198 On the Decapod Crustacea of the North Atlantic. 



the following Table, in which the bathymetrical habitat is 

 given approximately in even hundreds of fathoms, habitats of 

 less than one hundred fathoms being indicated by —100; the 

 diameter is the approximate average of the longer and shorter 

 diameters, usually of several eggs from two or three indivi- 

 duals ; and the number, or estimated number, of eggs is 

 for a single individual of medium or large size, or the extremes 

 of variation in two or more individuals. 



Diameter and Number of Decapod Eggs. 



Species and Bathymetrical Habitat. 



Brachyuba. 



Callinectes hastatus .... 

 Geryou quinquedens .... 



fathoms. 



-100 



100 to 1100 



Anomura. 



Latreillia elegans —100 to 200 



Eupagurus hernhardus . . — 100 



politus -100 to 600 



Parapagurus pilosimanus. . 300 to 2200 



Munidopsis curvirostra . . 100 to 1300 



crassa 1700 to 2600 



rostata 1100 to 1400 



Anoplonotus politus .... — 100 to 200 



Macrura. 



Pentacheles nanus 700 to 1900 



Homarus americanus .... —100 



Crangon vulgaris — 100 



Sclerocrangon Agassizii . . 400 to 1000 



Pontophilus norvegicus . . 100 to 600 



brevirostris — 100 to 200 



abyssi 1900 to 2200 



Sabinea princeps 300 to 900 



Sarsii 100 to 200 



Glyphocrangon sculptus. . 1000 to 1400 



longirostris 800 to 1100 



PaleemoD forceps — 100 



Palsemonetes vulgaris .. —100 



Nematocarcinus ensiferus 600 to 2000 



cursor 400 to 800 



Acanthephyra Agassizii. . —100 to 3000 



brevirostris 1400 to 3000 



gracilis 1600 to 2500 



Pasiphae tarda 100 to 200 



princeps 400 to 1400 



Parapasiphae sulcatifrons 500 to 3000 



Diameter. 



millim. 

 0-28 

 0-74 



0-45 



0-57 



1-12 



1-2 



1-6 



3-5 

 3-7 

 1-1 



077 

 1-9 



0-47 



2-5 



1-1 



0-7 



07 



2-8 



1-3 



3-0 



3-0 



0-6 



0-7 



0-08 



0-64 



0-85 



0-70 



2-5 



2-0 



3-5 



4-2 



Number. 



4,500,000 

 47,000 



1,660 



2,000 



14 to 52 



230 



25 



1250 to 1500 

 12,000 to 20,000 



353 



97 



86 



7000 



360 



16,000 to 21,000 



20,000 



5,000 



21 

 94 



15 to 19 



New Haven, Connecticut, U. S. A... 

 December 1885. 





