Ediiioiuisoii — Sfoiiiafopoda in flic Bisliop Musrttin 289 



The collection of S(]uillitlae in the 1 bishop ■\Inseuni consists of 

 twenty-one specimens of this well-known and widely distrihuted 

 species. Of this numher seven, three males and four females, 

 were taken h\- Alvin Scale at Guam in 1900, one, a male from 

 the Marquesas by the same collector in 1902, five, three females 

 and two males, from the reef near Koko Head, Oahu, by the 

 writer in 1920, and four, two males and two females, from the 

 reef at \\'aikiki, Honolulu, 1)\' J. ^M. Ostergaard and the writer 

 in 1921. Four other specimens, two males and two females, 

 included in the collection are without data but probably are Ha- 

 waiian. 



The specimens are, in most details, quite typical. The basal 

 prolongation of the uropod in the specimens from Guam, the 

 Marquesas, and Oahu extends slightly beyond the tip of the 

 endopodite but does not reach the distal extremity of the exo- 

 podite, as is indicated in the description of the type specimen by 

 ]\Iiers. 



All the Bishop Museum specimens agree with the descrip- 

 tion bv llrooks of a specimen from Honolulu, in having the inner 

 spine of the prolongation of the uropod longer than the outer. 

 Lh'ooks states, however, that in the Honolulu specimen the distal 

 segment of the exopodite of the uropod is about as long as the 

 proximal segment. lUit none of the Pacific forms in the Bishop 

 Museum agree with his description in this feature, the distal seg- 

 ment of the exopodite being slightly less than five-eighths as 

 long as the proximal one. In this respect the specimens corres- 

 l^ond more closely with those taken in the region of Porto Rico. 

 according t(^ Ih'gelow's description. '' 



The presence of postero-lateral spines on the fourth abdo- 

 minal segment is apparently a variable characteristic of the species 

 even in the same locality. Two of the nine specimens from 

 Oahu show such spines, as do two of the seven specimens from 

 Guam. All bear postero-lateral spines on the fifth abdominal 

 seg"nient. 



' Bigelow, R P., Tlie Stom.-ctopoda of P.M-to Rico : Bull. U. S. Fisli 

 ■Comm., vol. 20, p. 155, 1900. 



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