117 
Prof. Jungerse 11 , very difffcult to see. — The ventral surface 
has 6 lamellæ (one for each of the 6 pairs of pereiopoda) and a 
large scutum (on the ahdomen). The pereiopoda are thick and 
apparently immobile; on the innerside close to 
the tip they have a little bud-like process. When 
made transparent the pereiopoda of the next larval 
stage are to be seen through the skin, and within 
Holophryxus 
the bud-like process a claw is seen, quite as in Acanthephyræ, 
the adult animal (fig. 21). There are 5 pairs of larva. A pereiopod. 
cleft pleopoda; they have a constriction about midway and are 
perhaps 2-articulated; but the articulation is not distinet. They 
have rather long natatory setæ. The uropoda are cleft, unarti- 
culated and have no setæ. 
It has been found unnecessary to give a longer description, 
all details being seen from the figs. 
Fig. 21. 
Larvæ of a Decapod (Pandalus propinquus?) (figs. 22—31). 
(St. 30b) 63° 04' N, 56° 32' W, 70 m. wire, 7—6—1908, ca. 15 spec. 
(1. and 2. stage). 
(St. 37b) 63° 47'N, 52° 12' W, 100 m. wire, 9—6—1908, 2 spec. (2. stage). 
(St. 229) 64 c 20'N, 53°03'W, 120, 100 and 80 m. wire, 29—8—1908, 
j 
ca. 10 spec. (5. stage). 
(St. 423) 65° 03' N, 54° 16' W, 120, 100 and 80 m. wire, 7-6—1909, 
ca. 60 spec. (25 spec. 2. stage, 35 spec. 3. stage). 
(St. 196d) 68° 40' N, 53° 12'W, 350 m. wire, 17—8—1908, ca. 40 spec. 
(4. stage). 
- (St. 124) 69° 17'N, 52° 14'W, 150 m. wire, 16—7—1908, ca. 25 spec. 
(2. and 3. stage). 
l.st (known) larval stage (figs. 22—30, st. I). 
The total length 7 mm. 
The body is very siender. The carapace inclusive of the ro- 
strum is about one third as long as the total length. Rostrum is 
half as long as the carapace; it is siender and spiniform, without 
any denticles. In the middle of the dorsal surface of the carapace 
there is a little blunt prominence; the antero-lateral corners are 
apically pointed. The posterior division of the body has 6 s eg- 
