22 Crust, 
CRUSTACEA. 
Pandalus , but Ho epipod on the thirteenth somite ; the latter species 
possibly identical with Acanthephyra debilis (A. M.-Edw.). Miersia , 
Kingsley ( Ephyra , Roux) and the two following have perhaps more 
affinity to Hoplophorus and Pandalus than Atya. S. I. Smith, l. c. 
pp. 66-73, pis. xi. figs. 4-7, and xii. figs. 1-4. 
Meningodora , g. n. Integument throughout very thin and membrana- 
ceous ; body compressed laterally, and the carapax dorsally carinate 
anteriorly, with a short triangular rostrum, a branchiostegal spine and an 
antennal and hepatic sulcus, above which there is a carina which is con- 
tinued back along the dorsal limit of the branchial region, recalling the 
Penceidce ; antennal scales broad and foliaceous, all the other articular 
appendages essentially as in Miersia ; the branchise are also of the same 
structure and arrangement as in Miersia , except that there is but one 
arthrobranchia at the base of the external maxilliped. M. mollis , sp. n., 
75 mm., East Coast of United States, 34° N. lat., 1632 fath. S. I. 
Smith, l. c. pp. 73-76, pis. xi. figs. 8 & 9, xii. figs. 5-9. 
Eumiersia , g. n. External form of carapax and abdomen, oral append- 
ages, branchiae, and epipods, as in Pandalus ; structure of the thoracic 
legs more like those of Miersia , but much elongated ; epipods very small 
on the fourth pair, none on the fifth ; mandibles essentially as in Pan- 
dalus , but stouter, with larger molar and very thin expanded ventral 
processes. E. ensifera , sp. n., 125 mm., East Coast of United States, 
31-41° N. lat., 810-1394 fath. S. I. Smith, Z. c. pp. 77-81, pi. xiii. 
figs. 1-9. 
Paratya , g. n., for Ephyra ? cornpressa (Haan) = A ty ephyra compressa 
(Von Martens), Japan, fresh-water, because all the thoracic limbs (not 
only the four anterior) are provided with palpiform appendages. The 
described specimens appear to vary somewhat in the number of teeth on 
the rostrum. E. J. Miers, Ann. N. II. (5) ix, pp. 193-195. 
PaLAEMONIDAS (incl. ALPHElDiE.) 
Alpheu8 y metamorphosis ; W. Brooks in J. Hopkins Univers. Circul. 
No. 17, p. 247. 
A Ipheus comatularum , sp. n., Haswell, P. Linn. Soc. N. S. W. vi. p. 762, 
and Cat. Austral. Crust, p. 189, Queensland, invariably found clinging to 
the arms of Comatulay to which its markings give it a general resemblance. 
Pandalus brevirostris (Rathke) ; Hoek, Crust. * Willem Barents,’ p. 22, 
pi. i. fig. 10, Arctic Sea. 
Pandalus leptocerus and tenuipes (S. I. Smith, 1881), acanthonotus and 
carinatus, spp. nn., East Coast of United States, the last species, distinct 
by a keeled cephalothorax, falls evidently in Heterocarpus (Milne- 
Ed wards, 1881), the affinities of which have been misapprehended by its 
author. S. I. Smith, Bull. Mus. C. Z. x. pp. 58-66, the second and third 
figured pi. xiii. figs. 11 & 12, the last pis. x. fig. 2, and xi. figs. 1-3. 
Heterocarpus (A. M.-Edw., 1881), see Pandalus. 
Pontonia diazonce , sp. n., Joliet, Arch. Z. expdr. x. pp. 118-120, 
Mediterranean, ordinarily on Diazona violacea ; the shrimp has exactly 
the same pale rose colour as the Ascidian, and is therefore hardly visible. 
