54 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXVI. 



The carpocerite is cylindrical, rather slender, curved outward, and 

 surpasses the antennule by the length of the distal article; it is 5 

 times as long as wide, and sometimes up to 5.5 or 5.G times. 



Fig. 31. — Synalpheus LONr.ic.^RPf.s. a, frontal and antennal ueoion, male and fe- 

 male; C, CAKPOCERITE ; A', LARGE CHELA; K", CARPUS AND MEROPODITE OF LARGE CHELI- 

 PED; k', SMALL CHELIPED OF FIRST PAIR, MALE AND FEMALE; kk, FINGERS OF SMALL 

 CHELIPED OF FIRST PAIR; I, FOOT OF SECOND PAIR, MALE AND FEMALE; «! , p-QOT OF THIRD 

 PAIR, MALE AND FEMALE; in", DACTYL OF THIRD PAIR; W", DACTYL OF THIRD PAIR OF A 

 VERY ADULT SPECIMEN; J)', FIRST I'LEOPOD ; ))*, FOURTH PLEOPOD ; J)^, FIFTH PLEOPOD ; t, 

 TELSON ; tt. TELSON AND I'ROPODS, FEMALE ; U, UROPOD. 



The relative dimensions of the large chela are : Fingers 1 ; total 

 length 4.1 ; height 1.5 ; T. L. : H. = 2.73 : 1. The margin of the palm 

 presents forward a strong tubercle, ending in a fine point. The 

 movable finger has its point out of the perpendicular. The palm 



