OF THE THIRD TANGANYIKA EXPEDITION. 127 
123. STAURASTRUM DENTICULATUM, (Näg.) Arch. in Priteh. Infus. (1861) 
р. 738; W. у 4. S. West, in Trans. Roy. Irish Acad. xxxiii. sect. В (1906), 
р. 103, t. 11. fig. 11.—Phycastrum denticulatum, Näg. 
Victoria Nyanza.—In swampy pool near Bukoba (20 Apr. 1905 ; по. 618). 
124. SrAURASTRUM CUNNINGTONI, sp. п. (РІ. 6, fig. 7.) 
5. parvum, circiter tam. longum quam latum (cum processibus), modice 
constrictum ; semicellulee campanulatze, parte inferiore glabra, angulis superi- 
oribus in processus breves denticulatos horizontaliter dispositos productis, 
apicibus processuum tridenticulatis, apice convexo et verrucoso ; a vertice visa 
triangulares, lateribus rectis (vel levissime convexis), angulis in processus 
breves denticulatos productis, cum dente conico ad basin processuum utrobique 
et verrucis bidentieulatis intra marginem lateralem unumquemque, in centro 
punctatæ. 
Long. 30 д; lat. cum proc. 24-30 ш; lat. isthm. 8 p. 
Tanganyika.—In swamp, Mbete (28 Sept. 1904 ; по. 108). 
This species should be compared with 6. margaritaceum, (Ehrenb.) 
Menegh., from which it is distinguished by the more delicate processes, the 
verrucose apex of the semicell and the form of the vertical view. The 
triangular vertieal view possesses a conical tooth at each side of the base of 
each process and a pair of bidenticulate warts within each lateral margin. 
125. STAURASTRUM SUBGEMMULATUM, W. § G. S. West, in Trans. Linn. 
Soc. ser. 2, Bot. v. (1895) p. 16, t. 8. fig. 34. 
Victoria Nyanza.—Among Utricularia, near Entebbe (1 May, 1905; 
no. 620). 
126. STAURASTRUM MUTABILE, W. В. Turn. т К. Sv. Vet.- Akad. Handl. 
xxv. (1893) no. 5, p. 129, t. 16. fig. 42. 
Long. 35 р; lat. 36 м. 
Tanganyika.—In swamp, Kituta (23 Aug. 1904 ; по. 72). 
127. STAURASTRUM POLYMORPHUM, Breb., in Ralfs, Brit. Desm. (1848) 
p. 135, t. 22. fig. 9, t. 34. fig. 6. 
Victoria Nyanza.—Swampy pool near Bukoba (20 Apr. 1905 ; по. 618). 
128. STAURASTRUM PSEUDOTETRACERUM, (JVordst.) W. 4 G. S. West, in 
Trans. Linn. Soc. ser. 2, Bot. v. (1895) p. 79.—S. contortum, Delp., var. 
pseudotetracerum, JVordst. in К. Sv. Vet.-Akad. Handl. xxii. (1888) no. 8, 
p. 37, t. 4. fig. 9. 
Victoria Nyanza.—Swampy pools, Bukoba (20 Apr. 1905; no. 251.) 
129. STAURASTRUM TETRACERUM, Ralfs, in Ann. Nat. Hist. iv. (1845) 
р. 150; Brit. Desm. (1848) р. 137, t. 23. fig. 7 (figures not good). 
Tanganyika.—In swamp, Kituta (23 Aug. 1904; no. 72). In swamp, 
Mbete (28 Sept. 1904 ; no. 108). 
