with middorsal row of five to seven small, erect 

 teeth, row starting somewhat anterior to middle 

 of carapace, extending to base of rostrum; 

 carapace somewhat swollen in female, making 

 an angle at base of middorsal row of teeth ; upper 

 margin nearly straight in males; anterior margin 

 with a narrow, anteriorly directed lobe forming 

 lower angle of orbit, a slender spine on lobe; 

 anterolateral angle serrate with two to four teeth ; 

 between anterolateral angle and lower margin of 

 orbit a row of three or four slender spines a bit 

 removed from and parallel to margin. Eyes well 

 developed ; cornea globular ; eyestalk with a trun- 

 cated process at upper inner margin overlapping 

 line separating cornea from stalk. Antennular 

 peduncle with stylocerite broad and rounded, 

 hollowed above and together with basal article of 

 penduncle forming concavity for reception of 

 eye; second article of peduncle much shorter than 

 third; upper flagellum shorter than lower, with 

 seven or eight broad and one or two narrow joints. 

 Antennal scale about twice as long as broad, over- 

 reaching antennular and antennal peduncles, but 

 not reaching end of rostrum; outer margin nearly 

 straight, ending in a small tooth reaching about 

 as far as lamella; a small spine on outer surface 

 of peduncle near base of scale. 



First legs equal, short, thickset, slightly over- 

 reaching base of antennal scale ; fingers somewhat 

 shorter and narrower than palm, tips of fingers 

 ending in dark-colored nails; palm broadened 

 posteriorly; carpus somewhat conical, about as 

 long as palm. Second legs more slender, reaching 

 about to end of antennal peduncle; chelae with 

 fingers shorter than palm; carpus almost twice 

 length of chela, three-jointed, median joint long- 

 est; merus two-thirds as long as carpus. Third to 

 fifth legs with dactyls ending in a sharp tooth, 

 posterior margin with four comblike teeth pro- 

 gressively smaller proximally. 



Abdomen smooth. Telson triangular; with two 

 pairs of dorsal spines at half and three-fourths 

 length; tapering to a narrow tip with spini- 

 form median process flanked by two pairs of 

 spines, Lnher pair longest; terminal portion with 

 feathered setae. Uropodal exopods with outer 

 margin ending in a small spine flanked medially 

 by a movable spine. 



Measurement*. — Length of body: 7 to 12 mm.; 

 males smaller than females. 



Variations. — Shape of the rostrum, as well as 

 its spination, is subject to some variation. 



Habitat. — Littoral waters from (in?) sponges, 

 and among shells and hydroids; surface to 24 

 fathoms. 



Type locality. — St. Joseph Island, Tex. 



Known range. — Beaufort, N.C., to Texas; 

 Cuba; Puerto Rico; French Guiana; Rio de 

 Janeiro, Brazil ; Sierra Leone, "West Africa. 



Remarks. — For many years this species has 

 been known as Concordia gibberosus Kingsley 

 or Lat rentes gibherosus (Kingsley). Holthuis 

 (1947) showed that these names fall into the 

 synonymy of Stimpson's species. 



Latreutes parvulus is not known to be common 

 anywhere in its range. It has been taken through- 

 out the year in the Carolinas. Ovigerous females 

 have been taken throughout the year in various 

 parts of the range north of the equator and in 

 February in Brazil. 



Genus Hippolyte [Leach, 1814] 



Verrill. 1922, p. 124.— Holthuis, 1947, p. 53. — Hemming, 195Sb. 

 p. 157. 



KEY TO SPECIES IN THE CAROLINAS 



a. Basal article of antennular peduncles without distal 

 spines dorsally plciiracantlia (p. 80). 



aa. Basal article of antennular peduncles with distal 

 spines dorsally zostericola (p. 82). 



Hippolyte pleuracantha (Stimpson) 



Figure 65 



Virbiua pleuracanthua Stimpson, 1871b, p. 127. 

 Hippolyte pleuracantha- Hay and Shore, 191 S. p. 390. pi. 26. 

 fig. 8.— Holthuis, 1947, p. 15 (rev.). 



Recognition characters. — Body smooth, with 

 tufts of plumose hairs on dorsal surface of cara- 

 pace and abdomen, tips of abdominal pleura, and 

 distal portion of eyestalks. Rostrum rather stout 

 at base, thin distally, slightly decurved, armed 

 dorsally with one to three teeth and ventrally 

 with one to three teeth near tip; tip reaching 

 about to end of antennular peduncle; a strong 

 spine on each side at base of rostrum. Anterior 

 margin of carapace produced into a lobe below 

 eye followed ventrally by an antennal spine, an 

 emargination at base of antenna followed by a 

 slightly produced, broadly rounded anterolateral 

 angle; hepatic spine strong. Eyes well developed. 

 Antennular peduncle with basal article long and 

 broad, stylocerite slender, lanceolate, reaching 



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