Chilton. — lierision of the New Zealand Stoinatopoda. 



137 



segment, it must, I think, belong to S. armata. In it the terminal segment 

 shows little or no median fissure, and there are 12 small sharp teeth on 

 each side between the median line and the submedian spine, and 16 between 

 the submedian and lateral teeth, all these teeth being sharply pointed and 

 occasionally irregular, with a small one in between two of the ordinary 

 size. The raptorial limbs on each side bear 7 teeth on the dactyl. 



In the character of the terminal segment and also of the uropods this 

 small specimen appears to agree closely with Miers's description and figure 

 of S. gracilipes ; that species, however, is much larger — viz., 85 mm. long 

 (" 3J in.") — and presumably adult, and the dactyls of the raptorial limbs 

 bear 10 teeth. 



As Bigelow has pointed out, there are no secondary sexual difEerences 

 in S. armata. The endopodite in the first abdominal appendage in the male 

 is specially modified in the usual manner, and, as this appendage has not 

 been described in this species, I represent it in fig. 2. It will be seen that 

 it conforms closely to the type found in other species of Squilla, and a 

 detailed description of it appears to be unnecessary. 



Squilla affinis Berthold. 



Squilla affinis Berthold, Abhandl. k. Gesellsch. Wiss. Gottingen, vol. 3. 

 p. 26, 1845 ; Bigelow, Proc. U.S. Nat. Mus., vol. 17, p. 538, fig. 22^ 

 1895 (with synonymy). S. oratoria De Haan, Siebold's Fauna Japon. 

 Crust., p. 223, 1850 ; Stebbing, South African Crustacea, pt. 4. 

 p. 44, 1908. S. nepa Miers, Cat. N.Z. Crust., p. 89, 1876, and Ann. 

 Mag. Nat. Hist. (5), vol. 5. p. 25, 1880 (in part) : Chilton. Trans. N.Z. 

 Inst., vol. 23, p. 60, 1891. 



Bigelow has pointed out that under the name Squilla nepa two species 

 have been confused. These species differ mainly in the eyes, one form 

 having them small and with the corneal axis 

 about three-fourths the length of the per- 

 pendicular one and at right angles to it, 

 while in the other the eyes are large, tri- 

 angular, with the corneal axis oblique and 

 as long as or longer than the perpendicular 

 one. The form with the smaller eyes he 

 considers to be the true S. nepa Latreille, 

 while the other form he assigns to S. affinis 

 Berthold. Mr. Stebbing upholds S. oratoria 

 De Haan as prior to S. affinis Berthold, 

 and therefore the correct name for the 

 species. 



Squilla nepa was recorded from Auckland 

 by Heller, but there has been nothing to 

 indicate which of these two species was 

 intended, and up till the present time no 

 further specimen has been obtained by 

 local collectors, and consequently the oc- 

 currence of this species in New Zealand has been considered doubtful. 



Among the SquiUidae in the Dominion Museum kindly placed at my 

 disposal by Mr. Hamilton there is a single dried specimen which, though 

 imperfect, evidently belongs to S. affi.nis Berthold as described by Bigelow. 

 The eyes are imperfect, but there is sufficient of them left to show that thev 



Fio. 3. — HijuiUa (iffiitiK : TeKson. 



