BRITISH STALK-EYED CRUSTACEA. 183 



Ebalia tumificata, Mont. 



This species, like E. Cranchii, differs from E. tuberosa in 

 that its carapace is much more flat and hollowed, but to this we 

 must except the female of this species. The lateral margins are 

 prominent and rounded, with a flat sharp edge, whilst on the 

 anterior margin are two small projections immediately above and 

 between the eyes. Of the three prominences situate on the 

 thorax, one is proximate to the posterior margin, while the other 

 two are centrally placed between the fore and hind margin, one 

 on each side of the medial ridge. It is these two that in the 

 female are so remarkably different in appearance, from their 

 globose and swollen form, as to almost decide in the mind of the 

 student its specific value, as no such difference occurs in the 

 other two species to be described. The anterior pair of legs are 

 depressed, warty, and broad. In the abdominal segments the 

 fourth, fifth, and sixth joints are united. The size of this species 

 rarely exceeds half an inch across the carapace, and its colour 

 usually of a pale dull pink or yellow, occasionally speckled 

 with red. 



Although this species is rather rare, it is recorded by Prof. 

 Bell from Weymouth, Exmouth, Plymouth Sound, Belfast, and 

 off the Mull of Galloway. According to the reports of the British 

 Association, it has been taken on the coasts of Durham and 

 Yorkshire, as well as from the Hebrides, and a single specimen 

 from Shetland ; and is, according to the ' Cornish Fauna,' rare in 

 that county. "We have obtained it, in company with the former 

 species, from Guernsey, in comparatively deep water, where it 

 clings to the Algse ; also from mid-channel off the Sussex coast, 

 and occasionally from South Devon. 



So far as we have observed, it is with ova in the early months 

 of the year, so that it would spawn in the spring, This ova 

 greatly resembles that of E, tuberosa both in colour and size. 



Ebalia Cranchii, Leach. 

 The carapace of this species strongly resembles that of the 

 male, of E. tumificata, each of which species has the ridge from 

 the anterior to the posterior margins more prominent than the 

 transverse one, thus being unlike E. tuberosa; it is very finely 

 granulated, and has two additional tubercles to those of the 



