the latter character to fellow workers on the 

 American coast. 



Because identifications in the literature are 

 probably confused, the geographic limits of the 

 species given here must be regarded with re- 

 serve. 



Ovigerous females of H. pleuracantha occur in 

 North Carolina at least from April to October in 

 the Beaufort area. Gurney (1936b) pointed out 

 some differences between adults of H . pleuracantha 

 and H. zostericola (as well as other species of 

 Hippolyte) and described four larval and two 

 postlarval stages of what he considered to be a 

 Bermudian subspecies, H. pleuracantha bernvw- 

 densis. 



Hippolyte zostericola (Smith) 



Figure 66 



Virbius zostericola Smith, 1873c, p. 550, pi. 3, fig. 11. 

 Hippolyte zostericola: Holthuis, 1947, p. 16. 



Recognition characters. — Body smooth. Ros- 

 trum rather stout at base, thin distally, slightly 

 decurved, armed dorsally with three or four teeth 

 and ventrally with two to five teeth distally; 

 tip reaching beyond antennular peduncle and of- 

 ten nearly to tip of antennal scale; a strong 

 spine on each side at base of rostrum. Anterior 

 margin of carapace produced into a prominent 

 narrow lobe below eye followed ventrally by an 

 antennal spine; a shallow emargination at base 

 of antenna and a broadly rounded anterolateral 

 angle; hepatic spine well developed. Antennular 

 peduncle with basal article long and broad, 

 stylocerite slender, divergent at tip and well 

 separated from article, basal article terminating 

 in a pair of well-developed spines on anterolateral 

 corner; second and third articles much shorter 

 than first; antennular flagella of about equal 

 length, outer ramus stout basally, tapering to 

 slender distal portion, hairy on ventral border. 

 Antennal scale large, slightly exceeding rostrum 

 and reaching nearly to end of antennular flagella, 

 length a little over three times width; outer 

 margin slightly concave, terminating in a small 

 spine, spine exceeded by lamella; a spine near 

 base of scale. 



First legs short, nearly equal, reaching base 

 of distal article of antennal peduncle; chelae 

 lightly setose, palm inflated, fingers about 

 half length of palm, cutting edges finely serrate; 



Figure 66. — Hippolyte zostericola (Smith). A, anterior 

 portion of body in dorsal view ; B, anterior portion of 

 body in lateral view ; 1 mm. indicated. 



carpus irregularly conical in shape, about three- 

 fourths length of chela, lower outer border with 

 spiniform setae. Second legs slender, reaching 

 to distal end of basal article of antennular pe- 

 duncle; carpus longer than merus, divided into 

 three joints; fingers about two-fifths length of 

 chelae, tips of cutting edges with spines; chelae 

 hairy. Third to fifth legs long; third reaching 

 to tip of antennal scale; dactyls with series of 

 spines in comblike arrangement on inner border; 

 propodi spined on inner border. 



Abdomen strongly bent at third segment; 

 posterior portion of third segment raised with 

 hoodlike projection overhanging fourth segment. 

 Telson with two pairs of dorsal spines on lateral 

 border, one at half, another at three-fourths 

 length ; tip truncate, bearing three pairs of spines, 

 inner two pairs about equal, outer pair much 

 shorter. Fropodal exopods with lateral border 

 ending in a small spine flanked medially by a 

 movable spine. 



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FISH AND WILDLIFE SERVICE 



