MUNIDOPSIS. - 81 



Station 3429. 919 fathoms 1 male. 



Var. 2Mrvis2nna. 

 Station 3418. 660 fathoms. 1 male. 

 " 3419. 772 " 1 fem. ovig. 



" 3424. 676 " 1 male. 



" 3429. 919 " 1 male. 



" 3435. 859 " 18 males, 17 fem. (6 ovig.). 



" 3436. 905 " 6 males, 4 fem. (3 ovig.). 



In both G. rostrata and G. diomcdecc there is a curious sexual difference 

 In the male the proximal half of the telson is furnished on each side with 

 long, amber-colored setce which are entirely wanting in the female. The 

 same difference between the sexes is found in some species of Iliim'dopsis. 



G. diomcdcce is often invested with parasites. One of the males from 

 Station 3371 bears a PeUogaster, while seven specimens (5 males, 2 females) 

 of var. parvisjma house a Bopi/rus in the left branchial chamber. 

 The eggs of this species measure 3 x 2.5 mm. 



MUNIDOPSIS Whitea^-es. 



Araer. Joiiru. Arts and Sci., 3d Ser., VII. 212, 1S74. 



The type species of this genus is Munidopsis curvirosfra Whiteaves, from 

 the eastern coast of North America. The genus has been redescribed by 

 A. Milne Edwards, under the name Galathodes in the Bulletin of the Museum 

 of Comparative Zoology, Vol. VIII., p. 53, 1880. In the same paper Milne 

 Edwards proposed the two genera Oropliorrlujnclms and Elasmonotus for the 

 reception of certain species closely allied to Munidopsis. Orophorrhynchus has 

 already been united with Elasmonotus by Henderson. Elasmonotus was insti- 

 tuted to embrace the species characterized by a flat, quadrangular carapace 

 devoid of spines. But such species are connected with the typical Munidopsis 

 by so many intermediate forms, which may be assigned to either genus at the 

 whim of the describer, that I have united Elasmonotus and 3funidopsis as one 

 genus. As the genus Anoplonotus of Smith * does not seem to be sufficiently 

 distinct from Elasmonotus, it is here merged, with the latter, in Munidopsis. 



The union of Munidopsis, Orophorrhjndms, and Elasmonotus, necessitates 

 renaming two of Henderson's species, viz. Munidopsis hrevimana and Elasmo- 

 notus latifrons, since both of the trivial names had been previously employed 



* Proc. U. S. Nat. Mus., VI. 50, 18S3. 

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