41 



the leave and scapes. The color of the flowers 

 a delicate pink blush. These and some allied spe- 

 cies will ultimately require a new genus. 



Mr. Geo. Black presented a volume of Man- 

 tell's Pictorial Atlas of Fossil Remains. The 

 thanks of the Academy were voted for the dona- 

 tion. 



Apkil 30, 1850. 



Col. Ransom in the chair. 



R. A. S. Wood, Esq.. presented a specimen of 

 Wild Cotton from the Island of Maui. 



Dr. Ayres presented a specimen of Ruia biu- 

 ocidata. Gir. from the Bay of Ban Francisco. 



Dr. Kellogg exhibited a drawing and speci- 

 men of Fritiilaria. from I'lacerville. A species 

 remarkable for its very small purple flowers: 

 some specimens are seen with thirty or more of 

 these nodding flowers in a leafy top — lower leaves 

 long and narrow, verticillate by 5s, from 2 to 4 

 feel high, Hoot a collection of numerous bulb- 

 lets, around the parenl bulb. Also a drawing 

 and specimen of Trillium found recently at 

 Saucilito, a white flowered species. Farther 

 investigations arc required. 



Dr. K. exhibited a drawing and magnificent 

 specimen of Tulip grown in the garden of A. H. 

 Myers of Alameda, illustrating the prolific pow- 

 er of our soil and climate in a horticultural poiui 

 of view — the (petals were 4}^ inches lung, and 



almut 3 inches in breadth. The largest ever 



HVI1. 



Dr. Behr presented a drawing of a native Silk 

 Worm of California, with a specimen of the co- 

 coon, and the following description. 



Satumia rubra, collare album, abdominis seg- 

 menta albo marginata. Alarum fascia radicalis 

 angulum versus discnm porrigens ; secunda fas- 

 cia stricta Innulaque alba, marero exterior luridus 

 tinea uudulata nigra, et in aia superiori inter cos- 

 tam secundam et tertiam ocello signatus. 



Alae Bubter violaceae, signaturis eisdem in- 

 structae, ut supra, excepta fascia radicali, quae 



Dr. Behr remarked thai it would be likely to 

 prove highly valuable. Jt is found on the Cean- 

 othus thyrsiflorus, and also on a Rhamnus and a 

 Photinia, 



Dr. Ayres presented the following description, 

 with a specimen, of a fish believed to be new. 



GaSTEBOBTEUB BERBATD8, — Ayres. 



Length of the specimen described, two inches 

 [ Peooebdinos C. A. N. S., 



and one fourth; greatest depth, at about the 

 first dorsal spine, contained five and one fourth 

 times in the length : thickness, at the same point, 

 equal to half the depth. 



Sides plated in their whole length ; plates thir- 

 ty one or thirty two in number, each one marked 

 with granulated striae which, to a certain degree 

 radiate from the lateral line. The last eight or 

 nine plates are elevated in the middle, forming a 

 sharp lateral crest on the peduncle of the tail. — 

 A narrow naked space, covered with smooth skin, 

 is left below the plates, extending from the pec- 

 toral to the caudal fin ; a similar space, but with 

 the skin granulated, from the first dorsal spine to 

 the caudal fin. The bones of the head, the dor- 

 sal plates, tiie cubital bones, and the ossa inuomi- 

 nata .are similar in surface to the plates of the 

 sides. 



Head forming a little more than one fourth of 

 the entile length. Lower jaw the longer. Teeth 

 fine. even, and close-set in both jaws; those in 

 the lower jaw a trifle larger than those in the up- 

 per. Diameter of the eye contained three and a 

 hall' times in the length of the bead ; distance 

 between the eye and the tip of the upper jaw. 

 equa] to the diameter of the eye. Nostrils near- 

 er to the eye than to the tip of the jaw, in a de- 

 pression above the first suborbital plate. This 

 plate is prolonged into an acute angle anteriorly. 

 The second suborbital is much smaller, sub-quad- 

 rangular. The third is about as large as the 

 first, irregularly quadrangular, extending so far 

 down as to pest upon the narrow horizontal limb 

 of the preoperculum, while between its border 

 and the vertical limb of the preoperculum a na- 

 ked space is left. Operculum sub-triangular. 

 with I lie border rounded, marked with striae ra- 

 diating from the upper anterior angle. Intero- 

 perculuin very small, at the angle of the preoper- 

 culum. Subopercuhuu long, narrow, falcate. 



Naked space before the pectoral tin sub-quad- 

 rangular, equal in diameter to half the depth of 

 the fish. Cubital bones narrow, pointed anteri- 

 orly, and meeting in a point beneath the throat, 

 diverging posteriorly so as to leave a naked space 

 between them. Ossa innoininata united by 

 strong suture, prolonged into a lanceolate point 

 posteriorly a little shorter than the ventral spines, 

 sending off a flat vertical branch similar in 

 structure to the lateral plates upon which it is 

 articulated. 



First dorsal spine situated, a little anterior to 

 the base of the pectorals, its height equal to one 

 eighth of the length of the fish, acute, broad at 

 base, sharply serrate on each side, its point just 

 touching the base of the second spine, which is 

 entirely similar to the first in form, height and 

 serrations. A third, much smaller, is attached 

 to the suit dorsal: the point ol the second scarce- 

 ly reaches to its base. The soft dorsal is highest 

 in front, its height about equalling that of the 



Aran. 30.1 



