I. '08. 107 



Valencia (Walker) and Galway Bay (Melville). In addition 

 to these records, *5>. CrancJii has heen taken in Clew Bay and 

 Blacksod Bay and was found commonly in Bofin and Bally- 

 nakill Harbours, Co. Galway, during the periods in which the 

 marine laboratory was stationed there. 



Vertical range. — Off the Irish coast this species is essen- 

 tially littoral ; it has never, I believe, been taken in more than 

 10 fathoms of water. In the Adriatic it has been found be- 

 tween 20 and 30 fathoms (Heller) and in as much as 70 

 fathoms (Adensamer). 



Spirontocaris pusiola (Kroyer). 



PI. XV, figs. 6-8. 



Hippolyte pusiola, Kroyer, 1842, PI. iii, figs. 69-73. 

 Spirontocaris pusiola, Norman and Scott, 1906 {uhi syn.). 



This species is readily recognized from S. Granchi by the 

 simple and acute termination of the rostrum and by the num- 

 ber of segments (seven) composing the carpal joint of the 

 second pair of pereiopods. S. pusiola also possesses an epipod 

 at the base of the third pereiopod, which is absent in S. 

 Cranchi, but this seemingly constant characteristic has been 

 shown to be so variable in at least one species of Hippolytidae 

 (Smith, 1879, S. Fahricii) that its use in the present instance 

 may prove untrustworthy. The mouth parts scarcely differ 

 at all from those of the preceding species or of ^S. spinus. The 

 inner branch of the first pair of pleopods is, in the female, 

 much broader and shorter than in the corresponding part of 

 S, Cranchi (cf. figs. 2 and 8) ; in the male the differences 

 seem to be less pronounced (fig. 1^ and fig. 7). 



Size. — The largest specimen examined measures only 19 

 mm. ; Smith mentions a female 25 mm. in length. 



Colour in life. — The carapace and abdomen are dull semi- 

 translucent white with red, red and maroon, or red and white 

 mottlings, usually arranged in more or less regular series, 

 especially on the carapace ; the sixth somite is often more 

 deeply pigmented with red than the rest of the carapace. 

 The gastric and cardiac regions are generally of a dull greenish 

 tint, showing through the walls of the carapace. In one 

 specimen examined the red colouring was quite pale and a 

 broad band of pure white extended from the rostrum to the 

 apex of the telson. The eyes are black, with red stripes or 

 mottling on the stalk. The antennae and antennules are 



1 Among the numerous specimens of 8. Cranchi in the collection, the 

 only male observed is an immature specimen. It seems not unlikely 

 that the endopod of the first pair of pleopods (fig. 1) has not in this case 

 assumed its full complement of setae. 



