PEREZ FARFANTE AMERICAN SOI.KN(K'KRII) SHRIMPS 



the sixth abdominal somites, immediately poste- 

 rior to the transverse ridge of the preceding seg- 

 ment. The seven pairs of photophores consist of a 

 yellow conical portion and a red lens. 



Color-Body translucent salmon with obliquely 

 vertical, deep yellow stripes, and milky white 

 patches of various sizes on carapace. Rostrum 

 yellow from second rostral tooth to apex, epi- 

 gastric and first rostral teeth salmon. Carapace 

 with three anterior stripes resembling chevron: 

 anteriormost short, arched, extending from near 

 base of orbital spine posterodorsally to below first 

 rostral tooth; second extending almost from base 

 of postorbital spine to posterior base of epigastric 

 tooth; third posteriorly flanking cervical sulcus, 

 and broadening on middorsum, forming diamond- 

 shaped mark. Additional posterior stripe on cara- 

 pace narrow on middorsum, broadening rapidly 

 anteroventrally, and then narrowing again, form- 

 ing band along dorsal part of branchiostegite. 

 White patches on carapace very conspicuous: 

 anterior one subcircular, situated on depression 

 below hepatic spine; second oblong, lying ventral 

 to hepatic sulcus; posteriormost ovate and large, 



almost covering entire branchiostegite. First 

 abdominal somite with yellow spot immediately 

 anterior to posterolateral hinge, remaining five 

 somites with broad, uniformly wide yellow stripe 

 extending from anterior half of middorsum 

 posteroventrally to lateral hinge, except stripe on 

 sixth reaching posteroventral extremity of pleu- 

 ron; sixth somite also with short posterodorsal 

 yellow stripe extending from dorsum to lateral 

 base of telson; midventral part of pleura of an- 

 terior five somites with deep salmon spot, sixth 

 somite with deep salmon patch on anteroventral 

 part of pleuron. Telson salmon, with median 

 sulcus yellow; uropodal rami bearing broad trans- 

 verse band across midlength. Antennulae and 

 antennae deep salmon, darker on basicerite of 

 antenna and on adjacent anteroventral portion 

 of carapace. Thoracic sternites, first and second 

 maxillipeds, and proximal podomeres (including 

 merus) of third maxilliped and pereopods pale 

 salmon; distal podomeres deep salmon except for 

 narrow milky white longitudinal band. Basis of 

 pleopods deep salmon preaxially with lateral part 

 milky white; endopods and exopods whitish with 

 orange line along midlength; ventral surface of 



FIGURE 60. — Mesopenaeus tropicalis, 2 17.5 mm cl, east of Cayos de Albuquerque, western Caribbean. A, Petasma, dorsal view. B, 

 Ventral view. C, Right appendices masculina and interna, dorsal view. D, Ventromesial view. 



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