28 ENTOMOLOGICAL NEWS. [Jan., '17 



times crawling slowly over the plants, but usually in the curled 

 up, basal part of the leaf or in the sheath surrounding the flower 

 stalk. Advantage is taken of this habit by the orchid-grower 

 who sometimes sends a man daily through the house to hunt out 

 raid destroy them. Up to the present I have been unsuccess- 

 ful in my search for larvae and pupae and know nothing con- 

 cerning the early stages. Mr. G. C. Champion writes that the 

 eight known species of Diorymclhis are all from Central 

 America and that this new species is related to D. octostriatus 

 and D. 12-striatus. 



Cholus cattleyae Champ. (Col.). (Plate V, fig. 2.) 



This attractive species, which belongs to the Curculionidae, 

 is about ii mm. long, 5 mm. wide, black and characteristically 

 marked with white and has been found as a rule associated 

 only with Cattleya gigas, but other species are sometimes in- 

 jured. Its feeding habits are somewhat similar to those of 

 Eucactophagns graphlpterus except that the damage is done 

 higher up. The surface of the pseudo-bulb is irregularly 

 chewed and the leaves punctured with large holes, the tissue 

 surrounding these punctures finally turning black and becom- 

 ing hard and dead. From information received from orchid- 

 growers and my own observations, I am inclined to believe 

 that the larval and pupal stages are passed within the pseudo- 

 bulbs, as coleopterous larvae have been taken from these bulbs 

 and they often contain large cavities and exit holes. Mr. 

 Champion states that this species is allied to C. forbesi Pasc., 

 from Ecuador, found among orchids and that two allied forms 

 occur in Central America, these being C. nigromaculatus and 

 C. nitjronotatns. Caltleya gigas comes from Colombia which 

 is undoubtedly the home of this species.* 



Diaxenes dendrobii Gahan (Col.). 



This species, known as the Dendrobium orchid beetle, at- 



*Since the above was written, Mr. H. S. Barber has examined my 

 specimens and finds that two species are confused. One is Cholus 

 cattleyae and the other has been identified tentatively by him as Cholus 

 forbesii Pascoe. In view of this, the notes under Cholus cattleyae 

 apply equally well to ? Cl>.t>hts forbesii as both were found together. 



