124 BULLETIN OF THE 



Subfamily AMATHIINAE. 



The only species of this group hitherto known is the Amatkia Rissoana 

 of the Mediterranean Sea. Two species are now added, as lbllows : — 



Amathia hystrix nov. sp. 



This species lias a close resemblance to .1. Rissoana, but differs in having 

 four instead of three spines on the gastric region. 



The dimensions of a male specimen are as follow? : Length of carapax, 

 including the rostrum, L.23; excluding rostrum, 0.7] ; breadth, including 

 lateral spines, 0.5)5; excluding these .-pines, U 4<S inch. 



Off Sand Key, May 11, 1869. Cast No. ltl. 138 fathoms. 



Amathia modesta nov. sp. 



Carapax armed with twelve spines shorter than in the other species of 

 the genus, the two on the gastric region being in fact only spiniforin tuber- 

 cles. The lateral and posterior spines are longest, that on the outer ex- 

 tremity of the branchial region equalling in length one fifth the width of 

 the carapax. Rostrum nearly as long as the post-frontal part of the 

 earapax; horns rather stout, divergent, and curving outward at the tips. 

 The spine before the eye is small, and that behind still smaller. No trace 

 of a spine at the anterior angles of the buccal area. Feet somewhat 

 shorter than in the oilier two species, and with no trace of a spine at the 

 summit of the meros-joint. 



Dimensions of a male: Length of carapax. rostrum and posterior spine 

 included, 0.84 ; from base of rostral horns to tip of posterior spine, 0.54 ; 

 breadth of earapax, including spines. 0.50; excluding spines, 0.36 ; length 

 of ambulatory foot of the first pair, 0.95 inch. 



Taken off Sand Key in 120 fathoms. 



s, BFAMH.Y ANOMALOPINAE. 



This group is indicated for the reception of the genus Anomalopus, now 

 for the first time described, with a single species. The crab differs from all 

 other Maioids in its elongated, subcylindrical carapax, and in the character 

 of its ambulatory feet ; those of the posterior pair being larger than those 

 of the penult pair. The orbital arch is less distinct than in other Eury- 

 podiidae, and the post-ocular spine much smaller. 



Anomalopus nov. gen, 



Carapax verv much elongated, almost subcylindrical; rostrum very long, 

 slender, bifid. Eyes without orbits ; prajorbital spine small, acute ; post- 



