286 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Upper antennae as long as the body ; lower about half 

 as long. 



Genus Ischyrocerus, Kroyer, 1838. 

 Ischyrocerus minutus, Lilljeborg. 



Three females with ova. Length 4 mm. 



As far as can be judged in the absence of males (always 

 rare in this species) these specimens agree in every respect 

 with those that occur on the British coasts. 



Explanation of Plates. 



Plate XV. 



Fig. 1. Carapace of Trichocarcinus recurvidens (Sp. B.). 



Pig. la. Eye of same. 



Fig. lb. Under side of front. 



Fig. 2. Eye of T. oregonensis (Dana). 



Figs. 3 — 6. Heteromysis odontops, n. sp. 



Fig. 3. Head; fig. da, base of antennules enlarged. 



Fig. 4. First and second legs {a — b). 



Fig. 5. Last leg. 



Fig. 6. Telson. 



Figs. 7 — 10. Janira occidentalism n. sp. 



Fig. 7. Head and first segment. 



Fig. 8. Telson and part of previous segment. 



Fig. 9. First leg. 



Fig. 10. Third leg. 



All drawn with 2 in. objective, except 3a, 5, 6, and 10 

 with 1 in. 1 natural size. 



Plate XVI. 



Fig. 1. Crangon munitellus, n. sp. Twice the natural 

 size. 



