CYCLOPOIDEA. 1059 



joints of the antennae are rather longer; the basal joint is short, with 

 the following oblong. 



Calanus curtus. 



C. stylifero similis, sed curtior. OepJialotJiorax ^-articulatus^ segmentis 

 4 posticis subasquis. Antennae anticce corpore pauhdo longiores, tenu- 

 issimce, duplo paulum curvatce, apicibus f route vix anterioribus ; set-is 

 perbrevibus, apicali anticd longiore, articulum nan superante. Abdo- 

 men 3-articidatum. Styli caudales tenues, fere abdominis longitudine, 

 vix recti, setis non longioribus, flexuosis, una vdlde externd. 



Near stylifer. Cephalothorax shorter, five-jointed, the four posterior 

 segments subequal. Anterior antennae a little longer than the body 

 (stylets being excluded, as usual), slightly doubly curved, tips in 

 line of beak; setae very short, anterior apical seta longest, but not 

 exceeding length of joint. Abdomen three-jointed. Caudal stylets 

 slender, nearly as long as abdomen, hardly parallel, setae of same 

 length nearly, spreading and crooked, one on outer side near 

 middle remote from apex, which is a little shorter than the others. 



Plate 72, fig. 10, animal, enlarged. 



Collected in the Sooloo Sea, fifteen miles west of Panay, January 

 27, 1842 ; also, in Straits of Banca, east of Sumatra, March 2, 1842. 



Length, one-twentieth of an inch. Nearly colourless ; red about 

 mouth and in thorax. This species differs from the preceding in its 

 shorter body, its posterior thoracic segment as long as the preceding, 

 its caudal stylets a little divergent, and the setae crooked. The an- 

 tennae are more slender and the terminal joints are much shorter; the 

 basal and following joints are as in the stylifer; the setae of the fol- 

 lowing joints are short, hardly exceeding the diameter of the joints, 

 excepting one on the eleventh (?) joint, which is more than twice 

 longer; the four joints following are quite short, and the next are 

 longer. The anterior apical and posterior penult setae are about as 

 long as the apical joint. The setae of the second pair of antennae 



