520 



REPORT OX THE ORDER ST02IA10P0DA—BTGEL0W. vol.xvu. 



carinse of the lateral si)ines. The rest of the dorsal surface is marked 

 by about teu curved rows of fine shallow pits on. each side of the crest. 

 The ventral surface is smooth, except for similar but somewhat faiater 

 lines. The six marginal sx)ines are x)rominent and acute and are immo- 

 bile. The median sinus is very deep. The submedian teeth are obtuse, 

 wliile tl'.e intermediate ones are acute. 



Eeturningto the anterior partof thebody (fig. 11), the eyes immediately 

 strike one as out of keeping with the other characters, for while the 

 corneal part of tlie eye is flattened and set ob- 

 liquely to the peduncle, it is relatively small, 

 the corneal axis being only about four-fifths as 

 long as the peduncular one. The ophthalmic 

 segment is emargiuate in front. The first au- 

 tennoB are about half as long as the body, while 

 the second pair are not quite half as long as 

 the first. The antennary scale is about half as 

 long as the carapace. The carious of the rap- 

 torial claw has on its anterior edge a longi- 

 tudinal crest, the distal extremity of which is 

 an acute angle, and beyond this there is a small 

 blunt tubercle. The outer (posterior) edge of 

 the dactylus is a compound curve, being slightly 

 sinuate near its base, but there is no basal 

 tubercle. The six teeth are well developed and 

 progressively longer toward the distal extrem- 

 ity. The appendages of the walking legs are 

 linear. The first joint of the exopodite of the uropod is much longer 

 than the second, and bears eight or nine raovable spines. The inner 

 margin of the basal prolongiition of the uropod is serrated, and there 

 is a large rounded lobe on the outer side of the inner spine. 



Color. — The alcoholic specimens have the body covered with a mottled 

 pattern of dark pigment cells. 



Size. — The length of the largest specimen in the collection is 4.15 cm. 

 Locality. — The collection contains six males and one female collected 

 by t\\Q Alhatross in March, 1888, from the stations not over 13 miles apart 

 in the Bay of Panama where the depth was from 7 to IG fathoms, and 

 the bottom green mud (:N^os. 18177-18479, U.S.N.M.). There is also 

 one poorly preserved specimen from off Manzanillo, Mexico (No. 18480, 

 U.S.X.M.), that seems to belong to this sj^ecies although the telson is 

 somewhat different from the Panama specimens. 



Fisr. IS 



EXPOSED THORACIC SEl 

 MENTS OP SQUILLA PAKVA 



i natural size. 



SQUILLA PEASINOLINEATA (Danaf) Miers. 



Squilla pras'mol'meaia, f Daxa, Crust. IT. S. Expl. Exped., xiii, p. 620, 1852. — 

 Miers, Aua. aud Mag. Nat. Hist. (5) v, p. 19, 1880. 



A specimen in the collection (No. 11290, U.S.N.M.) corresponds 

 pretty closely to Miers's description of a specimen that he doubtfully 

 refers to Dana's species of this name. Unfortunately the source of this 



