25 i Prof. M'Intosli's Notes from the 



at the base, 4 basal, very short and arched, sutural well 

 shortened before the base, tlie surface, except in tlie scuteUar 

 region, is punctured, punctures not close nor so large as those 

 of the thorax ; the propygidium is evenly and rather closely 

 punctured ; the pygidiuni is more clearly punctured and the 

 punctures arc larger, and there is a narrow longitudinal space 

 in the middle of the base smooth ; the ])rosternuin, keel 

 slightly depressed in the middle, stria3 cariniform, joining 

 anteriorly, and it widens out at the base ; the mesosternura is 

 truncate anteriorly and the marginal stria complete, surface 

 punctate; the metasternum is smooth in the middle, with a 

 few punctures near the edges, and on the anterior margin is a 

 small round impression ; tiie anterior tibiae are 4-deutate. 



The peculiar oblong form of this species is unlike any 

 other that I know, but it must be placed near S. ItetuSy Er. 



JIab. Taylor Range, Queensland. 



XXX IV. — Xofes from the Gatty Marine Laboratory ^ St. An- 

 dreios.—^o. XX. By Prof. M'Intosii, M.D., LL.D., 

 F.R.S., &c. 



[Plates VII. & VIII.] 



1. On the Reproduction and Development of Pholue minuta, 0. Fabr. 



2. On the liritish Nephthydidie. 



3. On XepM/n/s (Af/laophantis) inennis, Ehlcrs, from the ' Porcupine.' 



4. On the Xephthydidae of the Gulf of St. Lawrence, Canada. 



1. On the Reproduction and Development of 

 Pholoe minuta, 0. Fabr. 



At St. Andrews ripe males are common at the end of June, 

 so that the breeding-season would seem to be in July and 

 perhaps also in August. On tlie west coast^ at Lociunaddy^, 

 specimens in similar condition were found in August. No 

 ripe females have been captured at St. Andrews, but examples 

 from Greenland present well-developed ova in July. 



Trochophores apparently of this species occur at the bottom 

 in the second week of September, presenting only four crena- 

 tions posteriorly to indicate the segments. The next stage 

 has a bluntly conical prostomial region which occupies about 

 half the bulk of the animal. Two small black specks are 

 situated posteriorly. At each side are the short tentacular 

 cirri. Four bristled feet follow, each having stout bristles of 

 the typical structure. Two spines occur on the dilated end 

 of the shaft in each, the longest being inferior. In addition 



