— 20 — 



Sphaeropsidaceae. 



Cicinnobolus. 



On different Oidia (4 different host-plants) we have found Cicinnobolus 

 pycnidia. These were on an average 50 — 70 ti in length, while the 

 breadth was much varying according to their more or less lengthened 

 shape. The spores which appeared in long cirrhi (for instance 400 /i 

 X 25 /i) were of a constant form and size (7 — l^li ti x 2^2 — 3^). 

 Hence the forms in question differ much from C. Cesatii De By., common 

 everywhere in Europe on Oidium erysiphoides and 0. Tuckeri (pycn. 25 

 — 35^ long, sp. 2^/2 — 3 fi X \ fj), and cannot belong to this species. 

 As, however, the other Cicinnobolus-sipecles are bound to special Oidium- 

 forms (on special host-plants), and our host-oidia are not to be more 

 closely determined, it would be objectionable to bring together these 

 American forms with known European ones. On the other hand it will 

 be wrong to create one or more new species only on scattered pre- 

 parative findings, especially when the question is of a still mysterious 

 and disputed organism as Cicinnobolus. 



hi Sylloge Fungorum Cicinnobolus is not at all stated from America; 

 Far low and Seymour (A provisional host-index of the Fungi of the 

 United States) speak of Cicinnobobis Cesatii De By. on "various Ery- 

 sibaceae". 



St. Croix: Jolly Hill 30. 12. 05 (nr. 1673 on Sida sp.), 1. 1. 06 (nr. 

 1681 on Crotalaria retusa, nr. 1682 on Priva lappulacea) ; La Grange 

 30. 12.05 (nr. 1674 on Cassia sp.). 



St. Jan: Cruz Bay 12.2.06 (nr. 1677 on Sida sp.). 



Darluca Filum (Biv.) Cast. Cat. PI. Marseill. Sup. p. 53. — Parasitic 

 on Uredineae. 



St. Croix: Jolly Hill 31.12.05 (nr. 1818 on Puccinia Synedrellae). 



St. Thomas: Lovenlund 7. 12. 05 (nr. 1829 on Puccinia Synedrellae), 

 Dec. 1905 (nr. 1802 on Puccinia Commelinae). 



Melophia Eugeniae Ferd. et Wge. sp. n. PI. II, fig. 9. 



Stromatibus epiphyllis , innatis , applanato-convexulis , orbicularibus, 

 rugulosis, usque 4 mm. diam., aterrimis, nitidis, zonula angusta rufo- 

 brunnea cinctis, in hypophyllo maculas convexo-depressas, dilute brunneas 

 formantibus. Loculis in stromate singulo pluribus, immersis, applanatis, 

 magnitudine varia, inferne strato nigrefacto limitatis, superne epidermidem 

 convexam levantibus, nondum apertis. Gonidiis allantoideo-filiformibus, 

 falcatis, nonnullis vermiformibus, 6 — 13^ x 1 — IV'2^^, hyalinis. 



Ad folia viva Eugeniae sp. in insula St. Thomas Indiae occidentalis. 

 (Leg. Raunkiaer). 



St. Thomas: Lovenlund 10.5.06 (nr. 1678). 



