722 CRUSTACEA. 



Spherillo hawaiensis. 



Corpus minutissimd confertim granulatum et pubescens, valde convexum, 

 8egmentis thoracis rnargine postico plerumque concavis, segmento antico 

 juxta marginem postero-lateralem fisso, reliquis longitudine subcequis. 

 Antennae subtiliter hirsutce, pills dimidio laiitudinis articuli paulo bre- 

 vioribus, articulis flagelli subcequis. Appendices caudales subquadratm, 

 vix longiores quam latitudo apicalis, margine interno superne viso e<mar- 

 ginato articulumque minutum gerente. 



Body very minutely close granulate and pubescent, much convex, 

 segments of thorax having posterior margin mostly concave, ante- 

 rior segment with a fissure in the postero-lateral margin ; following 

 segments about equal in length. Antennas very short hirsute, the 

 hairs not half as long as breadth of joints, the two joints of the 

 flagellum subequal. Caudal appendages subquadrate, hardly longer 

 than the apical breadth, inner margin (as seen from above) having 

 an emargination, whence proceeds a minute joint. 



Plate 47, fig. 5a, animal, enlarged three diameters; b, antennae; c, 

 leg of fifth pair ; d, under view of abdomen ; e, caudal appendage, 

 upper view, showing the outer of the branches of the appendage, a 

 minute joint. 



Hawaiian Islands. 



Length of body, six lines. The small joint, which is properly the 

 outer branch of the caudal stylets, and the emargination in which it 

 lies, is not seen, except in an upper view ; and the breadth at the 

 extremity below the emargination, is as great as that anterior to it. 

 The pubescence and granulation of the body are only distinguishable 

 with a high magnifying power. The fifth pair of legs has the fourth 

 joint rather crowdedly spinous, there being about twelve pairs of 

 spines (often serrated, or divided at top), none longer than greatest 

 diameter of the joint. The fifth joint has about six pairs of spines, 

 some a little longer than those of the fourth joint. 



