542 BEPOBT ON THE ORDER STOMATOPODA—BIGELOW. vol.xvii. 



tubercle beneath the spine. On each side of the crest there is a 

 shorter carina running nearly ])arallel with it. Outside of this there 

 is another carina taking a similar course but extending to the base of 

 the submedian spine, where it ends abruptly. The proximal two-thirds 

 of this carina is repeatedly interrupted, so that this part of it consists 

 of a series of seven or eight elongated tubercles. Then next outside 

 of this one there is a series of six parallel carinas running obliquely 

 outward and backward. The fifth one of these extends on to the inter- 

 mediate spine and tapers gradually to its tip. Then two more carina'., 

 one beginning at the posterior edge and running along the lateral mar- 

 gin and another parallel one just inside of this. They both taper off" 

 on the lateral spine. 



The ventral surface of the telson is nearly smooth except for a low 

 keel and two small tubercles, one each side of the anus. The sixth 

 abdominal segment has, besides the usual six dorsal spines, a small 

 marginal spine on each side on the front edge of its articulation with 

 the uropod. 



The presence of three or four small teeth on the posterior margin of 

 the fifth and sixth abdominal segments between the submedian and 

 intci'mediate spines on each side is one of the 

 unusual features of this si^ecies. Anotlier one is 

 tbe presence of from eight to twelve or perhaps 

 more long slender teeth on the inner edge of the 

 basal prolongation of the uropod. The lobe on 

 the inner spine is at about its middle. The prox- 

 imal joint of the exopodite is but slightly longer 

 than the distal one and it bears from eight to 

 thirteen movable spines; eight is probably the 

 usual number. 



^'e- 2^- The rostrum in this species is i^rovided with 



EXPOSED THORACIC SEG- uiarglual cariuie, but has no median one. The 



MENTS OF SQUILLA " " 



KUGosA. lateral cariuie of the carapace are continued into 



Ab„ui iji t.n.es nntonu s.ze. tlic au terolatcral spines. The lateral spine of the 



fifth thoracic segment (fig. 24) extends outward 

 prominently at right angles to the body. It is very much compressed 

 dorso-ventrally and is lauce-sha])ed. The ventral spines are distinct and 

 triangular in outline. They are compressed obliquely and are straight. 

 The lateral spines on the next two segments point strongly backward. 

 The eyes are large and broadly triangular, the corneal axis being ten- 

 sevenths the length of the peduncular one and oblique to it. The 

 ophthalmic segment is not at all covered by the rostrum, is acute in 

 front and only very slightly produced into lobes at the bases of the 

 eyes. The lateral lobes of the first anteunary segment are acute. The 

 first antennje are considerably longer than half the length of the body. 

 The second antenna^ only reach a little beyond the second joints of the 

 first. The anteunary scale is a little more tlian ('(jual to half the length 

 of the carapace. The raptorial claw is long, and when folded reaches 



