04 Memoirs of the Indian Museum. [Vor. IV, 
that this is characteristic merely of a particular stage in the development of certain 
species. 
There is a single specimen of this form in the Indian Museum which appears to 
belong to the same species as that described by Milne-Edwards. ‘The chief characters 
are sufficiently well shown in the figures (figs. 81-83) to render detailed description 
unnecessary. 
I am inclined to agree with Hansen (1895, p. 69) that the form is in all pro- 
bability related to one of the species of Sguilla to which Miers applied the name 
Chioridella, though the possibility of some affinity with such species as S. fasciata, 
S. lata and S. scorpio cannot be overlooked. 
In the very elongated cylindrical eyes L. schmeltzii bears no resemblanc2 to eny 
adult species of Sguilla; it is probable, however, that this feature is subject to con- 
siderable modification during further growth. But the chief difficulty that is en- 
countered in an attempt to discover relations between this form and any species of 
Squilla hitherto known from the Indo-pacific region concerns the structure of the rap- 
torial claw. ‘The dactylus of L. schmeltzii bears seven teeth and, among species of 
Squilla with a single lateral process on the fifth thoracic somite, this number is found 
only in S. aymata, a species of isolated position and a peculiar distribution confined to 
southern latitudes. 
In the present state of our knowledge it seems impossible to suggest any plausible 
view of the relations of this form ; but it may prove considerably easier when the early 
post-larval history of the adult species is better known. 
‘The single specimen in the Indian Museum is registered as follows :— 
“a Port Blair, Andamans. J. Wood-Mason. If, II mm. 
Genus Pseudosquilla, Dana. 
1837. Squilla, Squilles trapues, H. Milne-Edwards, Hist. Nat. Crust., II, pp. 518, 525. 
1837. Gonodactylus, H. Milne-Edwards, ibid. pp. 528, 530 (partim). 
1849. Squilla, sect. Parallele, De Haan, in Siebold’s Fauna Japonica, Crust., p. 221. 
1852. Pseudosquilla (Guérin ined.) Dana, U.S. Explor. Exped., Crust., p. 621. 
1880. Pseudosquilla, Miers, Anu. Mag. Nat. Hist (5), V, p. 108. 
1894. Pseudosquilla, Bigelow, Proc. U.S. Nat. Mus., XVII, p. 498. 
Carapace little narrower in front than behind with conspicuous gastric grooves ; 
cervical groove usually absent, never visible mid-dorsally ; no carinae on carapace ; 
antero-lateral angles not spinous, cornea of eye rarely bilobed. Mandibular palp 
composed of three, rarely of two, segments. Merus of raptorial claw articulating 
terminally with ischium ; ventral surface of merus channelled longitudinally through- 
out its length ; upper margin of propodus finely pectinate externally ; dactylus not 
inflated at base and armed with at most three teeth excluding terminal one. Shorter 
ramus of last three thoracic limbs linear, composed of a single segment. Free 
thoracic and abdominal somites compressed, first five of the latter without sharp 
longitudinal carinae. ‘Telson with median carina and one to five pairs of additional 
carinae; submedian, intermediate and lateral marginal teeth, well-formed, the first 
