GEOLOGY. 23 



various forms of Crustacea altogether unknown in zoology, 

 Farlca decipiens, stems of trees, and several kinds of marine 

 and fluviatile vegetables. A space of rock, about ten feet 

 square, was lately cleared in the presence of the author, every 

 patch of which contained fossil markings of some kind or 

 other ; and on one portion of flagstone now before me, seven 

 inches by five, I enumerate about eighty distinct imjoressions 

 of the Parha decipiens, or egg-sac of the pterogotus. The 

 locality is the Coral Den of Tealing, new to collectors, and the 

 habitat of a complete form of Pterogotus Anglicus, now in the 

 Watt Institution of Dundee, and rivaUing even the splendid 

 specimen from Balruddery, in the collection of Lord Kinnaird 

 at Rossie Priory, Besides several specimens of pterogotus, 

 with their huge prehensile claws and swimming paddles, and 

 scale-like sculptured segments, which often indicate individuals 

 five and six feet in length, " We have," says Mr. Page, " the 

 ceratiocaris, a shrimp-like form (ceratium, a pod, caris, a 

 shrimp), so called from the pod-Hke shape of its cephahc 

 shield ; the kampecaris, a diminutive form [kampe, a grub or 

 caterpillar), named from its caterpillar-like appearance, and 

 occurring in shoals in the Forfarshire flags ; the cumoid forms 

 found so abundantly in the mud-stones of Upper Lanark, and 

 which may be provisionally ranked as new genera, under the 

 titles Himantopterus (thong-winged) and Slimonia (after their 

 discoverer, Mr. Slimon) ; and, more recentl}'-, the quaint-looking 

 Stylonurus Powriensis, obtained by Mr. Powrie from the tile- 

 stones of Forfar, and so named from the peculiar style-like 

 form of its caudal appendage. All these, and other forms yet 

 undescribed, are totally new to science, are here "'^ for the 

 first time figured, and open up a fresh and inviting field to 

 the crustaceologist." 



In addition to the remarkable list of organisms thus enu- 

 merated, there are spines and other osseous fragments in the 

 greatest profusion — teeth, jaws, and foot-like markings. The 



■■■■ Advanced Text-Booh, p. 135. 



