74 U.S. NATIONAL MUSEUM BULLETEST 292 



translucent with lavender spots; terminal setal tufts dark bluish gray 

 basally fading to pale yellow at midlength and becoming dark gray 

 distally. Ambulatory legs translucent with blotches of bluish purple 

 proximal to merus; distal two-thirds of merus light purple with pale 

 pinkish distal articular area; carpus with broad light piu-ple band 

 extending from just distal to proximal articular area to distal end of 

 podomere; propodus mth similar purple band on distal four-fifths of 

 podomere although with light apical band; dactyl pinkish with 

 corneous tip. Pleopods translucent lavender with bluish to purple 

 spots. Eggs bluish black. 



Yellow Phase: Differs from blue phase in that the dark areas are 

 brown; the blue, orange to yellow; and the white, cream or pinkish. 

 Too, the posterior portions of the telson and uropods are bright 

 yellow. 



2. Median-stripe Pattern (fig. 126) : Median, longitudinal, white 

 or cream stripe extending from tip of rostrum to posterior margin of 

 telson; stripe broadening posteriorly in each abdominal somite but in 

 first five narrowing suddenly just anterior to posterior borders. From 

 level of base of eye-stalk posteriorly, median stripe subtended by 

 bluish black bands fading quickly ventrally to translucent area bearing 

 widely dispersed red, blue, and white chromatophores. Articular knobs 

 at bases of pleura surrounded by purple. Uropods dark blue to gray 

 with terminal bands of yellow. 



Antennules, antennae, and pereiopods as in vertical-band pattern 

 except banding of third through fifth pereiopods not so prominent. 

 Pleopods translucent with very few red and blue cliromatophores; 

 with yellow setae. Eggs brown. 



3. Self Pattern (fig. 12c) : Dorsum of carapace, terga of abdomen, 

 anterior four-fifths of telson, proximal two-thirds of inner ramus of 

 uropod, and proximal half of outer ramus dark purple, almost black. 

 Ventrally, pm-ple area fading quickly to pinkish translucent on bran- 

 chial region and first five abdominal pleura. Posterior area of telson, 

 distal portions of both rami of uropods, and lateral spine on base of 

 uropod cream or yeUow. 



Antennides and eyestalk purple. Antennae, first and second pereio- 

 pods, and proximal podomeres of third through fifth pereiopods trans- 

 lucent with red chromatophores. Merus of third and fifth pereiopods 

 with distal half, except tip, reddish purple; that of fourth with two 

 bands, one in proximal and other in distal half. Carpus of thu'd through 

 fifth pereiopods reddish purple, propodus purple except at distal 

 extremities where pinkish translucent. Pleopods translucent with 

 widely scattered cliromatophores and yellow setae. 



Material examined. — The Dominican collections contain 282 

 males (carapace lengths 1.8-4.6 mm), 510 females (cl 1.8-6.2 mm). 



