CATAPAGURUS DIOMEDE^. 57 



runs from the carpal articulation to the base of the immovable finger ; scat- 

 tered hairs are fount! on tlie chela ; they ax-e most numerous near the tips of 

 the fingers. 



The ambulatory legs are pretty smooth, with rounded margins. The 

 dact3lus of the first pair is equal to the propodite in length, while the dact}'- 

 lus of the second pair exceeds the propodite. The dactyli of both pairs are 

 furnished with stiff seta?, most conspicuous along the lower margin ; a curved, 

 sharp nail tips the dactyli. At the distal end of the upper margin of the 

 carpi a small, sharp tooth is seen projecting over the proximal part of the 

 propodite. 



The fourth pair of legs is sub-chelate, the rasp upon the propodite is 

 formed by a single series of scales. The propodite of the fifth pair of legs 

 is furnished with a tuft of long sette and a broad rasp whose posterior margin 

 is concave. 



The left side of the abdomen carries three two-branched appendages. 

 The telson is divided by a broad notch into two somewhat unsymmetrical 

 lobes ; the posterior margin is spinulose. 



Length of body, 23.5 mm. ; length of carapace, 9 mm. 



Station 3368. 66 fathoms. 2 males, without carcinoecia. 



These specimens agree closely with types of E. califoniiensis in the U. S. 

 National Museum from Catalina Harbor, Cal., 30 to 60 fathoms. 



MM. Milne Edwards and Bouvier have lately described and figured a 

 Eupagiirus from Sand Key, Fla., under the name E. smithii* Since this name 

 had been previously used by Mr. Benedict for another species of Eupagunis 

 from the Gulf of California,t it becomes necessary to change the name of 

 Milne Edwards and Bouvier's species, which may be called Evpa(junis houvieri. 



CATAPAGURUS A. M. Edw. 

 Bull. Mu8. Comp. Zool, VIII. 46, 1880. 



Catapagurus diomedeae F.«. 

 Plate XIII., Fig. 2-^. 



Bull. Mus. Comp. Zool., XXIV. 171, 1893. 



The carapace is smooth and naked, and divided into an anterior and pos- 

 terior section by the cervical groove. The anterior margin projects slightly 



• Mem. Mus. Comp. Zool., Vol. XIV., No. 3, p. 140, Plate X. Fig. 1-12, 1893. 

 t Proc. U. S. Nat. Mus., XV. 4, 1892. 

 8 



