FISHERY BULLETIN: VOL. 75, NO. 2 



FIGURE 52. — Hadropenaeus modestus, holotype i 8 mm cl, off Bethany Beach, Del. A, Thelycum, ventral view. B, 



Ventrolateral view. 



median lobule; ventral costa with distal part free 

 from contiguous plate, bent outward and bearing 

 minute spinules on distalmost margin. 



Appendix masculina and appendix interna 

 together with ventrolateral spur (Figure 51C, D) 

 similar to those of//, affinis (see above). 



Thelycum (Figure 52A, B) with median protu- 

 berance on sternite XIV pyriform or subovate, 

 its apical portion directed anteriorly, and lying 

 between prominent, setose, paired convexities of 

 posteriormost part of sternite XIII; longitudinal, 

 high, median keel on sternite XIII produced 

 anteriorly into ventrally or posteroventrally 

 directed blunt tooth, with anterior margin 

 straight or convex and posterior margin concave. 



Maximum size. -Females: 19.5 mm cl; males: 

 17.5 mm cl. 



Geographic and bathymetric ranges.-Off Dela- 

 ware Bay (38°31'N, 73°21'W), to the Straits of 

 Florida, and in the Gulf of Mexico, northwest of 

 Charlotte Harbor, Fla.; also from the Bahamas, 

 throughout the Caribbean to off Barra Grande 

 (about 9°10'S, 34°52'W), Brazil (Figure 49). This 

 species has been recorded at a depth range of 

 about 150-550 m (Figure 9). 



326 



Affinities. -Hadropenaeus modestus may be read- 

 ily distinguished from its close relative H. affinis 

 by the characters included in Table 1. 



Remarks.-! have examined the holotype of H. 

 modestus and found that, contrary to the data 

 presented by Smith (1885), it possesses 6 rostral 

 teeth (including epigastric), not 7, and that the 

 merus of the fourth pereopod is only 6.5 mm long, 

 not 7.5 mm. Therefore the carpus, which is 7.2 mm 

 long, is not shorter than the merus, but about 

 1.1 times the length of the latter. These incorrect 

 statements led Bouvier (1906b) to point out dif- 

 ferences in the rostral armature and relative 

 length of the carpus between H. modestus and 

 H. affinis which do not exist. 



Hadropenaeus modestus is newly reported here 

 in the Caribbean and the Atlantic off northeast 

 South America. The locality record from off Barra 

 Grande, Brazil, is based on a single male taken 

 during the voyage of the Challenger (1873-76). 

 On the label accompanying this specimen is 

 "Barra Grande, Brazil, Challenger." Although 

 there are several towns in Brazil bearing the 

 name Barra Grande, the locality referred to 

 above must be that in the State of Alagoas, 

 because according to Tizard et al. ( 1885), the white 

 cliffs of Barra Grande could be seen from Chal- 



