506 



BErORT ON TttE ORDER SfOMAtOPODA—BIGELOJT. 



The distal segment of the exopodite exceeds in lengtli the proximal 

 segment, which bears six movable spines. The antennse of the firvst 

 ]3air are about equal to tlie carapace in length. The three basal seg"- 



Pig. 5. 



TELSON AND UltOPOllS OF LYSIOS'-JUILLA RIMINIENSIS. 

 Seen IVciti I,,-I,.w. Five time^ natural size, m — Jliivaljle spine. 



Qf'i't^ 



■~~~-c^ 



ments do not reach much beyond, the eyes. The antennary somite is 

 armed witli a pair of sharp lateral spines. The second antennje are 

 about as hmg as the first. The antennary scale is very small, about 

 one-third as long as the carapace. The raptorial limbs are well 



developed, but are not very long (tig. 7). 

 The carpus has a simple ridge on its an- 

 terior side ending distally in a S])ine. 

 The manus is stout and bears four movable 

 spines. The dactylus is slender and grace- 

 fid. The terminal spine is much larger 

 than the other hve but the one next to it is 

 not very small, as it is in L. acanthocarpus. 

 The appendages to the first two i^airs of 

 walking legs are almost circular in outline, 

 while they are strap-shaped on the next 

 pair. 



Color. — The coloration of this species is 

 peculiar and characteristic. The ground 

 color is an opaque white and this is 

 marked by transverse bands, one on the 

 rostrum, two or three on the carapace, and one on each of the segments 

 posterior to it (fig. 4). On one of my two specimens, a male, these bands 

 were fawn-colored, on the other one, a female, they were pink, and in 

 addition to this fawn color or pink, as tlie case might be, the band was 

 marked by a fine dark reddish brown stippling. In both specimens 



Fig. G. 



SIDE VIEW OF TELSON OF LYSTO 

 SQUILLA BIMINIENSIS. 



About 4i-2 times natural size. 



rh — Borsal median spine. 



«i.— Subniedian mobile spine. 



I. — Lateral spine. 



6(T.ftrf.— Sixth abdominal BOmite. 



a. —Anns. 



«. — Uropod. 



