PEOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. )) 



and apex armed with a spine in front ; a spine on tbe anterior edge ot 

 the following' joint. The first pair of caudal appendages terminate half 

 way the rami of the third pair ; the second pair rudimentary, represented 

 only by a projecting tubercle. 



Male. — The base of the superior antennae stouter than in the female, 

 the first joint broad, the second long and straight, with its inferior apex 

 produced, and its lower edge densely hairy; the first and second joints 

 of the flagellum subequal, and together about as long as the third; the 

 third and fourth subequal, the remainder of the flagellum lost. The 

 inferior antenntTB more slender than the superior ; peduncle three-joiuted, 

 and bent upward at the third joint ; the first joint broad, the others 

 successively diminishing in breadth; flagellum very long, one-half, or 

 more, than the length of the body, filamentous, joints elongate, the first 

 the longest, the remainder subequal. The under surface of the flagella 

 of both pairs furnished with long, equidistant hairs. The body of the 

 animal smaller and stouter than the female; the last two joints of the 

 third pair of feet relatively shorter, and all the feet shorter and more 

 robust; the fifth joint of the fifth pair about one-half the length of the 

 fourth joint, and impinges on the large tooth anterior to its middle. 

 The second pair of caudal appendages well developed, and extend to 

 the commencement of the rami of the first pair. 



The number of sjiecimens examined was seven — six females and one 

 male — varying in lengths from 9 to 15™", and coming from localities in 

 the Pacific Ocean north and south of the equator, from latitude 34<^ 00' 

 north to latitude 30° 40' south, and from longitude 102° 43' west to 

 longitude loO^- 00' west. Clans first describes the species as coming 

 from the Mediterranean Sea. The length of the male specimen, lO'"'". 



EXPLANATION OF PLATE I. 



Fig. 1. Phronima atlantica (famaie). Fiftli thor.icic foot ; la. Caudal appendages. 



Fig. 2. Phromma atlantica (male). Fifth thoracic foot. 



Fig. 3. P/u-omniaj;ac(/tc« (female). Filth thoracic foot; 3 «. Caudal appemlages. 



Fig. 4. Phronimellaelongata (male). Fifth thoracic foot ; 4 a. Caudal appendages. 



Fig. 5. Phronimella elo7igata {female). Fifth thoracic foot; 5 a. Caudal appendages. 



Washington, D. C, March 1, 1882. 



1>ES€RBPTION OF SEVEKAL, IVE^V RACES OF AMEKICAiV BIRDS. 



By ROBERT BIDCJl^AY. 



1. METHRIOPTERUS CUEVIROSTEIS OCCIDEXTALIS.* 



Ch. — Similar to M. curvirostris, Swains., but tail much longer, colors 

 darker and browner, spots of lower parts better defined and regularly 



* Methriopterus curvirostris occidentalis Eidgw., MS. 



''Harporlnjnchiis curvirostris" Lawr. Mem. Boston Soc. N. H. II. pt. iii, No. 2, 1874, 

 267 (Tepic and Mazatlan). 



