CHAP. III. } TENERIFFE TO SOMBRERO. 181 
On the morning of the 4th of March we sounded in lat. 
21° 38’ N., long. 44° 39’ W., in 1900 fathoms, with No. 1 line, 
the “ Hydra” and 3 ewt., the slip water-bottle, and a thermom- 
eter. The bottom was gray ooze, as on the day before, and 
the bottom temperature 1°-°9 C. The dredge was put over at 
8 a.m. It was intended to attach a “ Hydra” tube with disenga- 
ging weight a little below the bottom of the dredge: the weight 
slipped, however, close to the surface, and the dredge was low- 
ered in the ordinary way with 1 ewt. 500 fathoms in advance. 
The dredge came up about four o’clock with a small quantity of 
ooze containing some red clay, a large proportion of calcareous 
débris, and many foraminifera, chiefly Orbulina and Pulvinu- 
lina. 
Warped in the hempen tangles there was a fine specimen of 
a handsome decapod crustacean, having all the principal charac- 
ters of the family Astacidee, but different from the typical dee- 
apods in the total absence of eye-stalks and eyes. Dr. von 
Willemoes-Suhm gave this interesting deep-sea form such a 
preliminary examination as was possible in the absence of books 
of reference. I abstract from his notes. W7lemoesia* lepto- 
dactyla, n.g. and sp. The single specimen procured (Fig. 42), 
which is a male, is 120 mm. in total length and 33 mm. in 
width across the base of the cephalo-thorax, which is 60 mm. in 
length. Three rows of spines, one in the middle line and one 
on each side, run along the cephalo-thorax, which is divided by 
a transverse sulcus into an anterior and a posterior part, the 
former occupied by a central gastric and lateral hepatic regions, 
and the latter by a central cardiac and lateral branchial regions. 
* In my first notice of its capture, in a letter published in Nature in May, 1873, 
this crustacean was described by Dr. von Willemoes-Suhm under the name of Dei- 
damia leptodactyla. In Nature of the 19th of October, 1873, Mr. Grote, one of the 
curators of the museum in Buffalo, U.S., pointed out that Deidamia was already oc- 
cupied by a genus of Sphingide, and proposed for the crustacean the generic name 
Willemoesia, which is accordingly adopted. 
