1921.J S. Kemp & B. Chopra : Stomatopoda. 299 



number of epipodites, these three species take up widely separate 

 positions in the genus. 



VVe are thus led to conclude that a reduction in the number of 

 epipods has takeu place in the genus Sqiiilla on several different 

 occasions and that the character, though possessing a definite spe- 

 cific value, cannot be used as a guide to the affinities of the 

 different forms. In this it resembles the mandibular palp, which 

 appears and disappears throughout the genus, apparently without 

 any regard to the affinities of the species concerned. In the list 

 given above the species in which the palp is suppressed are indi- 

 cated by a dagger (I). 



Squilla decorata (Wood-Mason). 



nji^ Squillii deco/ata, Kciii|), Mem. Imi. Mas. W, p. 2], pi. i, fi^s. 

 I ;,-!'.. 



(' .iOl/f. ];\ck and I'n.i Ik., Mergiii .\rchipela- ' Investigator.' i 9, '15 mm. 



go- 



Squilla microphthalma, Milne-Edwards. 



191,5. Squilla micr:>f)ht'icilii!a. 1-vemp, loc. cit.. p. ,51, pi. i, ligs. 17-20. 



Two additional examples of this species have recently been 

 obtained, but the identification of one of them is open to doubt. 

 This specimen, collected by the 'Investigator' in the Mergui Ar- 

 chipelago, differs from the others in the following particulars : — 



(i) The rostrum is much narrower and is about one and a half 

 times as long as wide. 



(ii) The cornea is decidedly more expanded, its breadth being 

 contained about two and a quarter times in the total length of 

 the eye. 



(iii) The eye reaches well beyond the end of the basal anten- 

 nular segment and fully to the middle of the ultimate segment of 

 the antennal peduncle. In typical 5. micro phl'ialma the eye does 

 not nearly reach the end of the basal antennulav segment and 

 barely reaches the base of the ultimate segment of the antennal 

 peduncle, much as in Brooks' figure of S. chlorida.' 



(iv) The lateral process of the fifth thoracic somite is short, 

 stout and directed strongly forwards, whereas in typical S. 

 micro pJifhalnia it is directed straight outwards. 



(v) The raptorial dactylus bears five teeth (the terminal one 

 included), all of which are well developed and evenly spaced. 

 The proximal tooth is not greatly reduced and does not lie close 

 against the next of the series as in those specimens of S. microph- 

 thalma which possess the same number of teeth. 



(vi) There are clear indications of a pair of subniedian carinae 

 on the fifth abdominal som.ite. 



The specimen is a male, with the carinae of the marginal 

 teeth of the telson much swollen. It dift'ers from Brooks' account 



1 Brook?, ■ Challenger' Rep., Stoiiiatnf'.. pi. ii, figs. ', ,3 (18S6). 



