290 JOURNAL OP THE TRINIDAD 



Male : Tail parallel sided, the fifth segment being equal to the first in 

 width and a little more deeply excavated above, considerably smoother 

 than in the female ; the keels almost obsolete, about six times as long as 

 the cephalothorax. The manus larger than in the female, the width about 

 equal to half the length of the movable digit and much greater than the 

 width of the brachium ; the movable digit sinuate at the base with a dis- 

 tinct lobe, less than twice the length of the " hand back" the immovable 

 also sinuate so that when closed the two are separated at the base. 



Pectines longer than in the female, just reaching the end of the 4th 

 coxae ; the teeth longer than in the female, 17 in number. 



Length of female 47 mm. of carapace 5, of tail 28, width of 1st segment 

 2.8, length of fifth 5.2, width of fifth segment 2.5, of vesicle 1.8, length of 

 " hand back" 2.7, of movable digit 6. 



Length of male 43 mm., of carapace 43, of tail 26, width of tail 2.5, of 

 vesicle 1.5, length of vesicle 1.8. Locality : Trinidad. 



This pretty little species seems to be tolerably common in Trinidad. 

 The British Museum has received examples from Messrs. W. E. Broad- 

 way, J. H. Hart, R. L. Guppy and Lady Broome. 



Diplocentrus Gundlachii, Karsch, Zeits Naturwissen, (3) v. pp. 

 407408 (1880). 



This species has been very briefly described. 



The upper surface of the trunk is entirely smooth. The dorsal sur- 

 face of the hand is evenly arched, and nearly smooth. The first four 

 segments of the tail have 10 complete keels. 



Pectinal teeth 6-8. 



Length 30-32 millim. 



Locality : Trinidad and Cuba. 



Broleochactas nitidus, Pocock. (PL xxix. figs. 7-7a.) 



Female : Colour castaneous ; legs, vesicle, and lower surface a little 

 paler. 



Carapace perfectly smooth and polished, marked with a Y shaped 

 groove, the two upper arms of which embrace the ocular tubercle ; the 

 anteocular portion not mesially depressed, the lateral portion sloped away. 



Tergites perfectly smooth and polished, marked in front on each side 

 of the middle with a shallow depression ; the last tergite with four tuber- 

 cles (sometimes six) corresponding to the four superior keels of the tail 

 segments. 



Sterna smooth and polished. 



Tail robust, narrowed towards its distal end, the upper surface smooth 

 and polished, the first segment scarcely excavated longitudinally, the 

 excavation increasing in the depth to the fourth, the fifth flat posteriorly, 

 excavated in front, the supero-lateral keels well developed on the four 

 anterior segments, shining but obsoletely crenulate ; the superior keels 

 represented by a single posterior tubercle on the first segment, visible on 

 the others and obsoletely tuberculate, or crenulate, the upper angles of the fifth 

 not sharp but squared ; the lateral and inferior surfaces of the first three 

 segments smooth and polished, sparsely haired, not keeled ; of the fourth 

 obsoletely keeled and granular, the lower surface of the fifth somewhat 

 coarsely but irregularly granular, its posterior border denticulate. Vesicle 

 piriform coriaceous beneath, smooth and flat above, the aculeus stout at 

 the base, somewhat strongly but evenly curved in its distal half. 



Palpi robust ; humerus with its keels weak but granular, its anterior sur- 

 face flat, weakly granular ; brachium smooth, obsoletely costate ; mamts 

 large convex above, its inner portion produced, smooth, obscurely and 

 very feebly granular towards its inner edge, and very obscurely costate 



