NORTH SIDE OF THE BAY OF BISCAY IN AUGUST, 1906. 409 



base of the rostrum on either side there are from to 3 spines, while 

 the posterior margin of the gastric groove may be wholly unarmed or 

 may be provided with as many as twelve spinules. There are from 

 2 to 5 spinules, often blunt and inconspicuous, on tlie outer margin of 

 the antennal scale, and from 4 to 14 on either side of the telson. 

 There may also be one or two stout spines on the internal margin of 

 the merus of third pereiopod. 



The eyes, as Caullery has observed, are devoid of black pigment, 

 except for an annular band at the proximal edge of the cornea. The 

 small and rudimentary exopod which Spence Bate has figured * at the 

 base of the third maxillipede of Spongicola venusta is not found in 

 S. Koehhri. 



The Hii.rley, like the Caudan, obtained several very young 

 specimens of this species. Those in the present collection measure 

 about 8 mm. in length and evidently represent the earliest free-living 

 stage, for some remain curled up as though still within the eggshell. 

 The rostrum and all the appendages of the cephalothorax are well 

 developed in these specimens, while the eyes are just as deficient in 

 pigmentation as they are in the adult. The pereiopods are fully 

 segmented, and chela? are present on the first three pairs, those of the 

 third pair being very noticeable owing to their large size. Conspicuous 

 exopods are retained on the first three pairs. The pleopods are well 

 formed, but the.uropods are not yet free and the telson is slightly 

 emarginate distally. 



An ovigerous female was found to be carrying sixty-two eggs. 



As in the case of the type specimens, the examples of *S^. Kochleri 

 collected by the Huxley were living in the sponge RegadreUa 

 phmnix ; as a rale a single individual was found inside each sponge. 



CARIDEA. 



Pasiph^id.^. 



Pasiphae sivado (Eisso). 



Station VIII. Surface. Many, 35-55 mm. 



„ IX. 240 fathoms. Eight, 59-69 mm. 



„ X. Surface. Many, 8-26 mm. 



XII. 246 fathoms. Twenty-nine, 21-40 mm. 



XIII. 412 fathoms. Two, 40 and 58 mm. 



Only once previously has this species been recorded from depths 

 exceeding 400 fathoms : by Adensamer, from 543 fathoms in the 

 Mediterranean. 



* Challenger Report, 1888, PI. XXIX, Fig. i". 



