55 



Etheostoma variata, E. caprodes, Catostomus Duquesnii, 

 C. erythurus, C. nigranSy Minnilus dinemus, Luxilus 

 chrysoceplialus, L. elongatiis, SemoHlus cephalis, S. dor- 

 salis, S. diplema, S, biguttatus, Hydrargii'a limi, Esox 

 reticulatus, Pimelodus coerulescens, P. ciipreus, Hypentel- 

 ium macropterum. Dr. Storer also presented a specimen 

 of Cory dolus coiiiutus, in the name of E. P. Clark Esq., 

 and a South American insect on behalf of Dr. F. W. 

 Cragin. 



Mr. Thomas Bulfinch presented to the Society, a small 

 lobster undergoing the process of changing its shell. 



Dr. Francis Minot was elected a member of the Society. 



July 19, 1848. 

 Dr. D. H. Storer, Vice-President, in the Chair. 



Present, ten members. 



Dr. Cabot announced that among the specimens for which the 

 Society is indebted to Dr. Cragin, of Surinam, he had found the 

 male and female of a species of Chordeiles, which he was at 

 first disposed to consider as undescribed, but which he finally 

 concluded must be C. laheculatus, which has been described from 

 the female, by Jardine. There are, however, some marked differ- 

 ences between our female specimen and his description. The 

 female of our bird measures eight inches, instead of seven and 

 a half, the measurement of Jardine's. On the left wing, at a 

 point opposite the tips of the sixth and seventh primaries, a 

 white band occurs, extending quite across the first three pri- 

 maries, and becoming rufous on the fourth, and not quite crossing 

 the web on either side of its shaft. On the first primary this 

 band is divided by a black mark along the shaft. On the right 

 wing the band extends across both barbs on the third primary 



