Bdmondsou — Stoniatof^oda in the Bishop Museum 291 



spine on the rostrum, and in the presence of eight carinae besides 

 the median ridge on the telson. 



Miers also indicates the truncated lateral margins of the 

 second and third exposed thoracic segments, and the presence of 

 a distinct circular spot, green in color, bordered by a pale margin, 

 on each side of the carapace, as specific characteristics distinguish- 

 ing both this species and PscudosquUla oniata Miers from Pscudo- 

 squiUa ciliafa. 



Of the eleven specimens of this species in the Bishop Museum, 

 six, four males and two females, were taken from Waikiki reef, 

 Honolulu, during 1920 and 192 1. One specimen, a female, was 

 taken in Kahana Bay, Oahu, in 192 1. Four other specimens, 

 one male and three females, although without data are probably 

 from Waikiki reef. 



Figure I represents the male accessory organ of the first 

 abdominal appendage of this species. On comparing this with 

 the male accessory organ of PscudosquiUa eiliafa, as figured by 

 Brooks, the similarity of these structures in closely allied species 

 is obvious. 



The color of the living specimens obtained on Waikiki reef 

 in August, 1921, was dark green above, with a narrow line of 

 pink color on the posterior border of the exposed thoracic and 

 first five abdominal segments. The fringe of the uropods, an- 

 tennal paddles, and swimmerets was deep pink. In the largest 

 specimen the right raptorial limb was bright pink in color while 

 the left was green with only a faint indication of pink on the 

 dactylus. The deep green spots on the carapace were very evi- 

 dent in the living specimens. The alcoholic specimens in the 

 collection have, without doubt, lost their natural color. They 

 are light brown, a few of them nearly white except the eyes, 

 which have remained dark brown. 



The largest specimen in the Bishop Museum collection, a 

 female, is 55 mm. in length from the tip of the rostral spine to 

 the extremity of the submedian marginal spines of the telson. 

 A specimen in the British Museum is reported by Miers to be 

 3^ inches in length. 



L 13 ] 



