CYCLOPOIDEA. UQ9 



is four-jointed, the first (a double joint), being nearly as long as the 

 other three, and very slightly arcuate. The apical setae, both anterior 

 and posterior, are but a little shorter than the joint. The eye-spot is 

 very minute. 



Genus CANDACE, Dana. 



Frons quadratus. Oculi inferiores obsoleti. Antennce anticce latissimb 

 divaricates, regulariter breviterque setigerce ; dextra maris articulatione 

 geniculans. Maxillipedes pedibus proximis major es, sub corpore projecti, 

 geniculati et inflexi, ^-articulati, setis nudis, longis. Pedes postici 

 maris impares, dextro subpreliensili. Abdomen mediocre. Styli caw- 

 dales breves, setis rectis et stride appressis. 



Front quadrate. Inferior eyes wanting. Anterior antennae very 

 widely divaricate, regular and short in the setae; the right male 

 antennae having a geniculating articulation. Maxillipeds larger 

 than the first pair of feet, having motion in the line of the body, 

 geniculate and inflexed, four-jointed, setae long and naked. Poste- 

 rior feet of male unequal, the right subpreh ensile. Abdomen of 

 moderate length. Caudal stylets quite short; setae straight and 

 close appressed. 



The species of Candace are remarkable for their quadrate front, ap- 

 pressed caudal setae, anterior antennae, both falling after a basal out- 

 ward curve, into the same straight transverse line, and in the colour 

 being generally in part black. Often the apical portion of the antennae, 

 for six to eleven joints, is black, and the body is banded with black 

 at each articulation; sometimes also the natatory feet are partly black. 

 In some specimens of one species there were black lines in the ante- 

 rior part of the thorax, and four black spots, as shown on Plate 78. 

 One specimen of another species was black throughout, excepting the 

 head, basal half of the anterior antennae, and the abdomen. The 

 colour is not constant for the species. 



The cephalothorax has usually three or four posterior segments. In 

 one species another articulation was observed across the middle ; and 

 in one of the following species the head was separated by an imperfect 

 articulation. The posterior angles are either truncate, obtuse, or long 



278 



