2S( 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



that of the M. anion H %arcd by Hendcr.son in the ChaUen<jrr Ano^ 

 mura. The sharp granules are arranged in short lines or sqiuinue on i 

 the posterior portion of the carapace. The specimen figured has 

 about twenty short, sharp spines on the gastric area. The smallest 

 specimen, a male, has fifteen; a large female, with a part of the exu- 

 viae yet attached, has the same spination as a specimen of M. antonii i 

 from the Paris Museum of Natural History (taken by the Talisman).^ 

 but otherwise it is like its companions. The TaJmnan specimen and , 

 the Bering Sea species agree in being broadest behind and tapering | 

 gradually forward; the Challenger figure shows a species slightly nar- 

 rowci- a little beyond the middle; the figure of the latter also shows :; 



Fig. 23. — Munidopsis beringana, x | 



a slight ditference in the spines of the gastric area — a single spine in 

 the center where the other species have two. In comparing 3L Ijerm 

 ^«w« with M. aciileata Faxon, the spination of the gastric area is very 

 similar. The coi'nea of aculeata is much larger than herlngana and 

 the eye-spines smaller; the rugae of the posterior portion of the cara- 

 pace are coarse and separated in aculeata., and exceedingly numerous 

 and crowded in herhujaiui 



Length of the large female, figured from the middle of the pos- 

 terior margin to the margin behind the eye, 32 mm.; greatest width, 

 28 mm. 



Locality. — From Alhatroas station 8()()3, 1,771 fathoms. 



Type.— Cut. No. 20557, U.S.N.M. 



