PROCEEDINGS 



OF THE 



WASHINGTON ACADEMY OF SCIENCES 



Vol.. II, pp. 157-159- 



August 20, 1900. 



RESULTS OF THE BRANNER-AGASSIZ EXPEDI- 

 TION TO BRAZIL. 



II. 



THE ISOPOD CRUSTACEA. 



By Harriet Richardson. 



Family CORALLANIDiE. 



CORALLANA ACUTICAUDA (Miers). 



Corallana acuticauda Miers, Proc. Zool. Soc. London, 1881, Pt. i, pp. 78-79, 

 pi. VII, fig. 13. 



Hab. : Maceio coral reef, Alagoas (Branner-Agassiz Expedition) ; 

 Hotspur Bank (S. Atlantic), lat. 17° 32' S., long. 35° 45' W. 

 (Miers). 



The female of this species was described by Miers. Two speci- 

 mens, a male and female, were collected by the Branner-Agassiz Ex- 

 pedition at Maceio coral reef, Alagoas. The female is identical with 

 Corallana acuticauda as figured and described by Miers. The de- 

 scription of the male follows. 



Male. — Body convex. Last two thoracic seg- 

 ments and postabdomen not hairy, as characteristic of 

 female. 



Head transverse, with a prominent median point 

 projecting between the basal joints of the first pair 

 of antennae. On either side of the median point, the 

 anterior margin of the head is deeply excavate for 

 the reception of the much enlarged basal joints of the first pair of an- 

 tenna. The antero-lateral angles of the head are acute, and extend 

 anteriorly nearly as far as the median point. The eyes are large, 

 black, and composed of many facets. At their base they are separated 

 Free. Wash. Acad. Sci. August, 1900. (i57) 



Fig. J. Head 

 oi Corallana acu- 

 ticatida, $. 



