332 



THAXTER. MONOGRAPH OF THE LABOULREXIACEyE. 



Pheropsophus from Spain is immature but appears certainly to belong here. I hope to illustrate this 

 species more fully in a future paper. 



The varieties of this species which it has been thought desirable to distinguish by special names are 

 as follows: 



var. Liberiana Thaxter. Cell V constantly once-proliferous, the accessory appendage simple, dis- 

 tinguished by a broad opaque black base. Type on Eudema sp., Liberia (Cooke); British Museum No. 

 591 on E. arcuatocoUe Murr., Old Calabar: Paris Museum Nos. 84 and 152 on Eudema sp., Congo, Africa, 

 in the original figure of this variety (Monograph, Plate III, fig. 7) the septum separating cell III from 

 cell IV, was not inked in before reproduction, so that the figure is incorrect to this extent. The septum 

 is almost exactly horizontal, and the two cells which it separates are about equal in length. The additional 

 material obtained since this variety was described resembles the type in all respects. 



var. cincta Thaxter. Plate LIII, fig. 5. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 53. June, 1902. 



Perithecium borne on a black base resembling a normal insertion-cell ; cell V several times proliferous, 

 each cell bearing a simple accessory appendage distinguished by a broad black basal suffusion. On 

 Eudema sinuaticolle Laf., Lagos, Guinea; British Museum, No. 590. On E. grossum Hope, Old Calabar, 

 Africa; British Museum, No. 587. On Episcosomus (Eudema) grossus Hope, Africa; Paris Museum, 

 No. 81. On Craspcdophorus adwquatus Kolbe, Bismarkdorf, Togo, Africa; Berlin Museum, No. 919, 

 and Kamerun, Africa; Berlin Museum, No. 912. On C. Congoanus Kolbe, Kimpoko, Congo, Africa; 

 Berlin Museum, No. 907. OnC. Preusii Kolbe; Barumba Station, Kamerun, Africa; Berlin Museum, 

 No. 910. On C. (Eudema) Strachani Hope, Togo, Africa; Berlin Museum, No. 913. 



This variety is entirely similar to the var. Liberiana except that cell V is more than once proliferous, 

 and that the perithecium is seated on a clearly defined black base which is like the normal insertion-cell 

 of this genus. In the latter respect the variety is quite unique, since no other member of the genus shows 

 any such tendency. The black portion appears to result from the modification of two cells (cells g and 

 d, Monograph, Plate II, fig. 17). 



var. atrata Thaxter. Plate LIII, fig. 2. 

 Proc. Am. Acad. Arts and Sci., Vol. XXXVIII, p. 53. June, 1902. 



Cell V twice to five times proliferous, the accessory appendages distinguished by thick black bases 

 and either divaricately once- or twice-branched, or simple. Very variable in size, the type on Rhopalome- 

 lus (Berlin No. 921) over 1.5 mm. in length, while specimens on Rhopalomclus from Port Natal (British 

 Museum, No. 030) are only 450 p. to tip of perithecium. A fine variety, which, in the absence of inter- 

 mediate forms, would never be specificially associated with the normal form of proliferans. Specimens 

 in which the accessory branches are simple (Berlin 909 and 908, Brit. Mus. 630) resemble var. cincta 

 exactly, except that no blackened base is distinguished below the perithecium. On Chlwnius Dohrini 

 Bert., Tropical E. Africa; Berlin Museum, No. 22G. On Euchlamius troehantericus Kolbe, Njam Njam, 

 Semnio, Africa; Berlin Museum, No. 921. On Craspedopltorus nucatus Harold, "Regne Lugna"? 

 Africa; Berlin Museum, No. 908. On C. Westermanni Laf., Togo, Africa; Berlin Museum, No. 909. 

 On RJiopalomelus angusticollis Boh., Port Natal, Africa; British Museum, No. 030. On Rhopalomelus 

 sp., Africa; Hope Collection, No. 311. 



Var. interposita nov. var. Plate LIII, figs. 3-4. 

 This name may be used to designate a form on African species of Chlwnius which resembles var. 

 atrata from the fact that one or all of its accessory appendages may be distinguished at the base by black- 

 ened septa, although specimens occur in which no such blackening is present. It resembles the Asiatic 

 forms of the species on the same host in general form, and in the Type (British Museum No. 599 on 

 Chkenius sp., Angola), has the same pale straw yellow coloring often seen in material from this region. 



