AKT. 14. NEW SPECIES OF SPIDER CRABS RATHBUN 6 



Measur&tp.ents. — Female holotype, total length of carapace 5.4 mm., 

 length of rostrum 1.6 mm., width of carapace without spines 2.7 mm. 



Description. — Carapace and appendages covered with broad, flat- 

 tened vesicles, the largest spatuliform. Carapace constricted behind 

 orbit and behind hepatic regions. Four tubercles in a transverse 

 diamond on gastric region. Rostrum divided to its middle. Preocu- 

 lar spine suberect, prominent. Two slender marginal hepatic spines ; 

 a larger spine near lateral angle of carapace. 



CHORILIA LONGIPES TURGIDA, new subspecies. 



Holotype. — Male, Cat. No. 15500, United States National Museum. 

 Off San Diego, California, 359 fathoms, station 2936, Albatross. 



Measurements. — Male holotype, length of carapace on median line 

 bQ mm., width 50 mm. 



DescHption. — Compared to typical C. longipes^ the carapace is 

 much rougher, more spinous, the tubercles replaced by short, sharp 

 spines; the hepatic margin bears a spine instead of a tubercle or 

 blunt ridge; the width of the carapace increases notably in propor- 

 tion to the length, the branchial regions are inflated and approach 

 nearer the median line, so that the distance between them is not 

 more than half the greatest width of the cardiac region; the mov- 

 able segments of the antennal peduncle are longer and more slender. 



CmONOECETES OPILIO ELONGATUS. new subspecies. 



Holotype.— Mq\q, Cat. No. 46636, United States National Museum. 

 Sea of Japan, latitude 38° 09' 00" north, longitude 138° 32' 12" 

 ■east, 245 fathoms, station 4819, Albatross. 



MeasiD-'ements. — Male holotype, length of carapace on median line 

 112 mm., width 122.5 mm. 



Description. — Differs from typical C. opilio * in the greater length 

 of the legs, the merus of the second leg usually exceeding that of the 

 first leg in old males; the length of the second merus is from 5.5 to 

 6.3 times its width, as against a length of from 4.9 to 5.2 times its 

 width in typical opilio. C. opilio elongatus inhabits the Sea of Japan 

 and gradually changes in the Okhotsk Sea to the typical form. 



CHIONOECETES BAIRDI, new species. 



Holotype. — Male, Cat. No. 5862, United States National Museum. 

 Head of Kingcombe Inlet, British Colimibia; collected by H. E. 

 Nichols. 



Measurements. — Male holotype, length of carapace and rostrum 

 73.3 mm., width 81.2 mm. 



w 



•Dana, Amer. Journ. Sci., ser. 2, vol. 11, 1851, p. 269. 



* O. Fabricius, K. Danske Vid. Selsk. Skr., nye Saml.,. vol. 3, 1788, p. 182, plate. 



