576 Mr. T. Vernon Wollaston on the 



which are perfectly parallel, and are likewise very straightly 

 truncated in front), and in its rostrum being rather long 

 and robust, but of equal breadth throughout, in its eyes 

 being very largely developed, in its elytra being separately 

 recurved at their extreme apex, in its third tarsal joint 

 being small and almost simple, and in its four anterior 

 coxse being very widely and subequally distant, whilst the 

 posterior ones are, if anything, even less remote than the 

 others, a character which is most unusual amongst the 

 Cossonids. The examples now before me (all of which 

 seem to pertain to a single species) are from the collection 

 of Mr. Pascoe, and were captured by Mr. Wallace at 

 Dorey in New Guinea, as well as in Batchian, Makian, 

 and Ceram. 



96. MACRORHYNCOLUS (Wollaston, Trans. Ent. Soc. 

 Lond. 33. 1873). The present genus, which I estab- 

 lished a short time ago to receive a Cossonid which was 

 obtained by Mr. G. Lewis in Japan, and of which a 

 second species (from Ceylon) is now before me, communi- 

 cated by Mr. Fry, is somewhat intermediate between the 

 preceding groups and Rhyncolus ; nevertheless I believe 

 that it is, in reality, far more nearly allied to the former 

 than to the latter. From Rhyncolus it differs, principally, 

 in the body being relatively longer, narrower, and more 

 parallel, it being less convex, and without any tendency 

 to be ovate (or expanded behind the middle) ; and its 

 surface is more shining, and of an intenser black. Its 

 rostrum is more strictly parallel, being indeed, if any- 

 thing, rather contracted,^ perhaps, than otherwise, towards 

 the base (instead of, as in the Rhyncoli, somewhat thick- 

 ened) ; its eyes are larger and more prominent ; its pro- 

 thorax and metasternum are more elongated; its club 

 (although small) is both less narrowed and less acuminate ; 

 and its four anterior coxae are a little more remote. 



97. HETERARTHUS (Wollaston, Trans. Ent. Soc. 

 Lond. 29. 1873). It was for two very closely related 

 species which were captured by Mr. Gr. Lewis in Japan 

 that I lately established the genus Heterarthrus ; and a 

 third is now before me, from the collections of Mr. Pascoe 

 and Mr. Janson, from the same region, it having been 

 taken near Nagasaki, in the island of Kushiu. They 

 may be known from the members of the neighbouring 

 groups by their convex and fusiform bodies having the 



