward so that the terminal appendieulate cell projects from it obliquely inward against the 

 peritliecium. Peritliecium four fifths or more free, relatively large and stout, distinctly inflated below, 

 tapering to the tip, which is characteristically modified through the presence of a large claw-like sub- 

 terminal dark amber-brown external projection, the distal half of which is somewhat abruptly recurved, 

 like the upper mandible of a parrot, over the small hyaline incurved 4-papillate apex, which is immediately 

 subtended on the inner side by a small, erect, dark amber-brown, tooth-like process, the blunt tip of which 

 alone is free. Appendages slender and extending to or beyond the tip of the peritliecium. Spores about 

 20 X 2.5 p. Peritliecium average 70-75 X 30-32 p not including the hook-like appendage, which is 

 25 p to its upper margin. Receptacle: basal cell to tip of prolongation 90-220 X 15-22 p, the portion 

 above to tip of distal cell 48 p. 



On the right inferior anterior margin of the prothorax of Cnemidotus 12-punctatus Say. Cambridge. 



This species which has been named for its discoverer, Mr. Charles Bullard, has been seen only on 

 specimens of Cnemidotus from the vicinity of Fresh Pond. The peculiar development of the receptacle 

 is associated with its position of growth on the anterior margin of the prothorax, over which it hangs 

 by the monstrous basal cell. The position of growth is invariable and this invariability is here even 

 more inexplicable than in other similar instances. The species appears to be very constant varying only 

 in the length of the basal cell of the receptacle. 



