of several new Species of Helceidce. 53 



species of Hclcsus liitherto described, was sent to uie by Captain 

 Roe of Swan River ; it was taken at Norfolk Sound. 



Sp. 2. Helceus contractus, Hope. (PI. VI. fig. 2.) 



Ater, ovatus, postice vix dilatatus, antennis piceis ; thorace 

 marginibus elevatis, linedque medid longitudinali elevata. 

 Elytra sub lente tribus lineis parum distinctis notata, spar- 

 simque punctulata. Corpus infra atro-piceum, abdomine 

 colore piceo inquinato, pedibusque concoloribus. 



Long, lin, 9|, lat. lin. 3|. 



In Mus. D. Hope. 



The above insect inhabits the vicinity of the Swan River, and, 

 as by some individuals it vnay be considered at a future period as 

 forming a subgenus, I give the following anatomical sections : — 



Fig. 2a, mandible; 2 6, maxilla; 2c, mentum, labium, and labial palpi; 



2 rf, antenna ; 2 e, extremity of tibia and base of tarsus of the fore leg. 



Sp. 3. Helceus Spinola;, Hope. (PI. VI. fig. 3.) 



Niger, thorace marginibusque elytrorum atro-brunneis, pedi- 

 busque piceis. Ovatus, capite depresso, subrugoso ; angulis 

 thoracis hand complicatis, elytris in medio longis, pilis crispis 

 et atris obsitis. Corpus infra piceum, pedibus concoloribus. 



Long. lin. 9|, lat. lin. ()|. 



In Mus. D. Hope. 



Habitat circa Fluvium Cygneum. 



The above insect is closely allied to Helceus perforatus of Kirby, 

 but differs considerably in form,* it appears to be mediate between 

 H. perforatus and Sjyencii, differing from both of them. It is named 

 in honour of the Marquis of Spinola, a veteran in Entomology, 

 and lately the author of a splendid Monograph on the Cleridce. 



Fig. 3a, mandible; 3 6, maxilla; 3c, mentum, labium, and labial palpi; 



3 d, antenna. 



Sp. 4. Helceus testudineus, Hope. (PI. VI. fig. 4.) 

 Lato-ovalis, caenicolor, squalidus, capite depresso, angulis 



* [It is of a much more regularly oval form, with each extremity somewhat 

 acute; the anterior angles of the prothorax are subtruncate in front of the eyes 

 and do not overlap each other, leaving an open space of nearly the breadth of the 

 head. The disc of the prothorax has two impressed spots, and wants the central 

 posterior tubercle which exists in H. perforaius. — J, O, ]V.~\ 



