KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 25. N:o 5. 111 



F. 3-gona. Long. 2K— 30, lat. 24, lat. isth. 5-6, longJ proc. 5—6 /u. T. XVI, 

 f. 19 (!) is a little oblique). 



— — Forma divergens; processus breviores, superioribus paullo divergentibus. 



Long. 30, lat, 25, lat, isth. 8, long. proc. 4—5 u. T. XVII, f. 4. 



F. 4-gona. Long. 27 — 31, lat. 24 — 27, lat. isth. 7 — 8, long. proc. 5 — 6 fi. Forma 

 lateribus concavis. 



All the forms are common in Walliciis Bengal gathering. 



32. S. coiitectuni, n. sp. S. medioere fere longum quam latum; semicellulae cuneata", 

 dorso rötandato-truncatae angulis superioribus bi-aculeatis bitidis; ventre infläta» quoque 

 latere medio in processum validuni prosilientem rectum apice bifurcatum productae; 

 membrana glabra; sinu brevi, sub-acuto. A vertice visum 3 — 4-gonum; lateribus 

 modice concavis, angulis bitidis, aculeis paullo divergentibus, processu paullo contecto. 



Long. 38, lat. 42, lat. isth. K— 10, long. aeul.9— 10, long. proc. 7—8 ju. T. 

 XV, f. 20. 



This peeuliar form is not uncommun in Dr Walliciis collectioti, but does not 

 appear in bis Mscr. 



Var. inevolutuin. Fere ut in f. typica sed minor, angulis et processubus minus 

 productis, brcvibus. 3- et 4-gonum. 



3-gonum long. 19 — 22. lat. 23 — 28, lat, isth. 8 — 9, long. acul. et proc. 3 — 4 u. 



4-gonum » 24, » 24, » 8, 3 — 4 /u. 



T. XXII, f. 11; XVI, f. 2. 



33. S. trisulcatum, n. sp. S. submediocre, quinta parte latius quam longum; semicellulae 

 cuneata", apice paullo convexae; e basi leviter infläta', ad angulos superiores dilatata?; 

 angulis trifidis in processubus rectis apice bifurcatis divisis (proc. 2 super, et 1 infer.); 

 parte interiore angulorum bifido rotundato; superficie tota laevi; sinu brevissimo, rotun- 

 dato-cuneato. A vertice visum triangulare, lateribus concavis, angulis bifidis. 



Long. 30—32, lat. 42 (c. proc); lat. isth. 8—10, long. proc. 9—10 /u. T. 

 XVII, f. 7. 



F. minor. Fere ut in f. typica sed minor. 



Long. 24—28, lat, 30—32*, lat. isth. 7—9, long. proc. 8—10 t u. T. XVI, f. 17. 

 figures a little oblique! 



Both these forms seem to be not uncommon in Bengal. 



34. S. bisulcatum, n. sp. S. magnum, circ. lJ-plo latius (c. proc.) quam longius; semi- 

 cellulis ovatis, dorso eonvexis apice planis; apice gemmulis» conicis vel tuberculis circ. 

 H — 9 ornatis; ventre tumidis, lateribus medio inflatis in angulos 3 bicornutis vel bi- 

 sulcatis productis; cornua elongata, sub-crassa, divergentia, apice acuto-rotundata, ver- 

 ticaliter posita, introrsum rotundata; membrana tenui, glabra; sinu breve, valde aperto. 

 Indistincte verticaliter a me visum, sed apparet triangulare cura lateribus paullo 

 eoncavis. 



Long. SO, lat. 115 c. proc; long. 6S, lat. 58 s. proc; lat. isth. 21, long. proc. 

 31—34, crass. proc. med. 2—2.5 /u. T. XVI, f. 41. 



Xear to S. lo7);/isj)iiii(in (Bailev) Akch. (in Prit. Inf. p. 743, 1861; Didy modadon? 

 longispinum^ Bail. Micr. Obs. p, 36, t. I, f. 17; non Lundell nec Wittrock); but it 



