90 U.S. NATIONAL MUSEUM BULLETEN 292 



longitudinal rows of spinules; carpus longer than either palm or 

 merus. Third pereiopod mth propodus about two and one-half times 

 as long as dactyl. Color pattern dominated, especially in immature 

 specimens, by three prominent stripes on ventral half of carapace: 

 oblique, slightly sinuous stripe from above base of second pereiopod to 

 antennal spine; sharply sinuous stripe resembling figure "3" above base 

 of fourth pereiopod; and anteriorly convex stripe extending dorsally 

 above base of fifth pereiopod. A large species, maximum postorbital 

 carapace length about 45 mm. 



Color in life. — Dominant elements of color pattern most obvious 

 in very small shrimp. Body translucent bluish green with reddish- 

 purple stripes and spots, and yellow at articulations of podomeres. 

 Rostrum with longitudinal stripe extending almost from apex to 

 slightly behind orbit; two V-shaped spots immediately behind pos- 

 terior portion of stripe and below second dorsal tooth of rostral 

 series. Four prominent and tliree less conspicuous, obliquely vertical 

 stripes on branchial region: anteriormost slender, extending from 

 level of base of first pereiopod anterodorsally but not reaching base 

 of antenna; second longest and most prominent, extending from 

 immediately above base of second pereiopod to ventral base of an- 

 tennal spine; third very slender, short, situated above base of third 

 pereiopod; fourth prominent, resembling figure "3," lying above base 

 of fourth pereiopod, convex anteriorly with dorsalmost extremity 

 reaching level of antennal spine ; fifth very slender, shorter than third, 

 extending anterodorsally between dorsal and ventral extremities of 

 fourth stripe; sixth almost as conspicuous as fourth, slightly convex 

 anteriorly but extending almost directly dorsally above base of fifth 

 pereiopod and reaching level of antennal spine; seventh also con- 

 spicuous, extending dorsally along posterior margin of carapace from 

 base of fifth pereiopod to point slightly dorsal to dorsal extremity 

 of fifth stripe. Irregular horizontal stripe posterior to antennal spine 

 and situated dorsal to second oblique stripe; small spot below it 

 with diffuse reddish-purple pigment radiating ventrally to second 

 oblique stripe; additional horizontal stripe, posterior to that over 

 second oblique stripe, extending over third and fourth oblique stripes. 

 Abdomen with purple spots at articular knobs at anterior margins 

 of first, second, and third somites. Narrow continuous band of purple 

 at level of base of pleura from midlength of fourth abdominal somite 

 to telson; ventral margin of sixth somite with narrow purple band. 

 Single dorsomedian spot on anterior margin of first and on posterior 

 margins of second and third somites; third somite with small paired 

 spots just lateral to median one. Pleuron of first abdominal somite 

 with short vertical purple stripe. Telson with two pairs of small 

 purple spots. 



