﻿84 THE ENTOMOLOGIST. 



DESCRIPTIONS OF NEW SPECIES OF PHYTOPHAGOUS 

 COLEOPTERA RECEIVED BY MR. J. H. LEECH, FROM 

 CHANG- YANG, CHINA. 



By Martin Jacobt, F.E.S. 



Donacia longicornis, n. sp. (Plate I. fig. 2). 



Subdepressed, obscure greenish or brownish cupreous ; antennae as long 

 as the body (£) ; thorax constricted at the base, the sides tuberculate 

 anteriorly, the surface transversely strigose ; elytra punctate-striate, the 

 interstices transversely wrinkled, the apex truncate. 



$ . The posterior femora extending much beyond the elytra, with a stout 

 tooth, then tibiae curved, finely dentate at the inner margin, triangularly 

 toothed below the middle. $ . Antennae shorter ; femora not produced 

 beyond the elytra, obsoletely toothed, their tibiae simple, unarmed. Length, 

 4| — 5 lines. 



$ . Head minutely rugose, with a deep central groove between the 

 antennae ; eyes rather small ; palpi and mandibles piceous ; antennae as long 

 or longer than the body, black, very finely pubescent, the third joint 

 distinctly longer than the fourth and the longest ; thorax slightly longer than 

 broad, the anterior portion much widened and swollen in shape of rounded 

 tubercles at the sides, the anterior angles also distinctly tuberculiforrn, the 

 surface flattened with a central longitudinal groove, entirely and closely 

 transversely strigose without punctuation ; scutellum clothed with fine 

 greenish pubescence ; elytra flattened, their apex truncate, the surface trans- 

 versely rugose or wrinkled, the punctured striae placed at regular intervals, 

 the punctures rounded at the base, more elongate towards the middle, and 

 distinct to the apex ; the underside metallic, clothed with very short yellowish 

 pubescence. 



A few specimens. 



This Donacia will not be very difficult to recognize on account 

 of the long and slender antennae, the long posterior femora and 

 dentate tibise of the male insect ; the female differs considerably 

 in this, but in no other respect ; the strongly swollen anterior 

 portion of the thorax will further assist in the recognition of the 

 species. 



Chalcolema, n. gen. (Criocerid^ ?) 

 Body elongate ; eyes small, entire ; antennae widely separated, filiform, 

 the first and second joints short, the others elongate ; thorax subquadrate, 

 the lateral margin distinct, the disc flattened, foveolate ; scutellum not longer 

 than broad, its apex broadly truncate ; elytra irregularly punctured, sparingly 

 pubescent, their epipleurae narrow ; legs moderate, the femora thickened, the 

 posterior ones more strongly incrassate ; the first joint of the posterior tarsi 

 as long as the two foUowing ones together ; claws appendiculate ; prosternum 

 broad, slightly longer than broad ; mesosternum constricted at the middle ; 

 the first abdominal segment double the length of the second one. 



The species, for the reception of which I propose the present 

 genus, and of which only a single specimen was received, seems 

 to form a most interesting link between the Sagridce and Crio- 

 ceridce on one hand, and the Megascelidce on the other. I cannot 

 at present, however, give an opinion on its true systematic posi- 

 tion, since the insect seems to unite characters to be found singly 



