226 University of California Publications in Zoology [Vol. 23 



1856), "found on rocky bottoms in two or three fathoms about the 

 mouth of the Bay of San Francisco." Of the ten specimens taken 

 during the survey all but two are small or juvenile specimens. These 

 two are large adult specimens and were both taken at Sausalito, one in 

 the 150-foot seine and the other in a crab-net over the ship 's side. Of 

 the smaller specimens, one of about medium size (70 mm. wide) 

 was collected along the Sausalito shore; a very small one (12 mm. 

 wide) was obtained from among the rocks and algae between tide 

 marks at Point Bonita, while another of like size (15 mm. wide) was 

 dredged in a similar environment in 2*4 to Sy 2 fathoms (D 5778) 

 on the south side of Golden Gate, inside of Fort Point ; still two 

 other juvenile specimens were dredged (D 5808, 5845) in 27 to 49 

 fathoms in the outer central portion of Golden Gate. The three 

 remaining specimens, also juvenile (two averaging 35 mm., and one 

 measuring 8 mm. in width), were taken in two hauls of the tow-net, off 

 California City (H 5135) and Point San Quentin (H 5137), respec- 

 tively, at a considerable distance from the restricted area in which all 

 the other specimens were taken. These tow-net hauls show a maxi- 

 mum temperature of 18.2° C at the time they were made, which is con- 

 siderably higher than the one given in the range of temperature of 

 the hydrographic station (H 4967) to which all the other records 

 of this species are referable (see page 354 and accompanying table). 

 The range of temperature for this station is 8.7° to 14.3° C ; its range 

 of salinity, 26.6 to 33.3 ; a range not greatly at variance with the sur- 

 face salinities (25.4 and 28.9) observed at the above hydrographic 

 stations. 



Cancer gibbosulus (De Haan) 



Plate 36, figure 7 



Corystes (Trichocera) gibbosula De Haan, Fauna Japonica, p. 45, pi. 2, 



fig. 4, pi. 13, fig. 3, 1835. 



Cancer gibbosulus Rathbun, Proc. U. S. Nat. Mus., 21, 581, 1898; H. A. E., 



10, 176, 1904; Weymouth, Stanford Univ. Publ., Univ. Ser., no. 4, 



43, pi. 10, fig. 29, 1910. 



Characters. — Carapace markedly areolated, sparsely pubescent, hairs rather 



coarse and harsh; anterolateral margin, including outer angle of orbit, with nine 



strongly produced and forward-curving teeth, all except first two tipped with 



spines, behind these on posterolateral margin a well marked tooth directed upward 



and not laterally, and a distinct spine representing the eleventh; fronto-orbital 



width one-third the width of the carapace; front with five more or less acute 



teeth (not counting the supraorbital), the three median of which are the smaller 



and are separated from the tooth at inner angle of eye by a distance greater than 



