NEW BIRDS FROM KAMTSCHATKA. 99 



and stouter than in the latter form ; abdomen blackish in the per 

 fect summer-plumage. 



$ $ : Total length, 382-411; wing, 187-201; tail f., 102-112; 

 bill from nostr., 10-12 mm. 



9 9: Total length, 357-384; wing, 179-189; tail f., 89-110; 

 bill from nostr., 9.3-10.5 mm. 



HAB. Commander Islands. 



TYPES. U. S. Nat. Mus., Nos. 89,059; 89,062; 92,716; 92,709; 

 89^57; 9 2 >7 12 - 



DIAGNOSES OF THREE NEW SPECIES OF FISHES FROM 

 THE GULF OF MEXICO. 



BY TARLETON H. BEAN, M. D., and H. G. DRESEL, Ensign, U. S. N. 



Read February 23, 1884, and published by permission of the Director of the U. 8. 

 National Museum. 



The writers are preparing descriptions of all the fishes of the 

 Gulf of Mexico represented in the collections of the United States 

 National Museum, to form a bulletin of the Museum. As consider 

 able time must elapse before the material can be ready for the press, 

 they present here brief diagnoses of some of the new species in ad 

 vance of the complete publication. 



Siphostoma crinigerum, new species. 



The types of this species are two males, No. 33,173, taken at 

 Pensacola, by Jordan and Stearns. The species is closely related 

 to S. crinitus (Jenyns), a species inhabiting the coast of Northern 

 Patagonia. 



The snout is very short, less than YZ length of head. Eye, 5 

 times in length of head. Head nearly n times in total length to 

 caudal base. Height of body, half length of head. Length of 

 marsupium is 4 times in the, total to caudal base. Dorsal of 16 or 

 17 rays. Body rings 15 ; caudal rings 38 cr 39. Dorsal fin above 

 the first $% to 4 caudal rings. The marsupium occupies 1 7 caudal 



