522 UEPOr^T ox THE OIWEB STOMATOPODA—BIGELOW. vol.xvii. 



ventral \yA\v are lar<>e and triangular. The lateral sjiines of tlie next 

 two segments are longer than in ;iS'. mantis and acute, and on the first 

 ore there is a small additional anterior lobe. The submediau carinas are 

 well marked, and the first five abdominal segments have eight carina), 

 all of which cud iu spines except the submediau ones and the intermedi- 

 ate of the first two segments. The sixth segment has six cariniB ending 

 in vspines and a spine on the anterior side of each nropod. The telson is 

 quite difierent from that of aS'. mantis. The crest is low and narrow, and 

 ends in a spine. The general surface of the telson is smooth except for 



eight or ten lines of very small, shallow i^its, 

 arranged symmetrically on each side of the 

 ^ median line. It has a rather long ventral 



1 keel. There are six marginal spines, rather 



long and slender, and witli basal carinne. 

 --. d The anterior lateral carina' also end in a small 



projecting angle. There is scarcely any ele- 

 vation at the bases of the denticles, while 

 i in S. mantis there is a distinct ridge border- 



• ing the telson in both sexes. Another dif- 



ference of importance between these two spe- 

 i'''«- 1^- cies is in the eyes. In 8, mantoidea, while 



the corneal axis is longer than the ])eduncu- 



EYE OF SQUILLA MANTOIDKA. , , /a - x • , • t\ (y , . • i • 



lar one (u:-)), it is unlike o. mantis n\ being 



Twice natural size. • j. t i^ ^ T • • j.1 



«;..-pe.hmcuiar axis. trausverse instead ot oblique, gi\ing the eye 



t< .- o.uea a.x,=,. _^ Very different shape (fig. 14). The antennte 



are rather long, the first three segments equaling the carapace iu length. 

 The second autenine only reach a little way beyond the second joiut of 

 the first. The antennary scale is a little over six-tenths the length of 

 the carapace. The raptorial claw is long, when folded reaching back 

 as far as the median posterior edge of the carapace, and is more slender 

 than in S. mantis. The antepenultimate joint has but one spine, not 

 two. The dactylus is not sinuate on its outer margin, and the distal 

 ones of the six teeth are very long, much longer than the proximal 

 ones, the length decreasiug gradually towards the base of the dactylus. 

 The appendages of the walking legs are linear. The inner basal spine 

 of the uropod is twice as long as the outer one, bears a small lobe on its 

 outer margin and is finely serrated on its inner margin. The distal 

 joint of the exopodite is shorter than the j)roximal one, being teii- 

 thiiteenths of its length when measured on its ventral side, while in 

 8. 'niantis the two joints are equal, measured in the same way. The 

 proximal joint bears eight movable spines. 



Color. — The alcoholic si)ecimen shows a dark baud on the rostrum, 

 three irregular bands on the carapace, and a band on each segment of 

 the hind body exce]>t the sixth abdominal. The posterior half of each 

 uropod is black. 



Size. — Length of body, 12 cm. 



