THAXTIOR. MONOGRAPH OF TIIIO LAPOP LUKNIACK/K 



407 



On Cafiv.i scminitens Horn, and C. caiic.sren.s Milk, U. S. National Museum, Los Angeles, California. 

 On C. sericeus Holme, Brit. Mua No. 437, Great Britain. On Cafius sp., Brit. Mus. No. 42.5, " Europe," 

 No. 395, Hong Kong; C. bisulcatu.1 Sol., Chile, Paris Museum No. 174. On Cafius sp. Kilterv Point, 

 Maine; on 0. catenatus, New South Wales, Sharp Collection, No. 1 136. On elytra and legs. 



Although entomologists appear to he somewhat doubtful whether the staphylinid genua Cafius should 

 lie separated from Philontlms, this cosmopolitan specie's of Laboulhenia does not seem to share anv such 

 uncertainty, as I have never seen it on any of the thousands of I'liilontlii that I have examined, while 

 members of the genus Cafius, as above indicated, are subject to its parasitism all over the world. The 

 species is well marked, being clearly distinguished by its appendages, the outer and inner eventually so 

 displaced that they lie nearly side by side, and consisting each of a single series of somewhat obliquely 

 superposed cells which give rise externally to simple single branches, somewhat as in appendages of the 

 Goferito-type. The species is remarkably constant considering its very wide distribution, and is not 

 nearly allied to any other described form. 



Laboulbenia paleescens Thaxter. Plate LXI, figs. 9-10. 

 Proc. Am. Acad. Arts and Sci., Vol. XLI, p. 318. July, 1905. Laboulbenia pallida. Thaxter, 1. c.. Vol. XXXVIII. 

 p. 49, June, 1902: nec L. -pallida, 1. c, Vol. XXXV, p. 193. Dec. 1899. 



Hyaline, becoming faintly suffused with yellowish brown. Peritheeium one half or less free, con- 

 colorous or slightly darker, stout, erect; the tip small, usually well distinguished, bent outward; the lip- 

 cells outwardly oblique, the inner much more prominent, rounded distally, wholly suffused, except the 

 edges, with dark distinctly reddish brown. Receptacle normal, or often abnormally septate, more com- 

 monly as a result of one or two distal divisions of cell V. Insertion-cell broad, reddish brown, transparent 

 but contrasting, irregular in form, often oblique in position, being carried out free from the base of the 

 peritheeium, from which it is separated by the partly free upper margin of cell V, sometimes once divided 

 vertically; an external distinct similar accessory insertion-cell, bearing a single appendage and standing 

 in direct relation to one of the subdivisions of cell V is rarely present. The appendages hyaline, in general 

 normal, the outer basal cell twice or more than twice as large as the inner, bearing usually two branches 

 which may be once branched, one of them sometimes an antheridial branch; the basal cell of the inner 

 appendage producing usually a branch on cither side, which may bear only short antheridial branchlets 

 or longer simple sterile ones. Antheridia relatively large, stout, single or in pairs. Spores 75 X 6 fi. 

 Perithecia 125-150 X 00-70 /z. Receptacle 220-300 Longer appendages 150 /(. Total length to tip 

 of peritheeium 290-380 [i. 



On elytron of Clivina jasciata Putz., St. Geronima, Guatemala; British Museum, No. 674. On C. 

 dilittipennis Putz., Mexico; British Museum, No. 675. 



This species is quite typical of the "Clivina" group, the abnormal divisions below the insertion cell 

 being characteristic; although in some specimens the receptacle is absolutely normal. It is distinguished 

 by its pale color and the peculiar red shade of its insertion-cell, which is but faintly suffused, the suffusion 

 at the tip of the peritheeium having the same peculiar pale red tinge. In fig. 10 an individual is repre- 

 sented in which an accessory insertion-cell is developed in connection with a cell distally separated from 

 cell IV, which has the same reddish coloration. 



Laboulbenia Clivinalis Thaxter. Plate LXI, figs. 5-6. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXV, p. 165. Dec, 1899. 

 Usually rather slender. Peritheeium three fourths or more free, more or less deeply tinged with 

 blackish olive-brown, distally curved slightly outward, the tip black with hyaline lip-edges. Receptacle 

 wholly hyaline, or cells III and IV becoming more or less suffused with blackish brown, the suffused areas 

 punctate: bulging distally below the peritheeium. Insertion-cell well differentiated, black. Appendages 

 consisting of an inner and an outer basal cell, which may remain simple or become longitudinally 

 divided, sometimes also transversely or even obliquely: the outer basal cell hyaline, often several times 



