540 REPORT ON THE ORDER STOMATOPODA—BTGELOW. vol.xvii. 



run forward very close to the edge and pass into the anterior lateral 

 angles. The first exposed thoracic segment has snbraedian and lateral 

 carinae as well as the rest. Its lateral processes recall the condition 

 found in S. nepa. Latreille. There are no ventral spines and there is a 

 strong and sharp lateral one curved until it points directly forward 

 and bearing on its i)Osterior side a flattened rounded lobe. The lateral 

 processes of the next two segments are, however, not bilobed, but are 

 broad and rounded and only slightly emarginate on the anterior side. 

 The small lobe on the fourth segment is rounded. 



The abdomen is rather compactly put together. Only a small num- 

 ber of carinse end in spines, namely, the usual six on the sixth segment, 

 all but the submedian on the fifth, and the lateral and marginal ones 

 on the fourth. The spine in front of the articulation of the uropod is 

 very nunute or absent. The length of the telson is five sixths of its 

 width at the base. It has an acute median crest ending posteriorly in 

 a stout spine. Of the six marginal spines the intermediate pair is much 

 the longest and stoutest. They all have short low carintie at their 

 bases. The anterior lateral carina' form no angles at their posterior 

 ends, but taper off gradually. The lateral denticles are very acute 

 and without elevation at their bases. There are about six oblique, 

 faintly marked rows of confluent pits on the dorsal surface of the 

 telson on each side of the crest, besides the row of pits on each that 

 runs nearly parallel to it. The ventral surface has a corresponding 

 series of obsolete pits and there are faint carinas also on the bases of 

 the submedian and intermediate spines, an unusual feature, other- 

 wise the ventral surface of the telson is perfectly smooth, there being- 

 no keel nor lateral carinte. 



The basal i^rolongatiou of the uropod is serrated along its inner 

 margin, and besides the large rounded lobe in the middle of the outer 

 side of the inner spine there is another similar lobe in the angle between 

 the two spines. The first joint of the exopodite is a little longer than 

 the distal one and bears six movable spines. 



The corneal portion of the. eyes is unusually large in proportion to 

 the size of the body, and is much greater in bulk than the pedicle. 

 The pedicle is small and inver.sely conical, while the corneal region is 

 voluminous and reniform. The ophthalmic segment bears a short 

 rounded process at the base of each eye. The lateral i)rocesses on the 

 next segment are subacute. The first antenuic reach nearly half the 

 length of the body, the first three joints being as long as the carapace. 

 The second antennte are as long as the carapace, and the antennary 

 scale is about Imlf as long. The raptorial claws, when folded, do not 

 reach to the posterior extremity of the carapace. The carpus has 

 merely a slightly elevated ridge on its anterior margin. The dactylus 

 has a minute ytrojection on its outer margin near the articulation. 



The appendages of the walking legs are linear. 



Color. — The eyes are yellowish, while the rest of the body is opaque 



