5G8 



FliOCEEDiyGS OF THE NATIONAL MUSEUM. 



Another fact in the distribution of the Brachyura which needs to be 

 emphasized is the increasing number of species common to western 

 America and Japan. In a former paper I have alluded to the existence 

 of ChorUia longipes Dana off the coast of Japan. Dr. Caiman has 

 recently recorded Philyrapisum De Haan from Puget Sound. In the 

 U. S. jSTational Museum there is a large specimen of Chionoccetes oinlio, 

 supposed to be Japanese. Dr. Walter Faxon says that in the Museum 

 of Comparative Zoology are examples from Japan of Telmessu.s cheim- 

 gonus (Tilesius), which is distinct from T. acutidens Stimpson. To these 

 maybe added two Japanese species of Cancer { = Trichocarcinus), C. 

 gibbosuhis, and C. am2)hiocU(s, as noted below. The former stretches, 

 on the American side, from Lower California to Alaska, while the latter 

 has not yet been collected north of San Diego Bay. 



The intimate relationship existing between the Caribbean and west 

 American faunas is accented by the discoveries made on this voyage. 

 The subspecies, Ethnsa masearone americana, is found to be common to 

 both coasts. Among the new species described are many which have 

 close relatives on the Atlantic side of the continent. They are arranged 

 in the following list approximately according to the degree of resem- 

 blance between the allied species: 



J'dcifw coast. 



Osacliila lovis. 

 Hemus analogns. 

 Collodes tumidus. 

 Medanis Iobij)es. 

 Lissa aurivilliiisi. 

 Lissa tuberosa. 

 Aftiua angusta 

 Thyrolanibrns crosns. 



Palicns liicasii. » 



Calappa saiissurei. 



Portnnus (Acbelous) angustiis. 



Chasmocarcinus latipes. 



Atlantic coast. 



Osachila tuberosa Stinipsou. 

 llenius cristulipes A. Milue-Edwanls. 

 Collodes iiienuia A. Milne-Edwards. 

 Medanis spinimanus (Milne-Edwards). 



Lissa bicarinata Aurivillins. 



Acta-a bifrons Ratlibun. 

 Thyrolambrus astroides Rathbun. 

 / Palieus deutatus (A. Milue-Edwards). 

 ? Palieus faxoui Katbbuu. 

 ( Palieus alteruatus Eathbuu. 

 Calappa angusta A. Milne-Edwards. 

 Portnnus (Achelons) ordwayi (Stimpson). 

 Chasmocarcinus typicus Rathbun. 



In this report only the general localities and depths are given. Full 

 details in regard to the dredging stations may be found in the Report 

 of the U. S. Fish Commissioner for 1887 [1891], pp. 422-424. 



MAIID^. 



I. STENORYNCHUS JDEBILIS (Smith). 



Leptopodm dcbilis Smith, Ann. Ropt. Peabody Acad. Sci. for 1870, 1871, p. 87. 



Magdalena Bay, Lower California; off Cape St. Lucas; southern 

 partof Gulf of California; Panama Bay; 7 to 31 fathoms (stations 2798, 

 2799, 2823, 2824, 2825, 2826, 2828, 2829, 2831). In a male from station 

 2798, Panama Bay, the rostrum is about 1§ times the length of the 

 carapace; in specimens from all other stations the rostrum is short. 



