COLEOPTERA 393 



The antennae are clear, pale red. They are formed much as in D. bonvouloiri 

 but are broader : the fourth joint is slightly longer proportionally to its width, and the 

 fifth is much longer than the fourth. The legs are red, stout. 



This species in appearance connects the D. bonvouloiri group with the D. obtitstis 

 group. The shortest of the five individuals a good deal resembles small D. elateroides, 

 but I think the two are distinct. 



Hab. Maui. Haleakala, 5000 ft. May, 1896 (nos. 605, 610, Perkins). 



Group 3. 



(17) Dromacohts collaris, sp. nov. 



Brevis, robustus, nigricans, thorace pedibusque nigricantibus, rufo plus minusve 

 dilutis. thorace tortiter punctato : elytris profunde striatis, interstitiis subtilissime punctatis 

 et pubescentibus. Long. 7 mm. 



In appearance most like D. »ioiokaieiisis, but apparently not closely allied to it 

 or to any other species ; we have however only one specimen, and I am unable to 

 make repeated examinations of its minute structural characters, as it is in rather bad 

 preservation. The antennae are elongate, rather slender, blackish, fourth and fifth 

 joints subequal, each longer than broad. Terminal joint elongate, tarsi slender. Ehtra 

 deeply striate, with very little punctuation or pubescence on the slightly convex inter- 

 stices ; hence the pubescence is divided into separate stripes in a more remarkable 

 manner than in any other species. 



Hab. Maui. Haleakala, 5000 ft, i April, 1894 (no. 354, Perkins), 



(18) Droiiiaco/iis obiitsus, Blackburn. 



Eornax obfnsiis Blackburn, Tr. Dublin Soc. iii. 1S85, p. 152. 



The individuals of this species are the largest of this section of the genus, and 

 remarkable on account of their broad, robust form. The thorax is not gradually narrowed 

 trom the base to the front, the marked convergence only occurring from the middle. 

 The punctuation is coarse ; the pubescence short and inconspicuous ; the length varies 

 from 8 — 10^ mm. or perhaps a little more. 



Mr Perkins has met with seven specimens, but most of them were found dead and 

 are in very bad preservation. Mr Blackburn found two specimens, one of them being 

 also very mutilated. His description leads one, I think, to anticipate a finer punctuation 

 than really exists. 



Hab. Maui. Haleakala, 5000 ft. (Blackburn and Perkins). Perkins' specimens 

 are dated 31 March, 1894, and May, 1896. 



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