210 



The paper contains descriptions of 120 species and varieties, 

 determined from specimens collected in the vicinity of Boston, by 

 the author and his friends. It was referred to the Publishing Com- 

 mittee. 



Dr. Cabot exhibited specimens, and made some remarks 

 upon tho habits of the male and female of Pyrrhida raptor 

 — the native name Trapin, from Yucatan. He also noticed 

 the birds from near Lake Superior, presented at a former 

 meeting, by Mr. Douglass, viz : 



Corvus cor ax, . . Raven. 



Garrulus Canadensis, Canada Jay. 



Picus arcticus, . . American three-toed Woodpecker. 



Dr. Asa Gray read a paper, entitled " Characters of some 

 new genera and species of plants of the natural order Com- 

 positee, from the Rocky Mountains and Upper California." 

 In this paper the following genera and species were charac- 

 terized : 



Genus Monoptilon. Torrey fy Gray. 

 Composit3B-Asteroide« : Subtr. Asterinea? : Div. Astereas. 

 Capitulummultiflorum, heterogamum ; fioribus radii 1-serialibus 

 [igulatis feemineis, disci tubulosis hemaphroditis, omnibus fertilibus. 

 Involucrum fere uniseriale Erigerontis. Recaptaculum convexum, 

 nudum. Corolla? tubus radii et disci sparse hirtus : ligulae obcva- 

 to-oblongae. Stili Asteroidearum ; rami fl. hermaph. Appendi- 

 colo triangulari obtuso terminati. Achenia oblongi-obovata, leviter 

 obcompressa, sparsim hirtella, binervia (ad margines) vel in radio 

 trinervia. Pappus coniformis, duplex ; exterior e coronula brevis- 

 sima crenulata persistente ; interior seta capillaris unica, caduca, 

 discum adcequans, basi scabrida, apicem versus sensim clavatimque 

 plumosa ! Herba annua, exiguua, depressa, villoso-pubescens ; foliis 

 sparsis oblongo-vel lineari-spathulatis, integris ; capitulis subsessil- 

 ibus vel bracteatis. Flores disci flavi, ligulae ut videtur albae, creru- 

 leo vel lilacino tinctas. 



Species M. Bellidiformis. Torrey fy Gray. 



Genus Amphipappus. Torrey fy Gray. 

 Compositae-Asteroideae : Subtr. Asterineae : Div. Chrysocomece. 

 Capitulum plerumque 7-florum heterogamum ; nempe, flore radii 



