ACADEMY OF NATURAL SCIENCES. 17 



more or less ulcerated at the roots. He was satisfied that this was 

 always the case with fishes exhibiting this growth. The turtle in 

 question, however, does not show any evidence of disease. 



Dr. Ayres made some further remarks on the similarity of the 

 fishes of Mr. Van Reed's collection to species found in California. 



Mr. Gabb noticed a resemblance in the fossils to those of this 

 State. 



Regular Meeting, March 16th, 1863. 

 President in the Chair. 



Nine members present. 



The attention of the Academy was called to the fact that the 

 names of Dr. W. Newcomb, of Oakland, and of Mr. H. C. Ben- 

 nett, of Columbia, both Corresponding Members of several years' 

 standing, had been omitted from the published list. 



Donations to the Cabinet were received as follows : 



Specimen of tree cotton, from near Mazatlan, Mexico; presented 

 by Dr. Trask. ' 



Donations to the Library : 



Alternate generation of Annelids, by A. Agassiz. Proceedings 

 of the Boston Natural History Society, vol. IX, sheets 1 and 2. 

 Report of the Trustees of the State Lunatic Asylum for 1862. 



Dr. Kellogg read the following paper : 



Description of two New Species of Collomia from Nevada 



Territory. 



BY A. KELLOGG, M.D. 



Collomia Nutt. 

 C. tinctoria Kellogg. [Fig. 2.] 



Stem erect, slender, one to three inches in height (often so minute as to appear 

 almost stemless) villous and pulvurently viscid glandular throughout. Leaves 

 opposite, lower pair oblong-spatulate obtuse, lamina slightly decurrent down the 

 petioles ; those above, lanceolate, petiolate, acute, or acuminate, mucronate, 

 one-nerved, quite entire. 



The minute yellow flowers crowded at the summit in pairs, from the axils of 

 the much abbreviated branchlets, short, pedicillate; and with the long, nar- 

 rowly lanceolate, acuminate, bractoid leaves aggregated into a somewhat dense, 



Q Mat, 1863. 



Pro. Cal. Acad., vol. hi. ^ 



