26 W. B. TURNER, FRESII-WATEK ALGiE OF EAST INDIA. 



(12 ad basin semicellul.) ornatae; et etiara ad suturam maculis vel plicaturis 

 parvis circ. 15 preditae. Prominentiae verticillorum complures truncatae; 

 apices prominentiarum dentem brevera munifcae, fere ut in Tr. verticillato 

 * superbo (Mask.) Nordst. (Nordst. Alg. N. Z. t. VII f. 4). 



Long. 570, lat. 28; It. apic. c. acul. 36, s. acul. 30 ,«. T. II, f. 1. 

 Central India, J. S.; East India, ex Utricularia sp., G. v. L. 

 I only had one specimen from East India, but it had 17 verticils in 

 each semicell. 

 Forma b. gracillima, n. f. Trip. mediocre; lobi apicales 2, profunde bifidi, lobuli 

 singulatim aculeati, divergentes; altera latere inter loborum spina erecta 

 unica. Semicellulse verticillis prominentiarum 11 — 14 instructse. Forma 

 aculeorum irregularis. 



Long. 440, lat, 22; lat. apic. c. acul. 36, s. acul. 27 ,u. T. II, f. 2, 

 (also, after Wallich No. 116, f. 2 a — side view of apex). 



Raneegunge, G. C. W. — Central India. Wallichs sketch only shows 

 8 whorls of prominences in each semicell. This is probablv the form de- 

 scribed by Hobson 1. c, as Doc. pristidce. 

 c. quadrilobata, n. f. Forma minor, in qua apices lobulis 4 (bi-aculeati) termi- 

 nati sunt. Prominentiie verticillorum 10 — 12, dentibus sub-erectis, acuto- 

 conicis, ad basin circ. 10 positis. 



Long. 360, lat, 21; lat, apic. c. acul. 26, s. acul. 23 //. T. II. f. 3. 

 Central India. This form is possibly a connecting link between T. (/ra- 

 die and Archers Doc. Kayei (Nat, Hist, Soc. Dubl. Proc. vol. IV, p. 35, 

 t. II, f. 2)? 

 * bilobatum, nov. subsp. A Tr. gracilt typico differt prominentiis verticillorum 

 rotundatis non acutis, dentibus rotundo-conicis (in quoque verticillo 8) non aculeatis: 

 lobis apicalibus bi- (non tri-)lobatis, cum spinis intervenientibus apicalibus duabus, ut 

 supra in forma b. Semicellula3 (et lobi terminales) tenuiores quam in f. typica, A erti- 

 cilli 10 — 13 in quaque semicellula, 



Long. 380, lat, 15, lat, apic. c. acul. 24, s. acul. 21 //. T. II, f. 4. 

 Central India, 



In one case (fig. 3) I observed an instance of a tridentate terminal projection; 

 this seems abnormal. Cf. Nordst. Alg. N. Z. p. 64! 



** bidentatum Nordst. (Alg. Brås. p. 18, t. II, f. 3, 1877) forma dépauperata, 

 n. f. Tr. minus, 14 — 20-plo longius quam latins, verticillis eire. 11 in quaque semi- 

 cellula; verticillis superioribus (5) simplicibus, acutis, erectis; verticillis inferioribus (6) 

 bidentatis; apice dilatato bilobato bidentato. Semicellula? regulariter attenuataa. 

 Long. 280 — 390, lat. centr. semic. 18—22, lat, apic. circ 19 ,u. 

 Wallich, Mscr. No. 112. 

 Sonthal jungle, G. C. W. 



Note. Triploeeras gracile is perhaps the most polymorphic species known! It 

 seems a little stränge that neither Dr. Wallich nor I have mel with the closely re- 

 lated species Tr. verticillatum. A young segment of T. gracile is represented (after 



