new British Homojjterous Genera. 51 



Long. Corp. 2-j- lin., lat. corp. 1 lin. 



Cicada flavicollis. Linn., ^tjst. Nat. 709. Faun. Suec. 891. 

 Schccjr. Icon. 



A very variable species, sometimes ferruginous, with the head, 

 thorax, and scutellum greenish yellow ; sometimes entirely ferru- 

 ginous ; the superior wings generally with large diaphanous spots. 



Common near London, at Birch and Coombe Woods. July. 



There are many other varieties, but it seems unnecessary for me 

 now to describe them. Fabricius's Cicada flavicollis seems distinct, 

 as are probably some of Schseffer's varieties. The unicolorous 

 varieties resemble some species of the first division ; the sectional 

 character must therefore be attended to. I have deposited a nearly 

 typical specimen in the IVIuseum of this Society. 



Batracomorphus*. Fig. 5. 



Corpus depressum. Caput thorace vix angustius ; vertex lunatus. 

 Fades transversa, suhovata. Oculi minimi. Ocelli 2 in faciei 

 margine siiperiori dispositi. Antenna in excavatione inter oculo- 

 rum marginem inferiorem inserted ; articulus primiis brevissimns, 

 secundus cylindricus, ultiinus setiformis. Prothorax transversus, 

 subovatus, postice excisus. Scutellum magnum, subtrigonum. Alee 

 superiores longitudine abdominis. Oviductus falcatus (fig. 5, b). 

 Tibiae intermedia interni et externe paucis spinidis ; posticce extcrne 

 bifariam spinosee, interne spinulosce et ciliata. 

 Body depressed. Head nearly as wide as the thorax, the anterior 

 margin very convex, the posterior slightly concave, forming a 

 lunate or crescent- shaped vertex. Eyes small. Ocelli 2, 

 placed near the superior margin of the face. (Fig. 5 a.) Face 

 transverse, subovate. Antenna inserted in large excavations 

 in the face between the inferior margin of the eyes, short, tri- 

 articulate; the first and second joints very short, cylindrical, 

 the last a short stout seta. Rostrum rather shorter than the 

 prothorax. Prothorax transverse, ovate, posteriorly gently 

 excised. Scutellum large, broad, trigonate. Superior wings 

 slightly deflexed ; the apex of the suture with small over- 

 lapping projections. Inferior wings ample. Ovipositor much 

 curved upwards. Anterior tibia internally densely ciliated. 

 Intermediate tibia both externally and internally with a few 

 small spines. Posterior tibia curved, compressed ; externally 

 with two rows of strong spines ; internally with a row of 

 spinulae directed downwards, and a series of cilise directed 

 inwards. Tarsi triarticulate ; the anterior and intermediate 



* ^ixT^x^/>; rayia, fio^ifn forma. 

 E 2 



