194 DEPARTMENT OF THE yATAL SERVICE 



Fourth legs: basal joints with the characters shown in fig. 16. 



Fig. 16. Same. Basal joints of left fourth leg. 



11. Euchaeta norvegica. — As mentioned this is a eurytropic species occurring in 

 surface and vertical hauls both inside the Gulf of St. Lawrence and outside. It was 

 found in different stages corresponding to those detailed for C.finmarchicus and hyper- 

 horeus. Ovigerous females with single large ovisac full of blue eggs were found, 

 notably at Acadia station 48 on July 23, at No. 33 station 57 (Bay of Islands) on 

 August 9, and at Prince station 3 (Bay of Fundy) on September 15. Immature males 

 were as common as immature females, but the adult males were very rarely captured. 

 At Acadia station 11 (70-Om.) on May 30 one was found carrying a spermatophore ; 

 another at station 70 on July 26. The youngest captured was stage II with three pairs 

 of swimming legs and two-jointed urosome, first noted in No. 33 station 26 on June 26 

 in the subsurface haul (30-15 metres, towed for 20 minutes). 



12. Scolecithrix cuneifrons n. sp. — Of the species of Scolecithrix met with, the 

 commonest was minor, next to that dame, and then ovata. The appendages of danw, 

 for a certain length of time after preservation in formalin, have a delicate mauve tint 

 which enables the species to be recognized amidst a multitude of other Copepods. Sc. 

 ovata is characterized by the oval fifth legs of the female; in many specimens they 

 are not to be found. 



There were two other species, only one of which I am describing here since it 

 appears on table XI. I had at first identified it with securifrons but the structure of 

 the fifth legs of the male seems to differentiate it from that species. 



Description of 8c. cuneifrons: Acadia station 46, 150-0 fathoms. Length of 

 female, 4-5 mm.; of male 4-8 mm.; high frontal crest and acuminate postero-lateral 

 angles as in securifrons. but in cuneifrons there is an acumination in the male as well 

 as in the female (fig. 17). 



