254 Prof. Mlntosh's Notes from the 



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

 shortened before the base, the surface, except in the scutellar 

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

 of the thorax ; the propygidium is evenly and rather closely 

 punctured ; the pygidium is more clearly punctured and the 

 punctures are larger, and there is a narrow longitudinal space 

 in the middle of the base smooth ; the prosternum, keel 

 slightly depressed in the middle, strise cariniform, joining 

 anteriorly, and it widens out at the base ; the mesosternum 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 ; the anterior tibise are 4-dentate. 



The peculiar oblong form of this species is unlike any 

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



Hab. Taylor Range, Queensland. 



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

 drews.— ^o. XX. By Prof. M'Intosu, M.D., LL.D., 

 F.R.S., &c. 



[Plates VII. & VIII.] 



1. On the Reproduction and Development of P/io/oe minuta, O. Fabr. 



2. On the liritish Nephthydid;^. 



3. On NephtJiys (Af/laophanxs) inerniis, Eblers, from the ' Porcupine.' 



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



1. On the Ueproduction 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 the west coast, at Lochmaddy, 

 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 tlie bottom 

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

 tions posteriorly to indicate the segments. The next stao-e 

 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 



