Dorytomus.'] BHYNCHOPHORA. 273 



very distinct and consist in differences in the length of the rostrum 

 and anterior legs, the shape of the scrobes, &c. ; the species, as a rule, are 

 pitchy and fuscous, with the elytra more or less mottled with ferruginous 

 scales or pilose pubescence ; in many cases they very closely resemble 

 one another and require great care in their determination ; in fact it 

 will be found in many cases extremely hard to distinguish them without 

 a careful comparison of authentic types. 



I have followed M. Bedel in regarding D. costirostris and D. Silber- 

 manni as synonymous with D. maculatus, of which species they are 

 evidently at most varieties. 



I. Rostrum long and thin, at least as long as half 

 the body ; anterior legs of male slender, as long as 



the whole body D. TORAX, F. 



(longimanus, Forst). 



II Rostrum shorter and stouter, not as long as half 

 the body ; anterior legs of male only slightly elon- 

 gate. 



i. Prosternum bordered with a fringe of yellowish 

 hairs in front. 



1. Elvtra with depressed pubescence and also 

 with small raised setae which are plainly 



risible at sides D. HIRTIPENXTS, Bedel. 



(t&niatus, Brit. Cat.) 



2. Elvtra with depressed pubescence and without 



raised setae. 



A. Rostrum channelled or with longitudinal 

 punctured strize, longer than the head and 



thorax united. 



a. Elytra with well marked variegated 

 scale-like pubescence (which more or 

 less covers the upper surface), scarcely 

 broader at shoulders than base of thorax ; 

 anterior tibise distinctly ansrled in the 

 middle of their inner mat gin in the 



ronle D. TBEMUL*;, F. 



b. Elytra almost glabrous, plainly broader 

 at shoulders than base of tlioi ax ; anterior 

 tibiae almost straight on their inner mar- 

 gin in both sexes D. TOETEIX, L. 



B. Rostrum even, thickly punctured, and 

 pubescent, and scarcely as long as head and 



thorax united D. VALioiROSi'Ris, Gtjll. 



ii. Prostirnum without a trace of a fringe of 

 hairs extending beyond its anterior border. 

 1. Anterior margin of pro^ternum not emar- 

 ginate in the middle; elytra with a very 

 slight prominence, usually covered with 

 whitish hairs, at the apex of the fifth inter- 

 stice. 

 A. Rostrum almost glabrous, longer and 



thinner ; form narrower D. MACUIATTTS, Marsh. 



(teeniatus, F. nee Brit. Cat.) 

 ' V. cn.<tirr,itri?, Schonh. 

 V. Sdbermanni. Went-k 



VOL. V. T 



