90 



ish. Length one-fourth of an inch. Dredged in two 

 fathoms sand, in San Francisco Bay. 



Orchestia Traskiana, St. Male, with the flagel- 

 la of the inferior antenna; forming more than half 

 their length, and consisting of fourteen articles ; su- 

 perior antennae reaching to the extremity of the sec- 

 ond article of the inferior ones; feet of the first pair 

 with a small, somewhat trilobate hand and minute 

 finger, as in O. Httorea, poUicifera, etc. ; feet of the 

 second pair with an ovate hand, with no teeth on the 

 oblique, convex, spinouspalm (which terminates pos- 

 teriorly in a slight notch) nor on the finger, which is 

 less than half as long as the hand. In the female 

 the first pair of hands resembles those of the male, 

 except in being smaller, having less produced lobes 

 and a comparatively longer finger ; those of the sec- 

 ond pair with a small elongated hand, with a roun- 

 ded extremity and a rudimentary finger applied at 

 about the middle of one edge, somewhat as in O. in- 

 sculpta, Dana. In both the feet of the sixth and sev. 

 enth pairs are of about equal length. Eyes rounded, 

 black. Color light-grey, sometimes greenish or 

 brownish, always very pale. Length three-fifths 

 inch. Very common among the rejectimenta along 

 high-water mark on the shores of San Francisco Bay. 



Allokciiestes semixuoa, St. Body compressed ; 

 eye broad, suboval, the posterior side straight, the 

 anterior slightly concave ; superior antenna; with 

 13-articulate flagella, and three-fifths as long as the 

 inferior ones, which are one-third as long as the bo- 

 dy, and have 14- articulate flagella. Setae on both 

 pairs of antennae few, very short and almost obso- 

 lete. Hand of 1st pair of feet short, palm oblique, 

 finger of moderate size ; carpus with a rather long 

 projection of its antero-inferior angle ; hand of the 

 2nd pair short, ovate, deeply excavated below for 

 the reception of the point of the fiDger, which article 

 is more than half as long as the hand. Color pale 

 green ; antennae red. Length half an inch. Found 

 on sea-weed, and among barnacles, on piles, stones, 

 etc., at half tide in San Francisco harbor. 



Mara Coxfervicola, St. Fourth, fifth, and sixth 

 articles of abdomen angular and setose on the dor- 

 sal surface. Eye broad, subreniform. Superior 

 antennx less than half as long as the body, with a 

 thickened basal article, a very slender 24-articulate 

 flagellum twice as long as its peduncle, and a 5-artic- 

 ulate appendiculum. Inferior antennae as long as 

 the superior ones, with a 12-articulate flagellum of 

 about equal length with its peduncle. Hands four, 

 rather small, of similar size and shape, truncate, 

 palm slightly concave, with blunt spinules ; finger 

 short, stout, curved, with an almost obsolete tooth 

 at the middle of its inner side. Feet of the fifth pair 

 scarcely more than half as long as those of the sixth 

 and seventh, which are about equal in length. — 

 Rami of the posterior pair of caudal stylets unequal; 

 external ones long, considerably flattened, setose 

 along their jagged edges ; inner rami very small. — 

 Color dark brownish, rarely blackish. Length 0.4 

 inch. Found among confervae, etc., in salt marshes 

 on the shores of San Francisco Bay. 



Phoxcs grandis, St. Large ; body thick, robust, 

 broad ; rostrum lamelliform, expanded over the 

 bases of the superior antennae, with broadly rounded 

 extremity. Superior antennae bi-flagellate, the in- 

 ner flagella very little smaller than the outer ones; 

 both 12-articulate ; penultimate article of peduncle 

 entirely concealed beneath the rostrum. Inferior 

 antennae a little longer than the superior ones ; ter- 

 minal article of peduncle broad at its extremity, 

 where its outer angle is rounded and a little pro- 



duced ; — its inner angle bearing the 15-articulatc 

 flagellum. Eye transversely oblong. Feet covered 

 with simple hairs. Those of the first and second 

 pairs with small subcheliform hands; those of the 

 third and fourth pairs with the third and fourth ar- 

 ticles dilated, the fifth slender and the sixth minute. 

 Feet of the posterior three pairs very much expand- 

 ed, those of the sixth pair longest. Caudal stylets 

 of the first and second pairs with short, styliform 

 rami, the inner ones being a little shorter than the 

 outer ones ; those of the third pair with long, flat- 

 tened, equal rami, the outer ones spinulose along the 

 outer edges, both fringed with long hair on the inner 

 edges. Terminal spines of considerable length. — 

 Color yellowish-white. Length, 0.5 inch. Dredged 

 in ten fathoms, on a sandy bottom, in the channel 

 near the entrance of San Francisco Bay. 



San Francisco, May 5, 1856. 



President in the chair. 



Donations to the Cabinet. 



From Mr. Thomas Marston, two specimens of Lig- 

 nite, from Douglass Flat. 



From Rev. Mr. Blakeslee, specimens of Tufa, Tre- 

 molite, Sulphuret of Iron and Iron Ochre, from Iowa 

 Hill. 



From Mr. James L. Hawks, a root used by the in- 

 habitants of Western Mexico as a cure for the bite 

 of venomous reptiles ; its native name is Huaco. 

 The thanks of the Academy were voted for the above 

 donations. 



From Dr. Trask, a valuable series of specimens 

 from the gold mines of California, together with 

 specimens of volcanic rocks from Sonoma and Placer 

 counties. 



From Capt. C. J. W. Russell, a specimen of Octo- 

 pus, from San Francisco Bay ; also, a Scorpion from 

 Sinaloa, Mexico. 



From Mr. Sloat, a Tarantula from the Warm 

 Springs, near San Jose. 



Sax Francisco, May 12, 1856. 



President in the chair. 



Sir Wm. J. Hooker, Director of the Royal Gardens 

 at Kew, was elected an Honorary Member of the 

 Academy. 



Mr. Andrew Garrett, of Hilo, Hawaii, was elected 

 a Corresponding Member. 



Donations to the Cabinet. 



From Mr. G. B. Williams, a Mastodon Tooth from 

 Kincaid's Flat. 



From Mr. Smith, a specimen of Selenite from La 

 Paz, Mexico. 



From Dr. Trask, two specimens of Callianassa 

 occidentalis, Stimpson, from the Bay of San Fran- 

 cisco ; also, numerous specimens of minerals, shells, 

 etc. 



From Col. Ransom, a specimen of Ostraea, from 

 the mountains sixty miles east of San Louis Obispo ; 

 it is 13.1 inches in length, and 7 £ inches in depth, and 

 weighs 18 pounds. 



