Mr. F. Moore on a Wild-Mulberry Silkworm. 491 



Of uncertain Affinity. 

 TRIGONOCARPUS, Brongniart. 

 Trigonocarpus Parkinsoni, Brongniart. 

 Trigonocarpum Parkinsonis, Brongniart, Prodrome, p. 137. 

 Trigonocarpum Noeggerathii, Lindley & Hutton (not Sternberg), Fossil 

 Flora, vol. ii. pi. cxlii. c : vol. iii. pi. cxciii. figs. 1-4 b, pi. ccxxii. 

 figs. 2 and 4. 

 Remarks. Carpolithes alatus, Lindley and Hutton (' Fossil 

 Flora,' vol. ii. pi. lxxxvii., vol. iii. pi. ccx. b), appears to be 

 only Trigonocarpus Parkinsoni enclosed in its pericarp. It is 

 not yet discovered to which plant these seeds belong. 



Specimens of a Trigonocarpus have been found in which 

 the internal structure was preserved, and these show that it is 

 Gymnospermous. 



Locality. Roof of Kiltongue Coal, Mount Vernon. 



XLV. — Description of a Species of Wild-Mulberry Silkworm, 

 allied to Bombyx, front Chehkiang, N. China. By F. 

 Mooee, F.Z.S., A.L.S., &c. 



The wild species of silkworm, of which the following is a 

 description, was recently procured by Mr. F. Kleinwachter, 

 Commissioner of the Imperial Maritime Customs, Pekin, who 

 obtained it from Wu-lou, on the borders of the Tai-hu, 

 province of Chehkiang, where it is found feeding on the 

 wild mulberry. During the present month (May) specimens 

 have also been brought home by Mons. Fauvel, one of the 

 Commissioners of the Imperial Maritime Customs, who found 

 them at Hankeou on the wild mulberry. 



For the specimens and the opportunity of describing this 

 new insect I have to thank Mons. Natalis Rondot of Paris, 

 and the Chamber of Commerce of Lyons, to whose energy and 

 special labours in sericiculture we are indebted for the know- 

 ledge of this species, as well as for several other interesting 

 and valuable silk-producers. 



Rondotia, nov. gen. 

 Fore wing shorter and more triangular in form than in 

 typical Bombyx (B. mori) ; apex shorter, not subfalcate, 

 exterior margin acutely angular at end of upper median vein : 

 hind wing with the apex regularly convex ; exterior margin 

 oblique hindward, slightly sinuous and distinctly angular at 

 end of lower median vein. Cells comparatively broader and 

 shorter. Venation similar, except that in the fore wing the 

 fourth subcostal branch is emitted nearer the apex, and in the 

 hind wing the two subcostals are emitted at fully half beyond 

 the cell, instead of close to the end, and the middle median 



