





■■ 











■ 



■ 



■ 







■ . 













■ 









. 















PHRYNUS.— HEMIPHRYNUS. 



53 



Hab. North America, Texas and Lower California 4 — Mexico 4 ; Central America 



as far south as Nicaragua 4 {fide Kraepelin). 



The only example of this species available for description is the type, which is 

 erroneously ticketed " Burdwan, India," and formed part of Col. Hardwicke's collection. 



HEMIPHRYNUS. 



r * 



Hemiphrynus, Pocock, Ann. & Mag. Nat. Hist. (7) ix. p. 161 (1902). 



Very closely allied to Phrynus, but differing in that the tibia of the chela is armed above on its inner 

 edge with nine spines, of which the third from the proximal end and the fourth from the distal end are 

 the longest. These two long spines are apparently homologous to the two longest spines on this segment 

 in Phrynus, which are respectively the third from the proximal end and the fourth or third from the 

 distal end ; but whereas in Phrynus there is only one long spine between these two, in Hemiphrynus 



there are two. 

 TypejET. Icevifrons, Poc. 



Distribution. Central and South America ; Bahamas. 



In addition to the three species described below, this genus includes Phrynus 



ridiceps, Poc. [J 



Soc, Zool. xxiv. p. 540 (1893), and Ann. & Mag. Nat 



Hist. (6) xiv. p. 279 (1894)], from the Bahamas, and P. macrops, Poc. [Ann. & Mag. 

 Nat. Hist. (6) xiv. p. 281, t. 7. fig. 3 (1894)], from S. America. Both appear to be 



The first will fall alongside //. aztecus under heading «, and the second 



species 



alongside H. raptator under a' of the synoptical table that follows 



Synopsis of the Central- American Species. 



a. Underside of tibia of chela evenly convex and coarsely granular right up to 



the base of the spines, without a trace of a longitudinal crest dividing the 

 lower from the outer surface ; spines on tibia short, the longest less than 

 the width of the segment; first and third spines on lower side of hand 



minute &c. • 



b. Underside of tibia of chela flat, horizontal, forming a right angle with the 



outer surface, from which it is separated by a strong longitudinal ridge ; 



jthe lower side with at most a few coarse granules at least in its distal half; 



spines on tibia long, the longest considerably exceeding the width of the 



segment ; first and third spines on lower side of hand longish. 



First spine on upperside of hand longer than the third, as in H. aztecus, 



and as in that species the trochanter is armed with only four spines, the 



the middle of the anterior surface being small, not longer than 



aztecus, Poc. 



a' 



one on 



the superior spines 



raptator, sp. n 



' 





b'\ First spine on upperside of hand always shorter than the third ; anterior 



side of trochanter armed with five spines, one being on the middle of 



the surface . . . . .." . . '. . . ."• • • • ...... lavij r ons, Poc. 



■ i 











■ 



■ 



. 



