30 00NTRII3UTI0NS TO CANADIAN PAL^.ONTOLOCY. 



This mode of origin of the larval mines seems to be different from any- 

 thing hitherto described, and it is therefore difficult to decide to what 

 minor group of insects the creature constructing the mines belonged. In 

 the Museum of Comparative Zoology at Cambridge is a mine of Scolytus 

 rugulosus on cherry, which shows a somewhat similar distribution of the 

 larval mines, emerging and diverging from one point of the mating cham- 

 ber ; but the main galleries are reduced to almost nothing, and the figures 

 of the mines of this species given by Ratzeburg are altogether different. 



This specimen is one of those branches " of some conifei'ous tree," which 

 Mr. Hinde in his article on the glacial and interglacial strata of Scarboro' 

 Heights [loc. cit.) states to occur in the layers between the beds of clay 

 and sand found between his " till No. 1 " and " till No. 2," and which 

 are described as " flattened by pressure, their edges 



worn as if they had been long macerated in water." This is exactly true 

 of the present fragment. 



Interglacial clays of Scarboro', Ont. — G. J. Hinde. 



Family CURCULIONID^. 



Hylobiites. 



Under this new generic term, for convenience sake, I place the fragment 

 of a very well marked but imperfect elytron, which seems to come as near 

 Pachylobius as any of our genera, and to fall probably in the Hylobiini. 



Hylobiites cretaceus. 



PL II, fig. 5. 



The single specimen is the fragment of an elytron, including its entire 

 tip, showing that there were ten slender stri;e of which the fii'st and 

 tenth, second and ninth, third and eighth severally united at an acute 

 angle at slight and regularly inci'easing distances from the apex, while 

 the fourth and fifth are confluent just before reaching the eighth, and the 

 sixth and seventh are confluent and a little incurved just before reaching 

 the fiftt, and where they are scarcely farther from the tip than from the 

 inner margin ; these striai are deeply impressed, shining piceous, and dis- 

 tinctly punctate, the puncta slight and a little elongate ; the interspaces 

 are strongly convex, as is the elytron itself, and are minutely and pro- 

 fusely punctulate, the puncta more or less laterally confluent, at the apex 

 of the elytra forming irregular arcuate transverse ridges between the 

 stritf, having their concavity forwai'd. 



Length, 4-5""".; breadth l-o'""'. 



