298 



Records of the Indian Museu 



III. 



[Vol. XXir, 



S. annandalei, Kemp. f.S. laevis, Hess. 



S. hiformis , Bigclow. S. mantis, Latreille. 



S. braziliensis^ Caiman. 5. p.niamensis, Bigelovv. 



S. empiisa, Say. S. raphidea, Fabr. 



S. yiigosa, Bigelow. 



On the first four thoracic h'mbs in the following species :- 



S. ajricana, Caiman. 

 fS. armata, Milne-Edwards. 



5. hoops, Kemp. 

 tS. costata, deHaan ■ 



S. dccorala (Wood-Mason). 

 fS. desmaresti, Risso. 



S. fasciata, de Haan. 



S. foveoiala, Wood-Mason. 



S. gilesi, Kemp. 



S. gonvpetes, Kemp. 

 tS. hieroglyphic a. Kemp. 



S. holosckista, Kemp. 



S. interrnpta, Kemp. 



.S. investigatoris, Lloyd. 



.S. lata, Brooks 



5. latreiUei (Ej'd. and Soul.) 



■\S. leptosquilla, Brooks. 

 fS. lirata, sp. nov. 



5. massavensis , Kossmann. 



5. microphthalma, Milne-Edwards 



S. mikado, sp. nov. 



S. mitlticarinata , While. 



S. ncpd, Latreille. 



5. oratoria, de Haan. 



,, var. perpcnsa, Kemp. 

 jS. polita, Bigelow. 



.S. prasino-lineaia, Dana. 



S. qtdnqiiedentata, Brooks. 



S. stridnlans, Wood Mason. 

 fS. tenuispinis, Wood-Mason. 



S wood-innsoni, Kemp. 



On the first three thoracic limbs in : — 

 .S. dubia, Milne Edwards. 



And on the first two thoracic limbs onlv in :— 



t S. gihba, Nobili. 

 S. supplex, Wood-Mason. 



t S. Scorpio, Latreille. 

 t ,, var. immaciilata , 



Kemp. 



In the majority of Indo-pacific species epipods are found on 

 the first four thoracic limbs, but there are certain notable excep- 

 tions. In Squilla raphidea and the closely allied S. annandalei they 

 are present on all five limbs and this also occurs in the Australian 

 S. laevis. S. raphidea and its ally on other structural characters 

 form a well-defined group in the genus, but 5. laevis is not related 

 and appears to be rather an isolated form, allied perhaps to 5. 

 hieroglyphica. Apart from the possession of the full series of epi- 

 pods none of these species possess characters which can be re- 

 garded as primitive. 



We have not found any Indo-pacific species in which epipo- 

 dites are found on the first three thoracic limbs only. Of those 

 which possess them only on the first two thoracic limbs, 5. gibba 

 seems without doubt to be allied to the forms with reduced eyes (the 

 Chloridella section), S. supplex is a species of uncertain affinities, 

 while S. Scorpio perhaps finds its nearest allies in S. lata, S. gilesi 

 and S. armata. Classified on anv other character than that of the 



t In this species the mandibular palp is absent. 



