

‘ ne fee Euphyllopoda | G25 
ig Specimens from this collection in the old Fisheries Museum n Ottawa 
were dried up when I found them, but they show the characteristics of the 
oe species. There are about a dozen of them, and both sexes are represented; 
_ they seem to have been about one centimeter long, when collected. 
The slender terminal joint of the claspers (second antennae) of the males 
is much longer, more curved, but less tapering (more like B. coloradensis) than 
given in figures by authors. The serration (“teeth’’) on the basal joint of the 
claspers is distinct. A study of the specimens collected during the period of 
the Canadian Arctic Expedition makes me think, that as the males increase in 
size, the basal joint of the claspers becomes considerably longer, and gets the 
“telescopic” appearance as figured by Sars (Plates VI-VIII), and also shown 
on the largest (most mature) males I secured during the expedition. The terminal 
joint thus seems shorter in proportion, than with the younger males. 
It is interesting to see, from Halkett’s field notes, that fairy-shrimps 
were observed much later at Fullerton (in the fall of 1903), than I noticed during 
the Canadian Arctic Expedition. Females were thus collected on October 26 
through a hole in the ice of a pond about 7 feet deep, and more also on the 
succeeding days up to the beginning of November. On October 30, the thickness 
of the ice was measured to be 12-14 inches, the air temperature being about 
zero, Fahrenheit, and that of the water at the freezing point. The male Phyllo- 
pods had apparently died out then, but even so late as November 2, a female 
was obtained. Cladocera and copepods, of course, occurred all through the 
winter. ‘‘By testing the water in these ponds, containing Entomostraca, with 
nitrate of silver, it manifested the slighest bluish tinge. This means a very 
slight saline element in the water, but an element in some way or other intro- 
duced, for the ponds were certainly formed of fresh water, through the melting 
of the snow, and the water was that used for drinking and cooking purposes” 
(A. Halkett). It is probably a case of lagoons or brackish ponds similar to those 
observed during the Canadian Arctic Expedition. 
The record of six fairy-shrimps of this species (identification verified by 
Prof. A. 8. Pearse) from a pond at Point St. Charles, near Montreal, P.Q., given 
on p. 16, is certainly most extraordinary. Prof. A. Willey, who sent the speci- 
mens, informs me that the species has not been observed there since. They are 
mature individuals, about 2 c.m. long, the two females having ripe eggs in the 
ovisac. They were collected in a pond cut off from the river, in May-June, 
about 20 years ago, by E. Ardley Perhaps the (dried) eggs were brought with a 
ship returning from Labrador, and then hatched with the advent of spring 
(April) around Montreal, thus two months before it takes place on the arctic 
coast. I did not observe the species, nor any other Euphyllopoda, during my 
recent (1920) trip along the east side of James and Hudson bays, to beyond lat. 
56° N., so the only other records of it on the Labrador peninsula are those given 
on page 16 (Hamilton inlet and Fort Chimo). The only other southern record 
of it on this continent is White Horse, Yukon Territory (see p. 16), while in 
Europe it has been found in the Scandinavian peninsula and Carpathian 
Mountains (p. 17). 
Lirrt History In GREENLAND 
Wesenberg-Lund gives (1894) some data concerning the species as it occurs 
on the southern part of the west coast of Greenland, saying that they become 
mature in July, at a size of 14 mm.; and that the same animals have double 
this size in November.! Vanhdéffen (1897) says that the eggs develop there in 
May under the ice and secured young individuals at the end of May 1883. 
Wesenberg-Lund also says, that the ovisac appears at the same time as the 

1T have seen as large specimens of B. paludosa from West Greenland as those I collected upon Herschel 
island (see p. 19). ; ; 
