No. 7. — Reports on the Dredging Operations off the West Coast of 

 Central America to the Galapagos, to the West Coast of Mexico, 

 and in the Gulf of California, in Charge 0/ Alexander Agassiz, 

 carried on hy the U. S. Fish Commissio7i Steamer "Albatross," 

 during 1891, Lieut.-Commander Z. L. Tanner, U. S. N., Com- 

 manding. 



[Published by permission of Marshall McDonald, U. S. Fish Commissioner.] 



VI. 



Preliminary Descriptions of New Species of Crustacea.^ By Walter 



Faxon. 



Order PODOPHTHALMIA. 



Suborder DECAPODA. 



Family MAIID^. 



Euprognatha granulata, sp. nov. 



Carapace coarsely granulate ; two erect blunt spines in median line of cara- 

 pace, one on the gastric, the other on the cardiac area ; a transverse row of four 

 or five small tubercles in front of the gastric spine ; a spine near the middle of 

 each branchial area, with a smaller lateral spine below and a little in advance 

 of it ; the hepatic area bears a short blunt spine on its most prominent part ; 

 there are, besides, three or four prominent tubercles on the angle which divides 

 the hepatic and pterygostomian regions. The antennary spine is very long, 

 reaching beyond the rostral horns ; the three horns of the rostrum (interan- 

 tennulary and lateral) are about equal in length ; the supra-orbital spines are 

 well developed, and, like the antennary and three rostral spines, are conspicu- 



1 Figures of all the species described in this paper will appear in the final report, 

 whose publication is deferred pending the preparation of the lithographic plates. 

 A record of the stations occupied by the " Albatross " during her cruise of 1891 

 will be found in Bull. Mus. Comp. Zoiil., Vol. XXIII. No. 1, pp. 4-8. 



VOL. XXIV. — NO. 7. 1 



