)56 BULLETIN 152, UNITED STATES NATIONAL MUSEUM 



Off Vieques Island: Culebrita Lighthouse, NE. % E., 7% miles; 16 

 athoms; Co.; temperature 25.2° C; February 10, 1899; station 6092, 

 Hsh Hawk; 1 male, 1 female (24316). 



Barbados; 1918; Barb ados- Antigua Expedition, State Umversity of 

 ;owa: In corals; May and June; 1 male, 2 females (1 ovigerous), 1 

 i^oung (Mus. S.U.I.), 1 male, 3 ovigerous females, 1 young (57996). 

 Dkra Reef; May 13; 1 male, 6 females (4 ovigerous) (Mus. S.U.I.). 

 ^eedham Point; May 18; 1 male (Mus. S.U.I.). Off Needham Point; 

 54 fathoms; rky.; 1 male, 4 females (2 ovigerous) (Mus. S.U.I.). W. 

 )y N. of Pelican Island, lYo miles; 80 fathoms; rky; May 16; 1 young 

 :Mus. S.U.I.). 



CURAQAO. — Caracas Bay; 1920; C. J. van der Horst: In corals; 

 ipril; 5 males, 6 females, 9 young (Amsterdam Mus.). In Mean- 

 irina; April 7; 2 males, 1 female (56875). 



Spanish Water; in Pontes furcata; May 5, 1920; C. J. van der Horst; 

 [ male (Amsterdam Mus.). 



BRAZIL.— Maceio coral reef, Alagoas; July 25, 1899; A. W. Gree- 

 ey, Branner-Agassiz Expedition; 1 female (25745). 



Pernambuco; 1876-77; R. Rathbun, Hartt Explorations: 1 male 

 ;i9968). Rio Formoso; December, 1875; J. C. Branner collector; 1 

 emale (19965). 



WEST COAST OF MEXICO.— Maria Madre Island; March- 

 Vlay, 1927; from Secretaria de Agricultura y Fomento, Mexico, 

 through A. L. Herrera; 1 male (60728). 



Maria Madre Island; E. part of bay; 5-8 meters; May 17, 1925; F. 

 I'ontreras; California Acad. Sci.; 1 ovigerous female; returned. 



Genus TRAPEZIA Latreille 



Trapezia Latreille, Encyc. Meth., vol. 10, 1825, p. 695; type, T. derilifrons 



Latreille, 1825, = r. cijmodoce (Herbst, 1801). 

 jrapsillus MacLeay, in Andrew Smith, 111. Zool. S. Africa, Annulosa, 1838, 



p. 67; type, G. maculatus MacLeay = Trapezia cymodoce macvlafn (MacLeay). 



Carapace approaching the quadrilateral, little convex, not much 

 3roader than long, smooth and without trace of regions. Antero- 

 ateral borders much shorter than postero-lateral, running backwards 

 ilmost straight and parallel with each other or curved outward and 

 iway from each other, not therefore meeting the convex curved and 

 convergent postero-lateral borders at any angle. Fronto-orbital 

 Dorder extremely broad, about as extensive as greatest breadth of 

 carapace. Front broad, horizontal, lamellar, separated from supra- 

 orbital angle by a notch; cut into two lobes of which both inner and 

 outer angles are pronounced, so that with the supraorbital angle the 

 front usually appears 6-toothed. Orbits large, cut out of antero- 

 ateral angles of carapace; their dentiform upper and lower inner 

 ingles broadly in contact, so that the antennae are widely excluded; 

 margins without fissures or sutures. The antennules fold nearly trans- 



