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 of Alexander Agassiz, 

 carried on by the U. S. Fish Commission 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. 



Ordek PODOPHTHALMIA. 



Suborder DECAPODA. 



Family MAI1D2E. 



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. Zool., Vol. XXIII. No. 1, pp. 4-8. 



VOL. XXIV. — NO. 7. 1 



