296 MR. BELL, HOR.E CARCINOLOGICE ; 



to which that name has been attached. The specimens in my possession were taken by 

 Mr. Cuming at the Galapagos Islands. 



Genus Myra, Leach. 



Char. Gen. — Testa ovato-globosa, postice tridentata. Orbita fissuris tribus profundis. Fossa anten- 

 nari<B obliquae. Pedipalpi externi caule exteriore ad marginem exteriorem dilatato. Pedes antici 

 longissimi, graciles, manibus rectis. Abdomen Maris segmentis a tertio ad sextum, — Fcemin^e a 

 quarto ad sextum coalitis. 



Of this genus a single species only has hitherto been described ; namely, Myra fugax 

 of Leach {Leucosia fugax, Fabr.). To this I have now to add four new species, of all of 

 which there are specimens in the collection of the British Museum and my own. In this 

 genus there is a close resemblance on the one hand to Ilia, and on the other to Perse- 

 phona. To the former it is connected by M. fugax, and to the latter by M. mammillaris ; 

 but from both it is distinguished by characters sufficiently marked. From Ilia it is at 

 once known by the absence of the peculiar twist of the hand, and from Persephona by the 

 dilatation of the external stalk of the pedipalps. The five species are all natives of the 

 Eastern Seas. 



Myra fugax, Fabr. Testa subglobosa, in medio elevata, non carinata, spina postica 



media, lateralibus bis longiore, spinis lateralibus compressis. 

 ? Rumph. Mus. 1. 10. f. C. 

 ? Browne, Jam. t. 42. f. 3. 



?? Cancer punctatus, Linn. Syst. Nat. p. 1054. 36. ? Herbst, i. p. 89. t. 2. f. 15, 16. 

 Leucosia fugax, Fabr. Suppl. p. 351. 

 Myra fugax, Leach, Zool. Misc. iii. p. 24. Edw. Hist. Nat. des Crust, ii. p. 126 ; Reg. Anim. Cuv., Crust. 



t. 25. f. 3. De Haan, Crust. Japon. p. 134. t. 33. f. 1. 

 Hab. in mari orientali. 



There is considerable doubt as to the identity of this species with the figures above 

 referred to of Brown and Herbst, as well as with the Cancer punctatus of Linnaeus. The 

 figure of Herbst very possibly belongs to M. carinata of this paper. 



Myra affinis, mihi (Tab. XXXII. fig. 2). Testa ovato-globosa, spinis posticis brevi- 

 bus, subsequalibus ; pedibus anticis thorace vix bis longioribus ; manu digitis tertia 

 parte longiore. 



Hab. ad insulas Philippinas. Mus. Brit. 



This species very much resembles M. fugax, but differs in several obvious characters, 

 shown in the following comparative view : — 

 Myra fugax. 



Anterior legs in the male three and a half times as 



long as the carapace. 

 Fingers half the length of the hand. 

 Middle spine long, acute. 

 Male abdomen more than twice as long as it is 



broad. 



Myra affinis. 

 Anterior legs not twice as long as the carapace. 



Fingers two-thirds the length of the hand. 

 All the spines short and obtuse. 

 Male abdomen much less than twice as long as 

 broad. 



