FISHERY BULLETIN: VOL. 75, NO. 2 



FIGURE 39.—Pleoticus muelleri, 8 20 mm cl, off Laguna Rocha, Uruguay. A, Petasma, dorsal view. B, Ventrolateral view of left half. 



C, Right appendices masculina and interna, lateral view. D, Mesial view. 



FIGURE 40.— Pleoticus muelleri, 9 43 mm cl, off Praia de San- 

 tana, Espi'rito Santo, Brazil. Thelycum, ventral view. 



paired plates, each bearing pair of minute tuber- 

 cles. Median plate of sternite XIII elevated lat- 

 erally in ribs ending anteriorly in blunt horns, 

 and armed with strong, blunt, setose median pro- 

 jection; latter flanked anteriorly by setose pro- 

 tuberances borne on articular membranes of 

 fourth pereopods; sternite XII markedly convex, 

 its strong transverse marginal ridge with deep 

 median depression and blunt, lateral, posteriorly 

 directed horns. 



Co/or.-Pale yellow or yellowish red to tomato red 

 (Boschi and Angelescu 1962); reddish orange of 

 various shades in different areas of the body 

 (Boschi 1963); wine-red in young from 50 mm tl 

 through adulthood (Iwai 1973). 



Maximum size. -Males: 37.5 mm cl; females: 

 58 mm cl. 



Geographic and bathymetric ranges.-From off 

 Praia de Santana, about 20°S, 40°W, Espi'rito 

 Santo (data on label accompanying two specimens 

 collected by Getulio de Souza Neiva), south to 

 the northwestern portion of the Golfo de San Jorge, 

 Comodoro Rivadavia (Figure 34). It occurs most 



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